/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/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:59:05,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:59:05,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:59:05,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:59:05,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:59:05,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:59:05,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:59:05,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:59:05,858 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:59:05,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:59:05,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:59:05,861 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:59:05,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:59:05,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:59:05,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:59:05,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:59:05,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:59:05,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:59:05,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:59:05,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:59:05,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:59:05,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:59:05,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:59:05,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:59:05,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:59:05,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:59:05,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:59:05,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:59:06,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:59:06,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:59:06,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:59:06,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:59:06,073 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:59:06,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-11-17 15:59:07,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:59:07,400 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:59:07,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-11-17 15:59:07,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c448b5d61/ff1892f33c2e4c1a930d3a32ed83d85f/FLAG4ea54a1c8 [2023-11-17 15:59:07,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c448b5d61/ff1892f33c2e4c1a930d3a32ed83d85f [2023-11-17 15:59:07,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:59:07,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:59:07,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:59:07,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:59:07,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:59:07,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f8026b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07, skipping insertion in model container [2023-11-17 15:59:07,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,446 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:59:07,598 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/mult-dist.wvr.c[2155,2168] [2023-11-17 15:59:07,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:59:07,612 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:59:07,642 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/mult-dist.wvr.c[2155,2168] [2023-11-17 15:59:07,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:59:07,656 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:59:07,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07 WrapperNode [2023-11-17 15:59:07,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:59:07,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:59:07,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:59:07,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:59:07,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,681 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-11-17 15:59:07,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:59:07,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:59:07,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:59:07,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:59:07,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:59:07,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:59:07,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:59:07,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:59:07,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:59:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:07,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:59:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:59:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:59:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:59:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:59:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:59:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:59:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:59:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:59:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:59:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:59:07,777 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:59:07,848 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:59:07,849 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:59:08,053 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:59:08,061 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:59:08,061 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 15:59:08,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:59:08 BoogieIcfgContainer [2023-11-17 15:59:08,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:59:08,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:59:08,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:59:08,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:59:08,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:59:07" (1/3) ... [2023-11-17 15:59:08,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6fbbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:59:08, skipping insertion in model container [2023-11-17 15:59:08,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07" (2/3) ... [2023-11-17 15:59:08,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6fbbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:59:08, skipping insertion in model container [2023-11-17 15:59:08,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:59:08" (3/3) ... [2023-11-17 15:59:08,068 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-11-17 15:59:08,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:59:08,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:59:08,080 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:59:08,180 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:59:08,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow [2023-11-17 15:59:08,275 INFO L124 PetriNetUnfolderBase]: 7/109 cut-off events. [2023-11-17 15:59:08,275 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:59:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-17 15:59:08,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 245 flow [2023-11-17 15:59:08,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 98 transitions, 214 flow [2023-11-17 15:59:08,289 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:59:08,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 98 transitions, 214 flow [2023-11-17 15:59:08,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 98 transitions, 214 flow [2023-11-17 15:59:08,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 98 transitions, 214 flow [2023-11-17 15:59:08,363 INFO L124 PetriNetUnfolderBase]: 7/98 cut-off events. [2023-11-17 15:59:08,364 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:59:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 7/98 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-17 15:59:08,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-17 15:59:10,554 INFO L134 LiptonReduction]: Checked pairs total: 1624 [2023-11-17 15:59:10,554 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-11-17 15:59:10,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:59:10,569 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;@67ac6a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:59:10,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:59:10,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:59:10,580 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 15:59:10,580 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:59:10,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:10,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:10,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:10,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1867336189, now seen corresponding path program 1 times [2023-11-17 15:59:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041597979] [2023-11-17 15:59:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:11,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041597979] [2023-11-17 15:59:11,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041597979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:11,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:11,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:59:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014052153] [2023-11-17 15:59:11,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:11,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:59:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:59:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:59:11,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 196 [2023-11-17 15:59:11,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:11,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 196 [2023-11-17 15:59:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:11,246 INFO L124 PetriNetUnfolderBase]: 428/630 cut-off events. [2023-11-17 15:59:11,246 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-17 15:59:11,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 630 events. 428/630 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 138 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 1030. Up to 389 conditions per place. [2023-11-17 15:59:11,251 INFO L140 encePairwiseOnDemand]: 191/196 looper letters, 36 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-11-17 15:59:11,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 197 flow [2023-11-17 15:59:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:59:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:59:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-11-17 15:59:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2023-11-17 15:59:11,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-11-17 15:59:11,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-11-17 15:59:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:11,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-11-17 15:59:11,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,277 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 324 transitions. [2023-11-17 15:59:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 197 flow [2023-11-17 15:59:11,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:11,284 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-11-17 15:59:11,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-11-17 15:59:11,287 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-11-17 15:59:11,287 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-11-17 15:59:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:11,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:59:11,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:11,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash -861812848, now seen corresponding path program 1 times [2023-11-17 15:59:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:11,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870621743] [2023-11-17 15:59:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870621743] [2023-11-17 15:59:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870621743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:11,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:11,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418995387] [2023-11-17 15:59:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:11,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:11,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:11,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:11,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:11,838 INFO L124 PetriNetUnfolderBase]: 586/836 cut-off events. [2023-11-17 15:59:11,838 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-17 15:59:11,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 836 events. 586/836 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2736 event pairs, 231 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 597. Up to 620 conditions per place. [2023-11-17 15:59:11,845 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 49 selfloop transitions, 18 changer transitions 3/70 dead transitions. [2023-11-17 15:59:11,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 70 transitions, 353 flow [2023-11-17 15:59:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-11-17 15:59:11,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44752186588921283 [2023-11-17 15:59:11,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-11-17 15:59:11,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-11-17 15:59:11,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:11,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-11-17 15:59:11,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,857 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 614 transitions. [2023-11-17 15:59:11,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 70 transitions, 353 flow [2023-11-17 15:59:11,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 70 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:11,860 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 200 flow [2023-11-17 15:59:11,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=35, PETRI_TRANSITIONS=41} [2023-11-17 15:59:11,861 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-11-17 15:59:11,861 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 200 flow [2023-11-17 15:59:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:11,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:59:11,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:11,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -816449826, now seen corresponding path program 2 times [2023-11-17 15:59:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:11,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401576739] [2023-11-17 15:59:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401576739] [2023-11-17 15:59:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401576739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082865812] [2023-11-17 15:59:12,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:12,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:12,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:12,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:12,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:59:12,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:12,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:12,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:59:12,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082865812] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-11-17 15:59:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545627067] [2023-11-17 15:59:12,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:59:12,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:12,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:12,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:12,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:12,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:13,220 INFO L124 PetriNetUnfolderBase]: 953/1379 cut-off events. [2023-11-17 15:59:13,221 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2023-11-17 15:59:13,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 1379 events. 953/1379 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5141 event pairs, 257 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 2476. Up to 504 conditions per place. [2023-11-17 15:59:13,241 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 102 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2023-11-17 15:59:13,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 123 transitions, 746 flow [2023-11-17 15:59:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:59:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:59:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 767 transitions. [2023-11-17 15:59:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48915816326530615 [2023-11-17 15:59:13,243 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 767 transitions. [2023-11-17 15:59:13,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 767 transitions. [2023-11-17 15:59:13,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:13,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 767 transitions. [2023-11-17 15:59:13,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,248 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 200 flow. Second operand 8 states and 767 transitions. [2023-11-17 15:59:13,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 123 transitions, 746 flow [2023-11-17 15:59:13,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 123 transitions, 724 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:13,256 INFO L231 Difference]: Finished difference. Result has 46 places, 55 transitions, 333 flow [2023-11-17 15:59:13,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=46, PETRI_TRANSITIONS=55} [2023-11-17 15:59:13,257 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-17 15:59:13,257 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 55 transitions, 333 flow [2023-11-17 15:59:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:13,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:13,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:59:13,480 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 15:59:13,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:13,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1493911886, now seen corresponding path program 1 times [2023-11-17 15:59:13,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:13,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427688543] [2023-11-17 15:59:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:13,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427688543] [2023-11-17 15:59:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427688543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995261463] [2023-11-17 15:59:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:13,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:13,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:59:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:13,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:59:13,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995261463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:14,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:14,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:59:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599984932] [2023-11-17 15:59:14,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:14,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:59:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:59:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:59:14,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:14,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 55 transitions, 333 flow. Second operand has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:14,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:14,590 INFO L124 PetriNetUnfolderBase]: 1092/1604 cut-off events. [2023-11-17 15:59:14,590 INFO L125 PetriNetUnfolderBase]: For 4166/4166 co-relation queries the response was YES. [2023-11-17 15:59:14,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 1604 events. 1092/1604 cut-off events. For 4166/4166 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6505 event pairs, 210 based on Foata normal form. 18/1622 useless extension candidates. Maximal degree in co-relation 4123. Up to 522 conditions per place. [2023-11-17 15:59:14,600 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 113 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2023-11-17 15:59:14,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 151 transitions, 1100 flow [2023-11-17 15:59:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:59:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:59:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 906 transitions. [2023-11-17 15:59:14,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46224489795918366 [2023-11-17 15:59:14,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 906 transitions. [2023-11-17 15:59:14,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 906 transitions. [2023-11-17 15:59:14,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:14,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 906 transitions. [2023-11-17 15:59:14,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,609 INFO L175 Difference]: Start difference. First operand has 46 places, 55 transitions, 333 flow. Second operand 10 states and 906 transitions. [2023-11-17 15:59:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 151 transitions, 1100 flow [2023-11-17 15:59:14,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 151 transitions, 1080 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:14,623 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 592 flow [2023-11-17 15:59:14,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=592, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-11-17 15:59:14,624 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-17 15:59:14,624 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 592 flow [2023-11-17 15:59:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:14,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:14,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:14,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:14,830 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 15:59:14,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:14,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1916724734, now seen corresponding path program 2 times [2023-11-17 15:59:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:14,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170962549] [2023-11-17 15:59:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:14,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170962549] [2023-11-17 15:59:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170962549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840509079] [2023-11-17 15:59:14,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:14,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:14,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:14,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:15,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:59:15,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:15,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:15,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 15:59:15,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840509079] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:15,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 16 [2023-11-17 15:59:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273823296] [2023-11-17 15:59:15,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:15,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:15,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:15,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:15,737 INFO L124 PetriNetUnfolderBase]: 1500/2210 cut-off events. [2023-11-17 15:59:15,737 INFO L125 PetriNetUnfolderBase]: For 10848/10848 co-relation queries the response was YES. [2023-11-17 15:59:15,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 2210 events. 1500/2210 cut-off events. For 10848/10848 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9434 event pairs, 328 based on Foata normal form. 4/2214 useless extension candidates. Maximal degree in co-relation 6677. Up to 742 conditions per place. [2023-11-17 15:59:15,754 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 128 selfloop transitions, 33 changer transitions 0/161 dead transitions. [2023-11-17 15:59:15,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 161 transitions, 1462 flow [2023-11-17 15:59:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:59:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:59:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 767 transitions. [2023-11-17 15:59:15,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48915816326530615 [2023-11-17 15:59:15,757 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 767 transitions. [2023-11-17 15:59:15,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 767 transitions. [2023-11-17 15:59:15,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:15,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 767 transitions. [2023-11-17 15:59:15,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,761 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,761 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 592 flow. Second operand 8 states and 767 transitions. [2023-11-17 15:59:15,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 161 transitions, 1462 flow [2023-11-17 15:59:15,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 161 transitions, 1428 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:15,784 INFO L231 Difference]: Finished difference. Result has 75 places, 91 transitions, 875 flow [2023-11-17 15:59:15,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=875, PETRI_PLACES=75, PETRI_TRANSITIONS=91} [2023-11-17 15:59:15,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-11-17 15:59:15,786 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 91 transitions, 875 flow [2023-11-17 15:59:15,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:15,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:15,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:15,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:15,992 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 15:59:15,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:15,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1904601854, now seen corresponding path program 1 times [2023-11-17 15:59:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000070594] [2023-11-17 15:59:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:16,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000070594] [2023-11-17 15:59:16,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000070594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:16,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:16,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473051963] [2023-11-17 15:59:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:16,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:16,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 91 transitions, 875 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:16,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:16,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:16,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:16,499 INFO L124 PetriNetUnfolderBase]: 1577/2350 cut-off events. [2023-11-17 15:59:16,500 INFO L125 PetriNetUnfolderBase]: For 20248/20248 co-relation queries the response was YES. [2023-11-17 15:59:16,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12760 conditions, 2350 events. 1577/2350 cut-off events. For 20248/20248 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10258 event pairs, 595 based on Foata normal form. 18/2368 useless extension candidates. Maximal degree in co-relation 8680. Up to 1812 conditions per place. [2023-11-17 15:59:16,566 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 110 selfloop transitions, 33 changer transitions 9/152 dead transitions. [2023-11-17 15:59:16,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 152 transitions, 1622 flow [2023-11-17 15:59:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2023-11-17 15:59:16,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45699708454810495 [2023-11-17 15:59:16,568 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2023-11-17 15:59:16,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2023-11-17 15:59:16,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:16,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2023-11-17 15:59:16,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:16,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:16,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:16,571 INFO L175 Difference]: Start difference. First operand has 75 places, 91 transitions, 875 flow. Second operand 7 states and 627 transitions. [2023-11-17 15:59:16,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 152 transitions, 1622 flow [2023-11-17 15:59:16,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 152 transitions, 1594 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:16,594 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 1136 flow [2023-11-17 15:59:16,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1136, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2023-11-17 15:59:16,595 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-11-17 15:59:16,595 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 1136 flow [2023-11-17 15:59:16,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:16,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:16,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:59:16,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:16,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1078899400, now seen corresponding path program 3 times [2023-11-17 15:59:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202156082] [2023-11-17 15:59:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:16,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202156082] [2023-11-17 15:59:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202156082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416541231] [2023-11-17 15:59:16,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:16,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:16,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:16,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:16,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:59:16,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:59:16,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:16,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:59:16,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:16,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416541231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:17,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-17 15:59:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719819887] [2023-11-17 15:59:17,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:17,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:17,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:17,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 1136 flow. Second operand has 15 states, 15 states have (on average 81.33333333333333) internal successors, (1220), 15 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:17,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:17,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:17,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:18,264 INFO L124 PetriNetUnfolderBase]: 2438/3709 cut-off events. [2023-11-17 15:59:18,265 INFO L125 PetriNetUnfolderBase]: For 35102/35102 co-relation queries the response was YES. [2023-11-17 15:59:18,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21502 conditions, 3709 events. 2438/3709 cut-off events. For 35102/35102 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18854 event pairs, 290 based on Foata normal form. 26/3735 useless extension candidates. Maximal degree in co-relation 15003. Up to 1258 conditions per place. [2023-11-17 15:59:18,304 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 248 selfloop transitions, 125 changer transitions 1/374 dead transitions. [2023-11-17 15:59:18,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 374 transitions, 4007 flow [2023-11-17 15:59:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 15:59:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 15:59:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1963 transitions. [2023-11-17 15:59:18,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552411873840445 [2023-11-17 15:59:18,309 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1963 transitions. [2023-11-17 15:59:18,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1963 transitions. [2023-11-17 15:59:18,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:18,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1963 transitions. [2023-11-17 15:59:18,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 89.22727272727273) internal successors, (1963), 22 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,321 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,321 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 1136 flow. Second operand 22 states and 1963 transitions. [2023-11-17 15:59:18,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 374 transitions, 4007 flow [2023-11-17 15:59:18,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 374 transitions, 3839 flow, removed 84 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:18,393 INFO L231 Difference]: Finished difference. Result has 121 places, 188 transitions, 2540 flow [2023-11-17 15:59:18,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2540, PETRI_PLACES=121, PETRI_TRANSITIONS=188} [2023-11-17 15:59:18,394 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2023-11-17 15:59:18,394 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 188 transitions, 2540 flow [2023-11-17 15:59:18,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 81.33333333333333) internal successors, (1220), 15 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:18,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:18,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:18,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:18,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:18,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 800945372, now seen corresponding path program 4 times [2023-11-17 15:59:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352202862] [2023-11-17 15:59:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:18,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352202862] [2023-11-17 15:59:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352202862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410040288] [2023-11-17 15:59:18,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:18,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:18,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:18,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:59:18,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:18,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:18,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:59:18,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:18,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410040288] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:19,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:19,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 15 [2023-11-17 15:59:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943287094] [2023-11-17 15:59:19,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:19,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:19,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:19,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 188 transitions, 2540 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:19,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:19,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:19,729 INFO L124 PetriNetUnfolderBase]: 2811/4239 cut-off events. [2023-11-17 15:59:19,729 INFO L125 PetriNetUnfolderBase]: For 56952/56952 co-relation queries the response was YES. [2023-11-17 15:59:19,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28824 conditions, 4239 events. 2811/4239 cut-off events. For 56952/56952 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21424 event pairs, 498 based on Foata normal form. 6/4245 useless extension candidates. Maximal degree in co-relation 28383. Up to 1478 conditions per place. [2023-11-17 15:59:19,763 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 220 selfloop transitions, 74 changer transitions 0/294 dead transitions. [2023-11-17 15:59:19,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 294 transitions, 4190 flow [2023-11-17 15:59:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:59:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:59:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 769 transitions. [2023-11-17 15:59:19,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043367346938777 [2023-11-17 15:59:19,765 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 769 transitions. [2023-11-17 15:59:19,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 769 transitions. [2023-11-17 15:59:19,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:19,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 769 transitions. [2023-11-17 15:59:19,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.125) internal successors, (769), 8 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:19,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:19,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:19,770 INFO L175 Difference]: Start difference. First operand has 121 places, 188 transitions, 2540 flow. Second operand 8 states and 769 transitions. [2023-11-17 15:59:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 294 transitions, 4190 flow [2023-11-17 15:59:19,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 294 transitions, 3896 flow, removed 147 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:19,884 INFO L231 Difference]: Finished difference. Result has 133 places, 213 transitions, 3030 flow [2023-11-17 15:59:19,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3030, PETRI_PLACES=133, PETRI_TRANSITIONS=213} [2023-11-17 15:59:19,885 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2023-11-17 15:59:19,885 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 213 transitions, 3030 flow [2023-11-17 15:59:19,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:19,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:19,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:19,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:20,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:20,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:20,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash -594615494, now seen corresponding path program 5 times [2023-11-17 15:59:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374316427] [2023-11-17 15:59:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374316427] [2023-11-17 15:59:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374316427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046415012] [2023-11-17 15:59:20,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:20,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:20,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:20,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:59:20,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:20,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:20,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:59:20,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046415012] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-11-17 15:59:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768086486] [2023-11-17 15:59:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:59:20,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:20,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 213 transitions, 3030 flow. Second operand has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:20,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:20,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:20,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:21,546 INFO L124 PetriNetUnfolderBase]: 3680/5559 cut-off events. [2023-11-17 15:59:21,546 INFO L125 PetriNetUnfolderBase]: For 87509/87509 co-relation queries the response was YES. [2023-11-17 15:59:21,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 5559 events. 3680/5559 cut-off events. For 87509/87509 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29737 event pairs, 565 based on Foata normal form. 6/5565 useless extension candidates. Maximal degree in co-relation 37464. Up to 2817 conditions per place. [2023-11-17 15:59:21,590 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 252 selfloop transitions, 170 changer transitions 3/425 dead transitions. [2023-11-17 15:59:21,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 425 transitions, 6748 flow [2023-11-17 15:59:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2023-11-17 15:59:21,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650145772594752 [2023-11-17 15:59:21,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2023-11-17 15:59:21,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2023-11-17 15:59:21,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:21,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2023-11-17 15:59:21,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:21,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:21,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:21,595 INFO L175 Difference]: Start difference. First operand has 133 places, 213 transitions, 3030 flow. Second operand 7 states and 638 transitions. [2023-11-17 15:59:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 425 transitions, 6748 flow [2023-11-17 15:59:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 425 transitions, 6579 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:21,856 INFO L231 Difference]: Finished difference. Result has 143 places, 340 transitions, 5701 flow [2023-11-17 15:59:21,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5701, PETRI_PLACES=143, PETRI_TRANSITIONS=340} [2023-11-17 15:59:21,857 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2023-11-17 15:59:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 340 transitions, 5701 flow [2023-11-17 15:59:21,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:21,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:21,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:21,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:22,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:22,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:22,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 617622188, now seen corresponding path program 6 times [2023-11-17 15:59:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129285733] [2023-11-17 15:59:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129285733] [2023-11-17 15:59:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129285733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909371768] [2023-11-17 15:59:22,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:22,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:22,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:59:22,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:59:22,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:22,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 15:59:22,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:22,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909371768] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 16 [2023-11-17 15:59:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248815480] [2023-11-17 15:59:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:22,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:22,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:22,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 340 transitions, 5701 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:22,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:22,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:23,525 INFO L124 PetriNetUnfolderBase]: 3742/5653 cut-off events. [2023-11-17 15:59:23,525 INFO L125 PetriNetUnfolderBase]: For 105232/105232 co-relation queries the response was YES. [2023-11-17 15:59:23,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42330 conditions, 5653 events. 3742/5653 cut-off events. For 105232/105232 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30171 event pairs, 919 based on Foata normal form. 22/5675 useless extension candidates. Maximal degree in co-relation 41844. Up to 2976 conditions per place. [2023-11-17 15:59:23,611 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 339 selfloop transitions, 62 changer transitions 0/401 dead transitions. [2023-11-17 15:59:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 401 transitions, 7168 flow [2023-11-17 15:59:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:59:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:59:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-11-17 15:59:23,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483843537414966 [2023-11-17 15:59:23,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-11-17 15:59:23,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-11-17 15:59:23,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:23,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-11-17 15:59:23,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:23,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:23,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:23,616 INFO L175 Difference]: Start difference. First operand has 143 places, 340 transitions, 5701 flow. Second operand 6 states and 569 transitions. [2023-11-17 15:59:23,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 401 transitions, 7168 flow [2023-11-17 15:59:23,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 401 transitions, 6895 flow, removed 111 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:23,955 INFO L231 Difference]: Finished difference. Result has 150 places, 352 transitions, 5883 flow [2023-11-17 15:59:23,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5883, PETRI_PLACES=150, PETRI_TRANSITIONS=352} [2023-11-17 15:59:23,956 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2023-11-17 15:59:23,956 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 352 transitions, 5883 flow [2023-11-17 15:59:23,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:23,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:23,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:23,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:24,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:24,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:24,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1157334122, now seen corresponding path program 3 times [2023-11-17 15:59:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:24,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520360954] [2023-11-17 15:59:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:24,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520360954] [2023-11-17 15:59:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520360954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:24,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820875758] [2023-11-17 15:59:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:24,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:24,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 352 transitions, 5883 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:24,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:24,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:24,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:25,290 INFO L124 PetriNetUnfolderBase]: 3760/5679 cut-off events. [2023-11-17 15:59:25,290 INFO L125 PetriNetUnfolderBase]: For 95083/95083 co-relation queries the response was YES. [2023-11-17 15:59:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41249 conditions, 5679 events. 3760/5679 cut-off events. For 95083/95083 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30424 event pairs, 1021 based on Foata normal form. 4/5683 useless extension candidates. Maximal degree in co-relation 40756. Up to 3545 conditions per place. [2023-11-17 15:59:25,337 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 332 selfloop transitions, 81 changer transitions 5/418 dead transitions. [2023-11-17 15:59:25,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 418 transitions, 7277 flow [2023-11-17 15:59:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2023-11-17 15:59:25,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45699708454810495 [2023-11-17 15:59:25,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2023-11-17 15:59:25,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2023-11-17 15:59:25,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:25,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2023-11-17 15:59:25,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,342 INFO L175 Difference]: Start difference. First operand has 150 places, 352 transitions, 5883 flow. Second operand 7 states and 627 transitions. [2023-11-17 15:59:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 418 transitions, 7277 flow [2023-11-17 15:59:25,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 418 transitions, 7195 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:25,567 INFO L231 Difference]: Finished difference. Result has 157 places, 356 transitions, 6052 flow [2023-11-17 15:59:25,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=5807, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6052, PETRI_PLACES=157, PETRI_TRANSITIONS=356} [2023-11-17 15:59:25,568 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2023-11-17 15:59:25,568 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 356 transitions, 6052 flow [2023-11-17 15:59:25,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:25,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:59:25,568 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:25,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1187756782, now seen corresponding path program 2 times [2023-11-17 15:59:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:25,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976841917] [2023-11-17 15:59:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976841917] [2023-11-17 15:59:25,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976841917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:25,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930874226] [2023-11-17 15:59:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:25,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:25,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:25,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 356 transitions, 6052 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:25,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:25,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:25,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:26,824 INFO L124 PetriNetUnfolderBase]: 3771/5726 cut-off events. [2023-11-17 15:59:26,825 INFO L125 PetriNetUnfolderBase]: For 95719/95719 co-relation queries the response was YES. [2023-11-17 15:59:26,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41780 conditions, 5726 events. 3771/5726 cut-off events. For 95719/95719 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31056 event pairs, 1031 based on Foata normal form. 18/5744 useless extension candidates. Maximal degree in co-relation 41249. Up to 3545 conditions per place. [2023-11-17 15:59:26,872 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 331 selfloop transitions, 77 changer transitions 19/427 dead transitions. [2023-11-17 15:59:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 427 transitions, 7461 flow [2023-11-17 15:59:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2023-11-17 15:59:26,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613702623906705 [2023-11-17 15:59:26,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2023-11-17 15:59:26,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2023-11-17 15:59:26,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:26,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2023-11-17 15:59:26,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:26,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:26,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:26,877 INFO L175 Difference]: Start difference. First operand has 157 places, 356 transitions, 6052 flow. Second operand 7 states and 633 transitions. [2023-11-17 15:59:26,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 427 transitions, 7461 flow [2023-11-17 15:59:27,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 427 transitions, 7298 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:27,215 INFO L231 Difference]: Finished difference. Result has 161 places, 354 transitions, 6025 flow [2023-11-17 15:59:27,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=5889, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6025, PETRI_PLACES=161, PETRI_TRANSITIONS=354} [2023-11-17 15:59:27,216 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2023-11-17 15:59:27,216 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 354 transitions, 6025 flow [2023-11-17 15:59:27,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:27,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:27,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:59:27,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:27,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:27,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1838661862, now seen corresponding path program 7 times [2023-11-17 15:59:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421920844] [2023-11-17 15:59:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:27,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421920844] [2023-11-17 15:59:27,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421920844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:27,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754550606] [2023-11-17 15:59:27,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:27,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:27,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:27,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:59:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:27,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:59:27,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:27,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754550606] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:27,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-11-17 15:59:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970596385] [2023-11-17 15:59:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:27,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:27,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:27,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 354 transitions, 6025 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:27,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:27,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:28,506 INFO L124 PetriNetUnfolderBase]: 3703/5608 cut-off events. [2023-11-17 15:59:28,506 INFO L125 PetriNetUnfolderBase]: For 93626/93626 co-relation queries the response was YES. [2023-11-17 15:59:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41082 conditions, 5608 events. 3703/5608 cut-off events. For 93626/93626 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30054 event pairs, 858 based on Foata normal form. 22/5630 useless extension candidates. Maximal degree in co-relation 40591. Up to 2711 conditions per place. [2023-11-17 15:59:28,561 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 312 selfloop transitions, 97 changer transitions 0/409 dead transitions. [2023-11-17 15:59:28,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 409 transitions, 7322 flow [2023-11-17 15:59:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:59:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:59:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-11-17 15:59:28,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483843537414966 [2023-11-17 15:59:28,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-11-17 15:59:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-11-17 15:59:28,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:28,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-11-17 15:59:28,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:28,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:28,623 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:28,623 INFO L175 Difference]: Start difference. First operand has 161 places, 354 transitions, 6025 flow. Second operand 6 states and 569 transitions. [2023-11-17 15:59:28,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 409 transitions, 7322 flow [2023-11-17 15:59:28,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 409 transitions, 7156 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:28,862 INFO L231 Difference]: Finished difference. Result has 160 places, 358 transitions, 6206 flow [2023-11-17 15:59:28,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6206, PETRI_PLACES=160, PETRI_TRANSITIONS=358} [2023-11-17 15:59:28,863 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2023-11-17 15:59:28,863 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 358 transitions, 6206 flow [2023-11-17 15:59:28,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:28,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:28,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:28,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 15:59:29,067 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,SelfDestructingSolverStorable12 [2023-11-17 15:59:29,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:29,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1560104614, now seen corresponding path program 8 times [2023-11-17 15:59:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:29,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152176617] [2023-11-17 15:59:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:29,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:29,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152176617] [2023-11-17 15:59:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152176617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:29,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266645029] [2023-11-17 15:59:29,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:29,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:29,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:29,196 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:29,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:59:29,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:29,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:29,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 15:59:29,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:29,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266645029] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 16 [2023-11-17 15:59:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570922266] [2023-11-17 15:59:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:29,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:29,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 358 transitions, 6206 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:29,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:29,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:29,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:30,576 INFO L124 PetriNetUnfolderBase]: 3722/5643 cut-off events. [2023-11-17 15:59:30,577 INFO L125 PetriNetUnfolderBase]: For 96808/96808 co-relation queries the response was YES. [2023-11-17 15:59:30,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42016 conditions, 5643 events. 3722/5643 cut-off events. For 96808/96808 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 30390 event pairs, 930 based on Foata normal form. 16/5659 useless extension candidates. Maximal degree in co-relation 41511. Up to 2993 conditions per place. [2023-11-17 15:59:30,622 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 344 selfloop transitions, 63 changer transitions 0/407 dead transitions. [2023-11-17 15:59:30,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 407 transitions, 7463 flow [2023-11-17 15:59:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:59:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:59:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2023-11-17 15:59:30,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2023-11-17 15:59:30,623 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2023-11-17 15:59:30,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2023-11-17 15:59:30,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:30,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2023-11-17 15:59:30,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:30,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:30,626 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:30,627 INFO L175 Difference]: Start difference. First operand has 160 places, 358 transitions, 6206 flow. Second operand 6 states and 567 transitions. [2023-11-17 15:59:30,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 407 transitions, 7463 flow [2023-11-17 15:59:30,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 407 transitions, 7296 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:30,918 INFO L231 Difference]: Finished difference. Result has 163 places, 361 transitions, 6237 flow [2023-11-17 15:59:30,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6039, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6237, PETRI_PLACES=163, PETRI_TRANSITIONS=361} [2023-11-17 15:59:30,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2023-11-17 15:59:30,919 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 361 transitions, 6237 flow [2023-11-17 15:59:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:30,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:30,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:30,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 15:59:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 15:59:31,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:31,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1617363634, now seen corresponding path program 4 times [2023-11-17 15:59:31,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:31,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438589334] [2023-11-17 15:59:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:31,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438589334] [2023-11-17 15:59:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438589334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:31,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:31,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019410931] [2023-11-17 15:59:31,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:31,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:31,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:31,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 361 transitions, 6237 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:31,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:31,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:31,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:32,297 INFO L124 PetriNetUnfolderBase]: 3721/5646 cut-off events. [2023-11-17 15:59:32,297 INFO L125 PetriNetUnfolderBase]: For 98341/98341 co-relation queries the response was YES. [2023-11-17 15:59:32,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41742 conditions, 5646 events. 3721/5646 cut-off events. For 98341/98341 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 30506 event pairs, 962 based on Foata normal form. 4/5650 useless extension candidates. Maximal degree in co-relation 41237. Up to 3546 conditions per place. [2023-11-17 15:59:32,343 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 329 selfloop transitions, 94 changer transitions 4/427 dead transitions. [2023-11-17 15:59:32,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 427 transitions, 7646 flow [2023-11-17 15:59:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2023-11-17 15:59:32,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555393586005831 [2023-11-17 15:59:32,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2023-11-17 15:59:32,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2023-11-17 15:59:32,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:32,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2023-11-17 15:59:32,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,347 INFO L175 Difference]: Start difference. First operand has 163 places, 361 transitions, 6237 flow. Second operand 7 states and 625 transitions. [2023-11-17 15:59:32,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 427 transitions, 7646 flow [2023-11-17 15:59:32,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 427 transitions, 7522 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:32,587 INFO L231 Difference]: Finished difference. Result has 170 places, 367 transitions, 6473 flow [2023-11-17 15:59:32,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6473, PETRI_PLACES=170, PETRI_TRANSITIONS=367} [2023-11-17 15:59:32,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2023-11-17 15:59:32,589 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 367 transitions, 6473 flow [2023-11-17 15:59:32,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:32,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:32,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:32,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:59:32,589 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:32,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1238458342, now seen corresponding path program 9 times [2023-11-17 15:59:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596545428] [2023-11-17 15:59:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596545428] [2023-11-17 15:59:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596545428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701585000] [2023-11-17 15:59:32,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:32,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:32,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:59:32,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:59:32,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:32,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:59:32,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701585000] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:33,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2023-11-17 15:59:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809272794] [2023-11-17 15:59:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:59:33,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2023-11-17 15:59:33,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 367 transitions, 6473 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:33,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:33,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2023-11-17 15:59:33,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:34,072 INFO L124 PetriNetUnfolderBase]: 3697/5580 cut-off events. [2023-11-17 15:59:34,073 INFO L125 PetriNetUnfolderBase]: For 98445/98445 co-relation queries the response was YES. [2023-11-17 15:59:34,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41970 conditions, 5580 events. 3697/5580 cut-off events. For 98445/98445 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 29807 event pairs, 816 based on Foata normal form. 16/5596 useless extension candidates. Maximal degree in co-relation 41681. Up to 2658 conditions per place. [2023-11-17 15:59:34,120 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 317 selfloop transitions, 100 changer transitions 0/417 dead transitions. [2023-11-17 15:59:34,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 417 transitions, 7720 flow [2023-11-17 15:59:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:59:34,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:59:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2023-11-17 15:59:34,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2023-11-17 15:59:34,122 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2023-11-17 15:59:34,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2023-11-17 15:59:34,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:34,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2023-11-17 15:59:34,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:34,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 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 15:59:34,124 INFO L175 Difference]: Start difference. First operand has 170 places, 367 transitions, 6473 flow. Second operand 6 states and 567 transitions. [2023-11-17 15:59:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 417 transitions, 7720 flow [2023-11-17 15:59:34,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 417 transitions, 7569 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:34,488 INFO L231 Difference]: Finished difference. Result has 172 places, 367 transitions, 6529 flow [2023-11-17 15:59:34,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6529, PETRI_PLACES=172, PETRI_TRANSITIONS=367} [2023-11-17 15:59:34,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2023-11-17 15:59:34,489 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 367 transitions, 6529 flow [2023-11-17 15:59:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:34,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:34,495 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 15:59:34,692 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,SelfDestructingSolverStorable15 [2023-11-17 15:59:34,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:34,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1546486476, now seen corresponding path program 10 times [2023-11-17 15:59:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589175004] [2023-11-17 15:59:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:34,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589175004] [2023-11-17 15:59:34,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589175004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:34,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:34,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859996939] [2023-11-17 15:59:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:34,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:34,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:34,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 367 transitions, 6529 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:34,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:34,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:35,893 INFO L124 PetriNetUnfolderBase]: 3889/5858 cut-off events. [2023-11-17 15:59:35,893 INFO L125 PetriNetUnfolderBase]: For 107416/107416 co-relation queries the response was YES. [2023-11-17 15:59:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 5858 events. 3889/5858 cut-off events. For 107416/107416 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 31485 event pairs, 1177 based on Foata normal form. 16/5874 useless extension candidates. Maximal degree in co-relation 43877. Up to 5015 conditions per place. [2023-11-17 15:59:35,947 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 320 selfloop transitions, 137 changer transitions 0/457 dead transitions. [2023-11-17 15:59:35,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 457 transitions, 8630 flow [2023-11-17 15:59:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2023-11-17 15:59:35,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45626822157434405 [2023-11-17 15:59:35,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2023-11-17 15:59:35,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2023-11-17 15:59:35,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:35,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2023-11-17 15:59:35,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:35,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:35,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:35,963 INFO L175 Difference]: Start difference. First operand has 172 places, 367 transitions, 6529 flow. Second operand 7 states and 626 transitions. [2023-11-17 15:59:35,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 457 transitions, 8630 flow [2023-11-17 15:59:36,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 457 transitions, 8514 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:36,245 INFO L231 Difference]: Finished difference. Result has 181 places, 404 transitions, 7639 flow [2023-11-17 15:59:36,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6428, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7639, PETRI_PLACES=181, PETRI_TRANSITIONS=404} [2023-11-17 15:59:36,246 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2023-11-17 15:59:36,246 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 404 transitions, 7639 flow [2023-11-17 15:59:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:36,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:36,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:59:36,273 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -628498342, now seen corresponding path program 5 times [2023-11-17 15:59:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813830406] [2023-11-17 15:59:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:36,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:36,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813830406] [2023-11-17 15:59:36,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813830406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:36,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:36,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587408985] [2023-11-17 15:59:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:36,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:36,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 404 transitions, 7639 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:37,542 INFO L124 PetriNetUnfolderBase]: 3887/5916 cut-off events. [2023-11-17 15:59:37,542 INFO L125 PetriNetUnfolderBase]: For 118226/118226 co-relation queries the response was YES. [2023-11-17 15:59:37,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47148 conditions, 5916 events. 3887/5916 cut-off events. For 118226/118226 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 32465 event pairs, 995 based on Foata normal form. 32/5948 useless extension candidates. Maximal degree in co-relation 46553. Up to 3765 conditions per place. [2023-11-17 15:59:37,598 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 357 selfloop transitions, 100 changer transitions 6/463 dead transitions. [2023-11-17 15:59:37,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 463 transitions, 8965 flow [2023-11-17 15:59:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2023-11-17 15:59:37,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584548104956268 [2023-11-17 15:59:37,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2023-11-17 15:59:37,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2023-11-17 15:59:37,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:37,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2023-11-17 15:59:37,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:37,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:37,602 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:37,602 INFO L175 Difference]: Start difference. First operand has 181 places, 404 transitions, 7639 flow. Second operand 7 states and 629 transitions. [2023-11-17 15:59:37,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 463 transitions, 8965 flow [2023-11-17 15:59:38,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 463 transitions, 8783 flow, removed 91 selfloop flow, removed 0 redundant places. [2023-11-17 15:59:38,043 INFO L231 Difference]: Finished difference. Result has 188 places, 400 transitions, 7594 flow [2023-11-17 15:59:38,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=7394, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7594, PETRI_PLACES=188, PETRI_TRANSITIONS=400} [2023-11-17 15:59:38,044 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2023-11-17 15:59:38,044 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 400 transitions, 7594 flow [2023-11-17 15:59:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:38,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:38,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:59:38,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1571524938, now seen corresponding path program 6 times [2023-11-17 15:59:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930306280] [2023-11-17 15:59:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:38,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:38,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930306280] [2023-11-17 15:59:38,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930306280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:38,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308165759] [2023-11-17 15:59:38,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:38,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:38,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:38,182 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 15:59:38,210 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 15:59:38,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:59:38,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:38,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:59:38,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:38,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:38,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308165759] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:38,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:38,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-17 15:59:38,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728446766] [2023-11-17 15:59:38,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:38,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:38,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 400 transitions, 7594 flow. Second operand has 15 states, 15 states have (on average 81.4) internal successors, (1221), 15 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:38,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:38,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:38,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:40,565 INFO L124 PetriNetUnfolderBase]: 5951/8947 cut-off events. [2023-11-17 15:59:40,565 INFO L125 PetriNetUnfolderBase]: For 192445/192445 co-relation queries the response was YES. [2023-11-17 15:59:40,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72743 conditions, 8947 events. 5951/8947 cut-off events. For 192445/192445 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 51819 event pairs, 982 based on Foata normal form. 66/9013 useless extension candidates. Maximal degree in co-relation 72056. Up to 3482 conditions per place. [2023-11-17 15:59:40,653 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 609 selfloop transitions, 183 changer transitions 0/792 dead transitions. [2023-11-17 15:59:40,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 792 transitions, 15269 flow [2023-11-17 15:59:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1683 transitions. [2023-11-17 15:59:40,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519334049409237 [2023-11-17 15:59:40,670 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1683 transitions. [2023-11-17 15:59:40,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1683 transitions. [2023-11-17 15:59:40,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:40,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1683 transitions. [2023-11-17 15:59:40,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.57894736842105) internal successors, (1683), 19 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:40,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:40,674 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:40,674 INFO L175 Difference]: Start difference. First operand has 188 places, 400 transitions, 7594 flow. Second operand 19 states and 1683 transitions. [2023-11-17 15:59:40,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 792 transitions, 15269 flow [2023-11-17 15:59:41,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 792 transitions, 15032 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 15:59:41,323 INFO L231 Difference]: Finished difference. Result has 213 places, 473 transitions, 9420 flow [2023-11-17 15:59:41,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9420, PETRI_PLACES=213, PETRI_TRANSITIONS=473} [2023-11-17 15:59:41,324 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2023-11-17 15:59:41,325 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 473 transitions, 9420 flow [2023-11-17 15:59:41,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 81.4) internal successors, (1221), 15 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:41,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:41,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:41,331 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 15:59:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:41,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -837324630, now seen corresponding path program 7 times [2023-11-17 15:59:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025112327] [2023-11-17 15:59:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:41,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025112327] [2023-11-17 15:59:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025112327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158534610] [2023-11-17 15:59:41,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:41,637 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 15:59:41,638 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 15:59:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:41,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:59:41,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:41,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:41,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158534610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:41,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 15:59:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389585221] [2023-11-17 15:59:41,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:41,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:59:41,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:59:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:59:41,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:41,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 473 transitions, 9420 flow. Second operand has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:41,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:41,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:43,504 INFO L124 PetriNetUnfolderBase]: 5927/8899 cut-off events. [2023-11-17 15:59:43,504 INFO L125 PetriNetUnfolderBase]: For 230628/230628 co-relation queries the response was YES. [2023-11-17 15:59:43,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79331 conditions, 8899 events. 5927/8899 cut-off events. For 230628/230628 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 51017 event pairs, 1848 based on Foata normal form. 20/8919 useless extension candidates. Maximal degree in co-relation 79129. Up to 6600 conditions per place. [2023-11-17 15:59:43,630 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 402 selfloop transitions, 124 changer transitions 0/526 dead transitions. [2023-11-17 15:59:43,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 526 transitions, 10943 flow [2023-11-17 15:59:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2023-11-17 15:59:43,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584548104956268 [2023-11-17 15:59:43,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2023-11-17 15:59:43,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2023-11-17 15:59:43,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:43,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2023-11-17 15:59:43,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:43,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:43,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:43,633 INFO L175 Difference]: Start difference. First operand has 213 places, 473 transitions, 9420 flow. Second operand 7 states and 629 transitions. [2023-11-17 15:59:43,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 526 transitions, 10943 flow [2023-11-17 15:59:44,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 526 transitions, 10645 flow, removed 88 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:44,640 INFO L231 Difference]: Finished difference. Result has 213 places, 472 transitions, 9361 flow [2023-11-17 15:59:44,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=9113, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9361, PETRI_PLACES=213, PETRI_TRANSITIONS=472} [2023-11-17 15:59:44,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2023-11-17 15:59:44,641 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 472 transitions, 9361 flow [2023-11-17 15:59:44,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:44,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:44,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:44,645 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 15:59:44,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:44,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:44,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:44,845 INFO L85 PathProgramCache]: Analyzing trace with hash -512946588, now seen corresponding path program 11 times [2023-11-17 15:59:44,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:44,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390509173] [2023-11-17 15:59:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:44,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390509173] [2023-11-17 15:59:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390509173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207968378] [2023-11-17 15:59:44,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:44,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:44,997 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 15:59:45,041 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 15:59:45,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:45,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:45,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:59:45,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:45,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207968378] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:45,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-11-17 15:59:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238506335] [2023-11-17 15:59:45,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:59:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:59:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:59:45,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:45,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 472 transitions, 9361 flow. Second operand has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:45,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:45,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:45,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:48,226 INFO L124 PetriNetUnfolderBase]: 7283/11041 cut-off events. [2023-11-17 15:59:48,227 INFO L125 PetriNetUnfolderBase]: For 273468/273468 co-relation queries the response was YES. [2023-11-17 15:59:48,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96364 conditions, 11041 events. 7283/11041 cut-off events. For 273468/273468 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 67279 event pairs, 1471 based on Foata normal form. 40/11081 useless extension candidates. Maximal degree in co-relation 95490. Up to 5620 conditions per place. [2023-11-17 15:59:48,376 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 358 selfloop transitions, 437 changer transitions 0/795 dead transitions. [2023-11-17 15:59:48,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 795 transitions, 16090 flow [2023-11-17 15:59:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1693 transitions. [2023-11-17 15:59:48,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546186895810956 [2023-11-17 15:59:48,378 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1693 transitions. [2023-11-17 15:59:48,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1693 transitions. [2023-11-17 15:59:48,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:48,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1693 transitions. [2023-11-17 15:59:48,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.10526315789474) internal successors, (1693), 19 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,383 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,383 INFO L175 Difference]: Start difference. First operand has 213 places, 472 transitions, 9361 flow. Second operand 19 states and 1693 transitions. [2023-11-17 15:59:48,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 795 transitions, 16090 flow [2023-11-17 15:59:49,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 795 transitions, 15846 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-17 15:59:49,759 INFO L231 Difference]: Finished difference. Result has 237 places, 617 transitions, 13953 flow [2023-11-17 15:59:49,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=9123, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13953, PETRI_PLACES=237, PETRI_TRANSITIONS=617} [2023-11-17 15:59:49,759 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2023-11-17 15:59:49,760 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 617 transitions, 13953 flow [2023-11-17 15:59:49,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.75) internal successors, (981), 12 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:49,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:49,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:49,765 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 15:59:49,964 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,SelfDestructingSolverStorable20 [2023-11-17 15:59:49,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1239877842, now seen corresponding path program 12 times [2023-11-17 15:59:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822693710] [2023-11-17 15:59:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822693710] [2023-11-17 15:59:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822693710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:50,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:50,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:59:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258605340] [2023-11-17 15:59:50,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:59:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:59:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:50,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:50,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 617 transitions, 13953 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:50,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:50,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:50,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:53,080 INFO L124 PetriNetUnfolderBase]: 7300/11064 cut-off events. [2023-11-17 15:59:53,080 INFO L125 PetriNetUnfolderBase]: For 336775/336775 co-relation queries the response was YES. [2023-11-17 15:59:53,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104928 conditions, 11064 events. 7300/11064 cut-off events. For 336775/336775 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 67130 event pairs, 2405 based on Foata normal form. 2/11066 useless extension candidates. Maximal degree in co-relation 104020. Up to 10466 conditions per place. [2023-11-17 15:59:53,229 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 541 selfloop transitions, 109 changer transitions 2/652 dead transitions. [2023-11-17 15:59:53,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 652 transitions, 15721 flow [2023-11-17 15:59:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:53,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2023-11-17 15:59:53,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446064139941691 [2023-11-17 15:59:53,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2023-11-17 15:59:53,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2023-11-17 15:59:53,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:53,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2023-11-17 15:59:53,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,233 INFO L175 Difference]: Start difference. First operand has 237 places, 617 transitions, 13953 flow. Second operand 7 states and 610 transitions. [2023-11-17 15:59:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 652 transitions, 15721 flow [2023-11-17 15:59:54,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 652 transitions, 15309 flow, removed 90 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:54,995 INFO L231 Difference]: Finished difference. Result has 241 places, 627 transitions, 14013 flow [2023-11-17 15:59:54,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=13557, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14013, PETRI_PLACES=241, PETRI_TRANSITIONS=627} [2023-11-17 15:59:54,996 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2023-11-17 15:59:54,996 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 627 transitions, 14013 flow [2023-11-17 15:59:54,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:54,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:54,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:54,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 15:59:54,997 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:59:54,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash -335960194, now seen corresponding path program 13 times [2023-11-17 15:59:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:54,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276537522] [2023-11-17 15:59:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:55,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276537522] [2023-11-17 15:59:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276537522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348988199] [2023-11-17 15:59:55,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:55,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:55,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:55,101 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 15:59:55,117 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 15:59:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:55,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:59:55,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:55,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:55,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348988199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:55,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:55,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-11-17 15:59:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834025870] [2023-11-17 15:59:55,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:55,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:59:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:59:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:59:55,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 15:59:55,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 627 transitions, 14013 flow. Second operand has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:55,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:55,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 15:59:55,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:58,008 INFO L124 PetriNetUnfolderBase]: 7307/11081 cut-off events. [2023-11-17 15:59:58,008 INFO L125 PetriNetUnfolderBase]: For 323279/323279 co-relation queries the response was YES. [2023-11-17 15:59:58,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103979 conditions, 11081 events. 7307/11081 cut-off events. For 323279/323279 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 67326 event pairs, 2037 based on Foata normal form. 36/11117 useless extension candidates. Maximal degree in co-relation 103233. Up to 9160 conditions per place. [2023-11-17 15:59:58,171 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 492 selfloop transitions, 260 changer transitions 0/752 dead transitions. [2023-11-17 15:59:58,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 752 transitions, 17131 flow [2023-11-17 15:59:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:59:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:59:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1157 transitions. [2023-11-17 15:59:58,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2023-11-17 15:59:58,173 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1157 transitions. [2023-11-17 15:59:58,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1157 transitions. [2023-11-17 15:59:58,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:58,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1157 transitions. [2023-11-17 15:59:58,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.0) internal successors, (1157), 13 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:58,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 196.0) internal successors, (2744), 14 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:58,176 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 196.0) internal successors, (2744), 14 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:58,176 INFO L175 Difference]: Start difference. First operand has 241 places, 627 transitions, 14013 flow. Second operand 13 states and 1157 transitions. [2023-11-17 15:59:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 752 transitions, 17131 flow [2023-11-17 15:59:59,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 752 transitions, 16909 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:59,817 INFO L231 Difference]: Finished difference. Result has 257 places, 647 transitions, 14929 flow [2023-11-17 15:59:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=13795, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14929, PETRI_PLACES=257, PETRI_TRANSITIONS=647} [2023-11-17 15:59:59,818 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2023-11-17 15:59:59,818 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 647 transitions, 14929 flow [2023-11-17 15:59:59,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.83333333333333) internal successors, (982), 12 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:59,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:59,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:59,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-17 16:00:00,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:00,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:00,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash -484411440, now seen corresponding path program 14 times [2023-11-17 16:00:00,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:00,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011047627] [2023-11-17 16:00:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:00,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011047627] [2023-11-17 16:00:00,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011047627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:00,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:00,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998514921] [2023-11-17 16:00:00,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:00,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:00,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:00,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 647 transitions, 14929 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:00,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:00,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:00,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:02,720 INFO L124 PetriNetUnfolderBase]: 7356/11152 cut-off events. [2023-11-17 16:00:02,720 INFO L125 PetriNetUnfolderBase]: For 344439/344439 co-relation queries the response was YES. [2023-11-17 16:00:02,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107051 conditions, 11152 events. 7356/11152 cut-off events. For 344439/344439 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 67798 event pairs, 2383 based on Foata normal form. 2/11154 useless extension candidates. Maximal degree in co-relation 106137. Up to 10526 conditions per place. [2023-11-17 16:00:02,869 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 570 selfloop transitions, 115 changer transitions 2/687 dead transitions. [2023-11-17 16:00:02,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 687 transitions, 16894 flow [2023-11-17 16:00:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-11-17 16:00:02,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2023-11-17 16:00:02,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-11-17 16:00:02,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-11-17 16:00:02,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:02,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-11-17 16:00:02,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:02,872 INFO L175 Difference]: Start difference. First operand has 257 places, 647 transitions, 14929 flow. Second operand 7 states and 609 transitions. [2023-11-17 16:00:02,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 687 transitions, 16894 flow [2023-11-17 16:00:04,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 687 transitions, 16566 flow, removed 56 selfloop flow, removed 3 redundant places. [2023-11-17 16:00:04,611 INFO L231 Difference]: Finished difference. Result has 262 places, 656 transitions, 15091 flow [2023-11-17 16:00:04,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=14619, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15091, PETRI_PLACES=262, PETRI_TRANSITIONS=656} [2023-11-17 16:00:04,612 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2023-11-17 16:00:04,612 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 656 transitions, 15091 flow [2023-11-17 16:00:04,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:04,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:04,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:04,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 16:00:04,613 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:04,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1050286674, now seen corresponding path program 15 times [2023-11-17 16:00:04,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:04,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600292217] [2023-11-17 16:00:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:04,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600292217] [2023-11-17 16:00:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600292217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654394210] [2023-11-17 16:00:04,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:00:04,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:04,737 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 16:00:04,782 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 16:00:04,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:00:04,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:04,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:00:04,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:04,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:05,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654394210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:05,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:05,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-11-17 16:00:05,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598391498] [2023-11-17 16:00:05,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:05,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:00:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:00:05,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:00:05,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:05,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 656 transitions, 15091 flow. Second operand has 16 states, 16 states have (on average 81.625) internal successors, (1306), 16 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:05,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:05,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:05,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:08,305 INFO L124 PetriNetUnfolderBase]: 8273/12301 cut-off events. [2023-11-17 16:00:08,305 INFO L125 PetriNetUnfolderBase]: For 372621/372621 co-relation queries the response was YES. [2023-11-17 16:00:08,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118944 conditions, 12301 events. 8273/12301 cut-off events. For 372621/372621 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 73520 event pairs, 2037 based on Foata normal form. 38/12339 useless extension candidates. Maximal degree in co-relation 118095. Up to 9948 conditions per place. [2023-11-17 16:00:08,556 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 626 selfloop transitions, 341 changer transitions 0/967 dead transitions. [2023-11-17 16:00:08,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 967 transitions, 22537 flow [2023-11-17 16:00:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:00:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:00:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1846 transitions. [2023-11-17 16:00:08,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484936831875607 [2023-11-17 16:00:08,558 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1846 transitions. [2023-11-17 16:00:08,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1846 transitions. [2023-11-17 16:00:08,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:08,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1846 transitions. [2023-11-17 16:00:08,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.9047619047619) internal successors, (1846), 21 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 196.0) internal successors, (4312), 22 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,563 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 196.0) internal successors, (4312), 22 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:08,563 INFO L175 Difference]: Start difference. First operand has 262 places, 656 transitions, 15091 flow. Second operand 21 states and 1846 transitions. [2023-11-17 16:00:08,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 967 transitions, 22537 flow [2023-11-17 16:00:10,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 967 transitions, 22251 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-17 16:00:10,436 INFO L231 Difference]: Finished difference. Result has 282 places, 796 transitions, 18992 flow [2023-11-17 16:00:10,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=14841, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18992, PETRI_PLACES=282, PETRI_TRANSITIONS=796} [2023-11-17 16:00:10,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2023-11-17 16:00:10,437 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 796 transitions, 18992 flow [2023-11-17 16:00:10,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 81.625) internal successors, (1306), 16 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:10,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:10,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:10,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-17 16:00:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:10,642 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:10,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1224926478, now seen corresponding path program 16 times [2023-11-17 16:00:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:10,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308050898] [2023-11-17 16:00:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:10,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:10,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308050898] [2023-11-17 16:00:10,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308050898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:10,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542046168] [2023-11-17 16:00:10,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:10,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:10,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:10,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:10,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 796 transitions, 18992 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:10,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:10,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:10,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:13,846 INFO L124 PetriNetUnfolderBase]: 8272/12302 cut-off events. [2023-11-17 16:00:13,847 INFO L125 PetriNetUnfolderBase]: For 395487/395487 co-relation queries the response was YES. [2023-11-17 16:00:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123148 conditions, 12302 events. 8272/12302 cut-off events. For 395487/395487 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 73327 event pairs, 2492 based on Foata normal form. 2/12304 useless extension candidates. Maximal degree in co-relation 122423. Up to 11609 conditions per place. [2023-11-17 16:00:14,047 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 698 selfloop transitions, 119 changer transitions 2/819 dead transitions. [2023-11-17 16:00:14,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 819 transitions, 20876 flow [2023-11-17 16:00:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2023-11-17 16:00:14,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446064139941691 [2023-11-17 16:00:14,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2023-11-17 16:00:14,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2023-11-17 16:00:14,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:14,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2023-11-17 16:00:14,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:14,051 INFO L175 Difference]: Start difference. First operand has 282 places, 796 transitions, 18992 flow. Second operand 7 states and 612 transitions. [2023-11-17 16:00:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 819 transitions, 20876 flow [2023-11-17 16:00:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 819 transitions, 20383 flow, removed 154 selfloop flow, removed 4 redundant places. [2023-11-17 16:00:16,524 INFO L231 Difference]: Finished difference. Result has 287 places, 800 transitions, 18848 flow [2023-11-17 16:00:16,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=18500, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18848, PETRI_PLACES=287, PETRI_TRANSITIONS=800} [2023-11-17 16:00:16,525 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2023-11-17 16:00:16,525 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 800 transitions, 18848 flow [2023-11-17 16:00:16,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:16,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:16,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:16,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 16:00:16,526 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:16,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1469602964, now seen corresponding path program 17 times [2023-11-17 16:00:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268765870] [2023-11-17 16:00:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268765870] [2023-11-17 16:00:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268765870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606211134] [2023-11-17 16:00:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:16,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:16,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 800 transitions, 18848 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:16,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:16,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:16,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:19,642 INFO L124 PetriNetUnfolderBase]: 8277/12309 cut-off events. [2023-11-17 16:00:19,643 INFO L125 PetriNetUnfolderBase]: For 386136/386136 co-relation queries the response was YES. [2023-11-17 16:00:19,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121962 conditions, 12309 events. 8277/12309 cut-off events. For 386136/386136 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 73408 event pairs, 2542 based on Foata normal form. 2/12311 useless extension candidates. Maximal degree in co-relation 121309. Up to 11613 conditions per place. [2023-11-17 16:00:19,827 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 699 selfloop transitions, 121 changer transitions 2/822 dead transitions. [2023-11-17 16:00:19,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 822 transitions, 20761 flow [2023-11-17 16:00:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2023-11-17 16:00:19,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446064139941691 [2023-11-17 16:00:19,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2023-11-17 16:00:19,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2023-11-17 16:00:19,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:19,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2023-11-17 16:00:19,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:19,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:19,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:19,830 INFO L175 Difference]: Start difference. First operand has 287 places, 800 transitions, 18848 flow. Second operand 7 states and 612 transitions. [2023-11-17 16:00:19,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 822 transitions, 20761 flow [2023-11-17 16:00:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 822 transitions, 20642 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 16:00:22,246 INFO L231 Difference]: Finished difference. Result has 291 places, 803 transitions, 19054 flow [2023-11-17 16:00:22,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=18731, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19054, PETRI_PLACES=291, PETRI_TRANSITIONS=803} [2023-11-17 16:00:22,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 262 predicate places. [2023-11-17 16:00:22,247 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 803 transitions, 19054 flow [2023-11-17 16:00:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:22,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:22,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:22,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 16:00:22,247 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:22,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1603839114, now seen corresponding path program 18 times [2023-11-17 16:00:22,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:22,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750662663] [2023-11-17 16:00:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:22,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750662663] [2023-11-17 16:00:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750662663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:22,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:22,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:22,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117134210] [2023-11-17 16:00:22,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:22,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:22,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:22,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 803 transitions, 19054 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:22,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:22,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:22,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:25,574 INFO L124 PetriNetUnfolderBase]: 8292/12334 cut-off events. [2023-11-17 16:00:25,575 INFO L125 PetriNetUnfolderBase]: For 389831/389831 co-relation queries the response was YES. [2023-11-17 16:00:25,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122360 conditions, 12334 events. 8292/12334 cut-off events. For 389831/389831 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 73660 event pairs, 2498 based on Foata normal form. 12/12346 useless extension candidates. Maximal degree in co-relation 121707. Up to 11623 conditions per place. [2023-11-17 16:00:25,739 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 706 selfloop transitions, 124 changer transitions 0/830 dead transitions. [2023-11-17 16:00:25,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 830 transitions, 21037 flow [2023-11-17 16:00:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-11-17 16:00:25,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-11-17 16:00:25,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-11-17 16:00:25,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-11-17 16:00:25,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:25,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-11-17 16:00:25,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:25,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:25,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:25,742 INFO L175 Difference]: Start difference. First operand has 291 places, 803 transitions, 19054 flow. Second operand 7 states and 616 transitions. [2023-11-17 16:00:25,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 830 transitions, 21037 flow [2023-11-17 16:00:28,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 830 transitions, 20793 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-17 16:00:28,178 INFO L231 Difference]: Finished difference. Result has 293 places, 806 transitions, 19153 flow [2023-11-17 16:00:28,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=18810, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19153, PETRI_PLACES=293, PETRI_TRANSITIONS=806} [2023-11-17 16:00:28,179 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 264 predicate places. [2023-11-17 16:00:28,179 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 806 transitions, 19153 flow [2023-11-17 16:00:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:28,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:28,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:28,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 16:00:28,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:28,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 360560012, now seen corresponding path program 19 times [2023-11-17 16:00:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:28,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100438035] [2023-11-17 16:00:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:28,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100438035] [2023-11-17 16:00:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100438035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:28,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:28,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139098044] [2023-11-17 16:00:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:28,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:28,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:28,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 806 transitions, 19153 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:28,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:28,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:31,317 INFO L124 PetriNetUnfolderBase]: 8290/12332 cut-off events. [2023-11-17 16:00:31,317 INFO L125 PetriNetUnfolderBase]: For 395501/395501 co-relation queries the response was YES. [2023-11-17 16:00:31,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122421 conditions, 12332 events. 8290/12332 cut-off events. For 395501/395501 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 73553 event pairs, 2518 based on Foata normal form. 2/12334 useless extension candidates. Maximal degree in co-relation 121767. Up to 11639 conditions per place. [2023-11-17 16:00:31,614 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 694 selfloop transitions, 131 changer transitions 2/827 dead transitions. [2023-11-17 16:00:31,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 827 transitions, 21001 flow [2023-11-17 16:00:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2023-11-17 16:00:31,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446064139941691 [2023-11-17 16:00:31,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2023-11-17 16:00:31,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2023-11-17 16:00:31,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:31,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2023-11-17 16:00:31,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:31,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:31,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:31,622 INFO L175 Difference]: Start difference. First operand has 293 places, 806 transitions, 19153 flow. Second operand 7 states and 610 transitions. [2023-11-17 16:00:31,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 827 transitions, 21001 flow [2023-11-17 16:00:33,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 827 transitions, 20751 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 16:00:33,957 INFO L231 Difference]: Finished difference. Result has 295 places, 805 transitions, 19132 flow [2023-11-17 16:00:33,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=18864, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19132, PETRI_PLACES=295, PETRI_TRANSITIONS=805} [2023-11-17 16:00:33,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 266 predicate places. [2023-11-17 16:00:33,959 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 805 transitions, 19132 flow [2023-11-17 16:00:33,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:33,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:33,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:33,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 16:00:33,960 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:33,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash -618647590, now seen corresponding path program 20 times [2023-11-17 16:00:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840639577] [2023-11-17 16:00:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840639577] [2023-11-17 16:00:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840639577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:34,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:34,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:34,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973103330] [2023-11-17 16:00:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:34,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:34,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 805 transitions, 19132 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:34,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:34,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:34,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:37,311 INFO L124 PetriNetUnfolderBase]: 8305/12357 cut-off events. [2023-11-17 16:00:37,311 INFO L125 PetriNetUnfolderBase]: For 397480/397480 co-relation queries the response was YES. [2023-11-17 16:00:37,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122720 conditions, 12357 events. 8305/12357 cut-off events. For 397480/397480 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 73725 event pairs, 2530 based on Foata normal form. 12/12369 useless extension candidates. Maximal degree in co-relation 122065. Up to 11649 conditions per place. [2023-11-17 16:00:37,575 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 710 selfloop transitions, 132 changer transitions 0/842 dead transitions. [2023-11-17 16:00:37,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 842 transitions, 21288 flow [2023-11-17 16:00:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-11-17 16:00:37,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467930029154519 [2023-11-17 16:00:37,576 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-11-17 16:00:37,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-11-17 16:00:37,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:37,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-11-17 16:00:37,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:37,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:37,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:37,579 INFO L175 Difference]: Start difference. First operand has 295 places, 805 transitions, 19132 flow. Second operand 7 states and 613 transitions. [2023-11-17 16:00:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 842 transitions, 21288 flow [2023-11-17 16:00:40,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 842 transitions, 21135 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:00:40,107 INFO L231 Difference]: Finished difference. Result has 299 places, 808 transitions, 19344 flow [2023-11-17 16:00:40,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=18979, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19344, PETRI_PLACES=299, PETRI_TRANSITIONS=808} [2023-11-17 16:00:40,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2023-11-17 16:00:40,109 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 808 transitions, 19344 flow [2023-11-17 16:00:40,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:40,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:40,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 16:00:40,109 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:40,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash 226323862, now seen corresponding path program 21 times [2023-11-17 16:00:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69231040] [2023-11-17 16:00:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:40,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69231040] [2023-11-17 16:00:40,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69231040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:40,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943984573] [2023-11-17 16:00:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:40,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:40,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 808 transitions, 19344 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:40,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:40,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:43,698 INFO L124 PetriNetUnfolderBase]: 8305/12353 cut-off events. [2023-11-17 16:00:43,699 INFO L125 PetriNetUnfolderBase]: For 399949/399949 co-relation queries the response was YES. [2023-11-17 16:00:43,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123032 conditions, 12353 events. 8305/12353 cut-off events. For 399949/399949 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 73643 event pairs, 2536 based on Foata normal form. 12/12365 useless extension candidates. Maximal degree in co-relation 122376. Up to 11645 conditions per place. [2023-11-17 16:00:43,886 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 702 selfloop transitions, 134 changer transitions 0/836 dead transitions. [2023-11-17 16:00:43,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 836 transitions, 21337 flow [2023-11-17 16:00:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-11-17 16:00:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44752186588921283 [2023-11-17 16:00:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-11-17 16:00:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-11-17 16:00:43,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:43,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-11-17 16:00:43,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:43,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:43,890 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:43,890 INFO L175 Difference]: Start difference. First operand has 299 places, 808 transitions, 19344 flow. Second operand 7 states and 614 transitions. [2023-11-17 16:00:43,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 836 transitions, 21337 flow [2023-11-17 16:00:46,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 836 transitions, 21167 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 16:00:46,482 INFO L231 Difference]: Finished difference. Result has 303 places, 809 transitions, 19484 flow [2023-11-17 16:00:46,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=19174, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19484, PETRI_PLACES=303, PETRI_TRANSITIONS=809} [2023-11-17 16:00:46,483 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 274 predicate places. [2023-11-17 16:00:46,484 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 809 transitions, 19484 flow [2023-11-17 16:00:46,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:46,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:46,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 16:00:46,484 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:46,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1381199890, now seen corresponding path program 3 times [2023-11-17 16:00:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33948696] [2023-11-17 16:00:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33948696] [2023-11-17 16:00:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33948696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:46,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:46,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:46,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159683713] [2023-11-17 16:00:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:46,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:46,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:46,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:46,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 809 transitions, 19484 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:46,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:46,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:46,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:50,040 INFO L124 PetriNetUnfolderBase]: 8311/12400 cut-off events. [2023-11-17 16:00:50,040 INFO L125 PetriNetUnfolderBase]: For 399196/399196 co-relation queries the response was YES. [2023-11-17 16:00:50,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123493 conditions, 12400 events. 8311/12400 cut-off events. For 399196/399196 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 74650 event pairs, 2477 based on Foata normal form. 24/12424 useless extension candidates. Maximal degree in co-relation 122836. Up to 11560 conditions per place. [2023-11-17 16:00:50,214 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 719 selfloop transitions, 121 changer transitions 10/850 dead transitions. [2023-11-17 16:00:50,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 850 transitions, 21533 flow [2023-11-17 16:00:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2023-11-17 16:00:50,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45626822157434405 [2023-11-17 16:00:50,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2023-11-17 16:00:50,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2023-11-17 16:00:50,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:50,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2023-11-17 16:00:50,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:50,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:50,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:50,220 INFO L175 Difference]: Start difference. First operand has 303 places, 809 transitions, 19484 flow. Second operand 7 states and 626 transitions. [2023-11-17 16:00:50,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 850 transitions, 21533 flow [2023-11-17 16:00:52,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 850 transitions, 21226 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-17 16:00:52,885 INFO L231 Difference]: Finished difference. Result has 306 places, 809 transitions, 19446 flow [2023-11-17 16:00:52,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=19152, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19446, PETRI_PLACES=306, PETRI_TRANSITIONS=809} [2023-11-17 16:00:52,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 277 predicate places. [2023-11-17 16:00:52,886 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 809 transitions, 19446 flow [2023-11-17 16:00:52,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:52,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:52,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:52,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 16:00:52,886 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:52,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1365870084, now seen corresponding path program 4 times [2023-11-17 16:00:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:52,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876352283] [2023-11-17 16:00:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:52,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876352283] [2023-11-17 16:00:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876352283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:00:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:00:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033089] [2023-11-17 16:00:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:00:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:00:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:00:52,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:00:52,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 809 transitions, 19446 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:52,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:52,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:00:52,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:56,371 INFO L124 PetriNetUnfolderBase]: 8298/12395 cut-off events. [2023-11-17 16:00:56,372 INFO L125 PetriNetUnfolderBase]: For 398753/398753 co-relation queries the response was YES. [2023-11-17 16:00:56,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123457 conditions, 12395 events. 8298/12395 cut-off events. For 398753/398753 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 74666 event pairs, 2507 based on Foata normal form. 18/12413 useless extension candidates. Maximal degree in co-relation 123060. Up to 11634 conditions per place. [2023-11-17 16:00:56,660 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 721 selfloop transitions, 113 changer transitions 12/846 dead transitions. [2023-11-17 16:00:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 846 transitions, 21450 flow [2023-11-17 16:00:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:00:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:00:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 624 transitions. [2023-11-17 16:00:56,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45481049562682213 [2023-11-17 16:00:56,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 624 transitions. [2023-11-17 16:00:56,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 624 transitions. [2023-11-17 16:00:56,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:56,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 624 transitions. [2023-11-17 16:00:56,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:56,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:56,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:56,663 INFO L175 Difference]: Start difference. First operand has 306 places, 809 transitions, 19446 flow. Second operand 7 states and 624 transitions. [2023-11-17 16:00:56,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 846 transitions, 21450 flow [2023-11-17 16:00:59,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 846 transitions, 21206 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 16:00:59,342 INFO L231 Difference]: Finished difference. Result has 309 places, 805 transitions, 19343 flow [2023-11-17 16:00:59,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=19204, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19343, PETRI_PLACES=309, PETRI_TRANSITIONS=805} [2023-11-17 16:00:59,343 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2023-11-17 16:00:59,343 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 805 transitions, 19343 flow [2023-11-17 16:00:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:59,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:59,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:59,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 16:00:59,344 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:59,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1767601400, now seen corresponding path program 8 times [2023-11-17 16:00:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570940043] [2023-11-17 16:00:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570940043] [2023-11-17 16:00:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570940043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:59,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851193614] [2023-11-17 16:00:59,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:59,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:59,449 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 16:00:59,452 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 16:00:59,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:59,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:59,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:00:59,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:59,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:00,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851193614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:00,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:00,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 16:01:00,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931250944] [2023-11-17 16:01:00,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:00,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:01:00,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:00,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:01:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:01:00,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:00,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 805 transitions, 19343 flow. Second operand has 13 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:00,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:00,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:00,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:03,935 INFO L124 PetriNetUnfolderBase]: 9045/13559 cut-off events. [2023-11-17 16:01:03,935 INFO L125 PetriNetUnfolderBase]: For 436913/436913 co-relation queries the response was YES. [2023-11-17 16:01:04,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134360 conditions, 13559 events. 9045/13559 cut-off events. For 436913/436913 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 83757 event pairs, 2046 based on Foata normal form. 32/13591 useless extension candidates. Maximal degree in co-relation 133956. Up to 8225 conditions per place. [2023-11-17 16:01:04,133 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 549 selfloop transitions, 398 changer transitions 0/947 dead transitions. [2023-11-17 16:01:04,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 947 transitions, 23558 flow [2023-11-17 16:01:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:01:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:01:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 985 transitions. [2023-11-17 16:01:04,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45686456400742115 [2023-11-17 16:01:04,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 985 transitions. [2023-11-17 16:01:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 985 transitions. [2023-11-17 16:01:04,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 985 transitions. [2023-11-17 16:01:04,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.54545454545455) internal successors, (985), 11 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:04,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:04,137 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:04,137 INFO L175 Difference]: Start difference. First operand has 309 places, 805 transitions, 19343 flow. Second operand 11 states and 985 transitions. [2023-11-17 16:01:04,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 947 transitions, 23558 flow [2023-11-17 16:01:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 947 transitions, 23305 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 16:01:07,118 INFO L231 Difference]: Finished difference. Result has 318 places, 848 transitions, 21444 flow [2023-11-17 16:01:07,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=19112, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21444, PETRI_PLACES=318, PETRI_TRANSITIONS=848} [2023-11-17 16:01:07,120 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2023-11-17 16:01:07,120 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 848 transitions, 21444 flow [2023-11-17 16:01:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:07,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:07,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-17 16:01:07,324 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,SelfDestructingSolverStorable33 [2023-11-17 16:01:07,325 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:07,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1294508056, now seen corresponding path program 22 times [2023-11-17 16:01:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398260187] [2023-11-17 16:01:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:07,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:07,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398260187] [2023-11-17 16:01:07,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398260187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:07,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139818049] [2023-11-17 16:01:07,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:01:07,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:07,411 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 16:01:07,446 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 16:01:07,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:01:07,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:07,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:01:07,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:07,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139818049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:07,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:07,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-11-17 16:01:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996999546] [2023-11-17 16:01:07,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:01:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:01:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:01:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:07,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 848 transitions, 21444 flow. Second operand has 14 states, 14 states have (on average 81.57142857142857) internal successors, (1142), 14 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:07,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:07,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:11,999 INFO L124 PetriNetUnfolderBase]: 9338/14088 cut-off events. [2023-11-17 16:01:11,999 INFO L125 PetriNetUnfolderBase]: For 488730/488730 co-relation queries the response was YES. [2023-11-17 16:01:12,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144468 conditions, 14088 events. 9338/14088 cut-off events. For 488730/488730 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 88674 event pairs, 2388 based on Foata normal form. 34/14122 useless extension candidates. Maximal degree in co-relation 143804. Up to 11763 conditions per place. [2023-11-17 16:01:12,206 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 729 selfloop transitions, 310 changer transitions 0/1039 dead transitions. [2023-11-17 16:01:12,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 1039 transitions, 26577 flow [2023-11-17 16:01:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:01:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:01:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1662 transitions. [2023-11-17 16:01:12,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462943071965628 [2023-11-17 16:01:12,208 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1662 transitions. [2023-11-17 16:01:12,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1662 transitions. [2023-11-17 16:01:12,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:12,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1662 transitions. [2023-11-17 16:01:12,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:12,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:12,212 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 196.0) internal successors, (3920), 20 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:12,212 INFO L175 Difference]: Start difference. First operand has 318 places, 848 transitions, 21444 flow. Second operand 19 states and 1662 transitions. [2023-11-17 16:01:12,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 1039 transitions, 26577 flow [2023-11-17 16:01:15,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1039 transitions, 26045 flow, removed 48 selfloop flow, removed 5 redundant places. [2023-11-17 16:01:15,521 INFO L231 Difference]: Finished difference. Result has 341 places, 924 transitions, 23556 flow [2023-11-17 16:01:15,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=20981, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23556, PETRI_PLACES=341, PETRI_TRANSITIONS=924} [2023-11-17 16:01:15,522 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 312 predicate places. [2023-11-17 16:01:15,522 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 924 transitions, 23556 flow [2023-11-17 16:01:15,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.57142857142857) internal successors, (1142), 14 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:15,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:15,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:15,529 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 16:01:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:15,727 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:15,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1939943426, now seen corresponding path program 5 times [2023-11-17 16:01:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696983525] [2023-11-17 16:01:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:15,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:15,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696983525] [2023-11-17 16:01:15,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696983525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:15,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848892157] [2023-11-17 16:01:15,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:01:15,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:15,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:15,815 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 16:01:15,832 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 16:01:15,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:01:15,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:15,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:01:15,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:15,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848892157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:16,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-17 16:01:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274470606] [2023-11-17 16:01:16,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:01:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:01:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:01:16,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:16,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 924 transitions, 23556 flow. Second operand has 12 states, 12 states have (on average 81.41666666666667) internal successors, (977), 12 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 16:01:16,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:16,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:16,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:20,362 INFO L124 PetriNetUnfolderBase]: 9340/14084 cut-off events. [2023-11-17 16:01:20,363 INFO L125 PetriNetUnfolderBase]: For 524835/524835 co-relation queries the response was YES. [2023-11-17 16:01:20,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148036 conditions, 14084 events. 9340/14084 cut-off events. For 524835/524835 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 88310 event pairs, 2757 based on Foata normal form. 16/14100 useless extension candidates. Maximal degree in co-relation 147361. Up to 13076 conditions per place. [2023-11-17 16:01:20,881 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 810 selfloop transitions, 146 changer transitions 0/956 dead transitions. [2023-11-17 16:01:20,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 956 transitions, 25818 flow [2023-11-17 16:01:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:01:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:01:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2023-11-17 16:01:20,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2023-11-17 16:01:20,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2023-11-17 16:01:20,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2023-11-17 16:01:20,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:20,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2023-11-17 16:01:20,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 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 16:01:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:20,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:20,995 INFO L175 Difference]: Start difference. First operand has 341 places, 924 transitions, 23556 flow. Second operand 7 states and 620 transitions. [2023-11-17 16:01:20,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 956 transitions, 25818 flow [2023-11-17 16:01:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 956 transitions, 25084 flow, removed 210 selfloop flow, removed 6 redundant places. [2023-11-17 16:01:25,004 INFO L231 Difference]: Finished difference. Result has 342 places, 927 transitions, 23192 flow [2023-11-17 16:01:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=22824, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23192, PETRI_PLACES=342, PETRI_TRANSITIONS=927} [2023-11-17 16:01:25,005 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 313 predicate places. [2023-11-17 16:01:25,006 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 927 transitions, 23192 flow [2023-11-17 16:01:25,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.41666666666667) internal successors, (977), 12 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 16:01:25,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:25,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:25,011 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 16:01:25,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:25,211 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:25,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash 190197932, now seen corresponding path program 9 times [2023-11-17 16:01:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:25,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538805252] [2023-11-17 16:01:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:25,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538805252] [2023-11-17 16:01:25,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538805252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582718374] [2023-11-17 16:01:25,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:01:25,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:25,306 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 16:01:25,325 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 16:01:25,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:01:25,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:25,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:01:25,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:25,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:25,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582718374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:25,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:25,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 16:01:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846205414] [2023-11-17 16:01:25,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:25,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:01:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:01:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:01:25,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:25,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 927 transitions, 23192 flow. Second operand has 13 states, 13 states have (on average 81.76923076923077) internal successors, (1063), 13 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:25,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:25,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:25,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:29,993 INFO L124 PetriNetUnfolderBase]: 9380/14148 cut-off events. [2023-11-17 16:01:29,994 INFO L125 PetriNetUnfolderBase]: For 512522/512522 co-relation queries the response was YES. [2023-11-17 16:01:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147569 conditions, 14148 events. 9380/14148 cut-off events. For 512522/512522 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 88877 event pairs, 2759 based on Foata normal form. 30/14178 useless extension candidates. Maximal degree in co-relation 146893. Up to 13158 conditions per place. [2023-11-17 16:01:30,263 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 817 selfloop transitions, 161 changer transitions 0/978 dead transitions. [2023-11-17 16:01:30,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 978 transitions, 25896 flow [2023-11-17 16:01:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:01:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:01:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 624 transitions. [2023-11-17 16:01:30,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45481049562682213 [2023-11-17 16:01:30,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 624 transitions. [2023-11-17 16:01:30,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 624 transitions. [2023-11-17 16:01:30,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:30,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 624 transitions. [2023-11-17 16:01:30,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:30,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:30,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:30,267 INFO L175 Difference]: Start difference. First operand has 342 places, 927 transitions, 23192 flow. Second operand 7 states and 624 transitions. [2023-11-17 16:01:30,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 978 transitions, 25896 flow [2023-11-17 16:01:33,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 978 transitions, 25594 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 16:01:33,874 INFO L231 Difference]: Finished difference. Result has 347 places, 936 transitions, 23527 flow [2023-11-17 16:01:33,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=22898, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23527, PETRI_PLACES=347, PETRI_TRANSITIONS=936} [2023-11-17 16:01:33,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 318 predicate places. [2023-11-17 16:01:33,875 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 936 transitions, 23527 flow [2023-11-17 16:01:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.76923076923077) internal successors, (1063), 13 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:33,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:33,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:33,880 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 16:01:34,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:34,080 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:34,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -490605604, now seen corresponding path program 10 times [2023-11-17 16:01:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:34,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393432494] [2023-11-17 16:01:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393432494] [2023-11-17 16:01:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393432494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:34,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:34,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:01:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700266968] [2023-11-17 16:01:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:34,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:01:34,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:01:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:01:34,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:34,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 936 transitions, 23527 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:34,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:34,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:34,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:38,491 INFO L124 PetriNetUnfolderBase]: 9372/14132 cut-off events. [2023-11-17 16:01:38,491 INFO L125 PetriNetUnfolderBase]: For 517644/517644 co-relation queries the response was YES. [2023-11-17 16:01:38,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147995 conditions, 14132 events. 9372/14132 cut-off events. For 517644/517644 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 88645 event pairs, 2765 based on Foata normal form. 12/14144 useless extension candidates. Maximal degree in co-relation 147316. Up to 13198 conditions per place. [2023-11-17 16:01:38,801 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 818 selfloop transitions, 158 changer transitions 0/976 dead transitions. [2023-11-17 16:01:38,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 976 transitions, 26036 flow [2023-11-17 16:01:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:01:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:01:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2023-11-17 16:01:38,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2023-11-17 16:01:38,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2023-11-17 16:01:38,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2023-11-17 16:01:38,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:38,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2023-11-17 16:01:38,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 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 16:01:38,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:38,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:38,804 INFO L175 Difference]: Start difference. First operand has 347 places, 936 transitions, 23527 flow. Second operand 7 states and 620 transitions. [2023-11-17 16:01:38,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 976 transitions, 26036 flow [2023-11-17 16:01:42,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 976 transitions, 25771 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-17 16:01:42,214 INFO L231 Difference]: Finished difference. Result has 350 places, 937 transitions, 23616 flow [2023-11-17 16:01:42,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=23265, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23616, PETRI_PLACES=350, PETRI_TRANSITIONS=937} [2023-11-17 16:01:42,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 321 predicate places. [2023-11-17 16:01:42,224 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 937 transitions, 23616 flow [2023-11-17 16:01:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:42,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:42,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:42,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-17 16:01:42,224 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1464479502, now seen corresponding path program 11 times [2023-11-17 16:01:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158854728] [2023-11-17 16:01:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158854728] [2023-11-17 16:01:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158854728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477359420] [2023-11-17 16:01:42,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:01:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:42,328 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 16:01:42,330 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 16:01:42,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:01:42,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:42,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:01:42,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:42,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:42,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477359420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:42,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:42,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-17 16:01:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696160687] [2023-11-17 16:01:42,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:42,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:01:42,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:01:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:01:42,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:42,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 937 transitions, 23616 flow. Second operand has 15 states, 15 states have (on average 81.06666666666666) internal successors, (1216), 15 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:42,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:42,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:42,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:47,752 INFO L124 PetriNetUnfolderBase]: 9986/15112 cut-off events. [2023-11-17 16:01:47,753 INFO L125 PetriNetUnfolderBase]: For 557964/557964 co-relation queries the response was YES. [2023-11-17 16:01:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157185 conditions, 15112 events. 9986/15112 cut-off events. For 557964/557964 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 96758 event pairs, 2210 based on Foata normal form. 90/15202 useless extension candidates. Maximal degree in co-relation 156480. Up to 12259 conditions per place. [2023-11-17 16:01:48,065 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 870 selfloop transitions, 385 changer transitions 0/1255 dead transitions. [2023-11-17 16:01:48,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1255 transitions, 32317 flow [2023-11-17 16:01:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:01:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:01:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1839 transitions. [2023-11-17 16:01:48,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467930029154519 [2023-11-17 16:01:48,067 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1839 transitions. [2023-11-17 16:01:48,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1839 transitions. [2023-11-17 16:01:48,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:48,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1839 transitions. [2023-11-17 16:01:48,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.57142857142857) internal successors, (1839), 21 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:48,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 196.0) internal successors, (4312), 22 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:48,071 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 196.0) internal successors, (4312), 22 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:48,072 INFO L175 Difference]: Start difference. First operand has 350 places, 937 transitions, 23616 flow. Second operand 21 states and 1839 transitions. [2023-11-17 16:01:48,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1255 transitions, 32317 flow [2023-11-17 16:01:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1255 transitions, 31963 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 16:01:51,851 INFO L231 Difference]: Finished difference. Result has 380 places, 1087 transitions, 28243 flow [2023-11-17 16:01:51,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=23294, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=28243, PETRI_PLACES=380, PETRI_TRANSITIONS=1087} [2023-11-17 16:01:51,853 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 351 predicate places. [2023-11-17 16:01:51,854 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 1087 transitions, 28243 flow [2023-11-17 16:01:51,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 81.06666666666666) internal successors, (1216), 15 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:51,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:51,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:52,058 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,SelfDestructingSolverStorable38 [2023-11-17 16:01:52,059 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:52,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -81460074, now seen corresponding path program 12 times [2023-11-17 16:01:52,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:52,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236436460] [2023-11-17 16:01:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236436460] [2023-11-17 16:01:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236436460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:52,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:52,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:01:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009179695] [2023-11-17 16:01:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:01:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:01:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:01:52,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:01:52,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1087 transitions, 28243 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:52,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:52,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:01:52,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:57,203 INFO L124 PetriNetUnfolderBase]: 9985/15115 cut-off events. [2023-11-17 16:01:57,203 INFO L125 PetriNetUnfolderBase]: For 690402/690402 co-relation queries the response was YES. [2023-11-17 16:01:57,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170144 conditions, 15115 events. 9985/15115 cut-off events. For 690402/690402 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 96562 event pairs, 2862 based on Foata normal form. 4/15119 useless extension candidates. Maximal degree in co-relation 169408. Up to 14133 conditions per place. [2023-11-17 16:01:57,435 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 948 selfloop transitions, 155 changer transitions 4/1107 dead transitions. [2023-11-17 16:01:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1107 transitions, 30709 flow [2023-11-17 16:01:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:01:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:01:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-11-17 16:01:57,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467930029154519 [2023-11-17 16:01:57,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-11-17 16:01:57,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-11-17 16:01:57,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:57,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-11-17 16:01:57,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,438 INFO L175 Difference]: Start difference. First operand has 380 places, 1087 transitions, 28243 flow. Second operand 7 states and 613 transitions. [2023-11-17 16:01:57,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1107 transitions, 30709 flow [2023-11-17 16:02:02,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1107 transitions, 29829 flow, removed 270 selfloop flow, removed 5 redundant places. [2023-11-17 16:02:02,310 INFO L231 Difference]: Finished difference. Result has 382 places, 1086 transitions, 27648 flow [2023-11-17 16:02:02,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=27363, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27648, PETRI_PLACES=382, PETRI_TRANSITIONS=1086} [2023-11-17 16:02:02,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 353 predicate places. [2023-11-17 16:02:02,311 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1086 transitions, 27648 flow [2023-11-17 16:02:02,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:02,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-17 16:02:02,311 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:02,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash -324996724, now seen corresponding path program 13 times [2023-11-17 16:02:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279203850] [2023-11-17 16:02:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:02,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279203850] [2023-11-17 16:02:02,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279203850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:02,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:02,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971465714] [2023-11-17 16:02:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:02,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:02,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:02,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1086 transitions, 27648 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:02,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:02,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:07,467 INFO L124 PetriNetUnfolderBase]: 9983/15113 cut-off events. [2023-11-17 16:02:07,467 INFO L125 PetriNetUnfolderBase]: For 670730/670730 co-relation queries the response was YES. [2023-11-17 16:02:07,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167961 conditions, 15113 events. 9983/15113 cut-off events. For 670730/670730 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 96586 event pairs, 2857 based on Foata normal form. 4/15117 useless extension candidates. Maximal degree in co-relation 167520. Up to 14124 conditions per place. [2023-11-17 16:02:07,710 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 947 selfloop transitions, 157 changer transitions 4/1108 dead transitions. [2023-11-17 16:02:07,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1108 transitions, 30121 flow [2023-11-17 16:02:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2023-11-17 16:02:07,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44825072886297374 [2023-11-17 16:02:07,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2023-11-17 16:02:07,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2023-11-17 16:02:07,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:07,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2023-11-17 16:02:07,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:07,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:07,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:07,713 INFO L175 Difference]: Start difference. First operand has 382 places, 1086 transitions, 27648 flow. Second operand 7 states and 615 transitions. [2023-11-17 16:02:07,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1108 transitions, 30121 flow [2023-11-17 16:02:12,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1108 transitions, 29833 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 16:02:12,473 INFO L231 Difference]: Finished difference. Result has 383 places, 1085 transitions, 27671 flow [2023-11-17 16:02:12,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=27360, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27671, PETRI_PLACES=383, PETRI_TRANSITIONS=1085} [2023-11-17 16:02:12,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 354 predicate places. [2023-11-17 16:02:12,474 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 1085 transitions, 27671 flow [2023-11-17 16:02:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:12,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:12,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-17 16:02:12,474 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:12,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash -109029910, now seen corresponding path program 14 times [2023-11-17 16:02:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299021254] [2023-11-17 16:02:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299021254] [2023-11-17 16:02:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299021254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:12,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:12,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76214345] [2023-11-17 16:02:12,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:12,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:12,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:12,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:12,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:12,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:12,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 1085 transitions, 27671 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:12,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:12,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:12,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:17,298 INFO L124 PetriNetUnfolderBase]: 10069/15241 cut-off events. [2023-11-17 16:02:17,298 INFO L125 PetriNetUnfolderBase]: For 680888/680888 co-relation queries the response was YES. [2023-11-17 16:02:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169303 conditions, 15241 events. 10069/15241 cut-off events. For 680888/680888 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 97486 event pairs, 2866 based on Foata normal form. 34/15275 useless extension candidates. Maximal degree in co-relation 168862. Up to 14173 conditions per place. [2023-11-17 16:02:17,536 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 964 selfloop transitions, 174 changer transitions 0/1138 dead transitions. [2023-11-17 16:02:17,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1138 transitions, 30933 flow [2023-11-17 16:02:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2023-11-17 16:02:17,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45262390670553937 [2023-11-17 16:02:17,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2023-11-17 16:02:17,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2023-11-17 16:02:17,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:17,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2023-11-17 16:02:17,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,538 INFO L175 Difference]: Start difference. First operand has 383 places, 1085 transitions, 27671 flow. Second operand 7 states and 621 transitions. [2023-11-17 16:02:17,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1138 transitions, 30933 flow [2023-11-17 16:02:22,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1138 transitions, 30605 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 16:02:22,370 INFO L231 Difference]: Finished difference. Result has 384 places, 1104 transitions, 28256 flow [2023-11-17 16:02:22,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=27355, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28256, PETRI_PLACES=384, PETRI_TRANSITIONS=1104} [2023-11-17 16:02:22,371 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 355 predicate places. [2023-11-17 16:02:22,371 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1104 transitions, 28256 flow [2023-11-17 16:02:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:22,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-17 16:02:22,372 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:22,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1819548856, now seen corresponding path program 15 times [2023-11-17 16:02:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901975650] [2023-11-17 16:02:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901975650] [2023-11-17 16:02:22,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901975650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:22,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:22,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916901401] [2023-11-17 16:02:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:22,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:22,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:22,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:22,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1104 transitions, 28256 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:22,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:27,291 INFO L124 PetriNetUnfolderBase]: 10081/15261 cut-off events. [2023-11-17 16:02:27,291 INFO L125 PetriNetUnfolderBase]: For 693312/693312 co-relation queries the response was YES. [2023-11-17 16:02:27,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170540 conditions, 15261 events. 10081/15261 cut-off events. For 693312/693312 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 97623 event pairs, 2890 based on Foata normal form. 8/15269 useless extension candidates. Maximal degree in co-relation 169802. Up to 14253 conditions per place. [2023-11-17 16:02:27,549 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 965 selfloop transitions, 164 changer transitions 0/1129 dead transitions. [2023-11-17 16:02:27,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1129 transitions, 30972 flow [2023-11-17 16:02:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-11-17 16:02:27,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467930029154519 [2023-11-17 16:02:27,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-11-17 16:02:27,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-11-17 16:02:27,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:27,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-11-17 16:02:27,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,552 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,552 INFO L175 Difference]: Start difference. First operand has 384 places, 1104 transitions, 28256 flow. Second operand 7 states and 613 transitions. [2023-11-17 16:02:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1129 transitions, 30972 flow [2023-11-17 16:02:32,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1129 transitions, 30733 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-17 16:02:32,453 INFO L231 Difference]: Finished difference. Result has 387 places, 1107 transitions, 28464 flow [2023-11-17 16:02:32,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=28020, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=943, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28464, PETRI_PLACES=387, PETRI_TRANSITIONS=1107} [2023-11-17 16:02:32,454 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 358 predicate places. [2023-11-17 16:02:32,454 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 1107 transitions, 28464 flow [2023-11-17 16:02:32,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:32,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:32,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:32,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-17 16:02:32,454 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:32,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1394601646, now seen corresponding path program 16 times [2023-11-17 16:02:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:32,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511845734] [2023-11-17 16:02:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:32,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:32,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511845734] [2023-11-17 16:02:32,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511845734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:32,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352477977] [2023-11-17 16:02:32,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:32,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:32,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:32,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:32,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1107 transitions, 28464 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:32,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:32,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:37,449 INFO L124 PetriNetUnfolderBase]: 10093/15281 cut-off events. [2023-11-17 16:02:37,449 INFO L125 PetriNetUnfolderBase]: For 706728/706728 co-relation queries the response was YES. [2023-11-17 16:02:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170768 conditions, 15281 events. 10093/15281 cut-off events. For 706728/706728 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 97777 event pairs, 2862 based on Foata normal form. 8/15289 useless extension candidates. Maximal degree in co-relation 170030. Up to 14261 conditions per place. [2023-11-17 16:02:37,823 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 963 selfloop transitions, 173 changer transitions 0/1136 dead transitions. [2023-11-17 16:02:37,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1136 transitions, 31277 flow [2023-11-17 16:02:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2023-11-17 16:02:37,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44970845481049565 [2023-11-17 16:02:37,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2023-11-17 16:02:37,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2023-11-17 16:02:37,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:37,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2023-11-17 16:02:37,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:37,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:37,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:37,847 INFO L175 Difference]: Start difference. First operand has 387 places, 1107 transitions, 28464 flow. Second operand 7 states and 617 transitions. [2023-11-17 16:02:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1136 transitions, 31277 flow [2023-11-17 16:02:42,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1136 transitions, 31094 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:02:42,957 INFO L231 Difference]: Finished difference. Result has 389 places, 1110 transitions, 28749 flow [2023-11-17 16:02:42,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=28284, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28749, PETRI_PLACES=389, PETRI_TRANSITIONS=1110} [2023-11-17 16:02:42,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-11-17 16:02:42,958 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1110 transitions, 28749 flow [2023-11-17 16:02:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:42,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:42,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-17 16:02:42,959 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:42,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2049186774, now seen corresponding path program 6 times [2023-11-17 16:02:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284868083] [2023-11-17 16:02:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284868083] [2023-11-17 16:02:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284868083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887824183] [2023-11-17 16:02:43,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:02:43,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:43,078 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 16:02:43,080 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 16:02:43,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:02:43,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:43,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:02:43,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:43,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887824183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:43,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:43,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-11-17 16:02:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933659655] [2023-11-17 16:02:43,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:02:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:02:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:02:43,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:43,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1110 transitions, 28749 flow. Second operand has 16 states, 16 states have (on average 81.3125) internal successors, (1301), 16 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:43,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:43,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:43,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:49,032 INFO L124 PetriNetUnfolderBase]: 10282/15552 cut-off events. [2023-11-17 16:02:49,032 INFO L125 PetriNetUnfolderBase]: For 737087/737087 co-relation queries the response was YES. [2023-11-17 16:02:49,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174450 conditions, 15552 events. 10282/15552 cut-off events. For 737087/737087 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 99550 event pairs, 2850 based on Foata normal form. 50/15602 useless extension candidates. Maximal degree in co-relation 173712. Up to 14187 conditions per place. [2023-11-17 16:02:49,348 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 988 selfloop transitions, 257 changer transitions 0/1245 dead transitions. [2023-11-17 16:02:49,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 1245 transitions, 33850 flow [2023-11-17 16:02:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 16:02:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 16:02:49,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1575 transitions. [2023-11-17 16:02:49,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-11-17 16:02:49,350 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1575 transitions. [2023-11-17 16:02:49,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1575 transitions. [2023-11-17 16:02:49,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:49,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1575 transitions. [2023-11-17 16:02:49,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 87.5) internal successors, (1575), 18 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 196.0) internal successors, (3724), 19 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,353 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 196.0) internal successors, (3724), 19 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,353 INFO L175 Difference]: Start difference. First operand has 389 places, 1110 transitions, 28749 flow. Second operand 18 states and 1575 transitions. [2023-11-17 16:02:49,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 1245 transitions, 33850 flow [2023-11-17 16:02:54,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1245 transitions, 33420 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 16:02:54,539 INFO L231 Difference]: Finished difference. Result has 413 places, 1171 transitions, 30699 flow [2023-11-17 16:02:54,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=28291, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=30699, PETRI_PLACES=413, PETRI_TRANSITIONS=1171} [2023-11-17 16:02:54,541 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 384 predicate places. [2023-11-17 16:02:54,541 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 1171 transitions, 30699 flow [2023-11-17 16:02:54,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 81.3125) internal successors, (1301), 16 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:54,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:54,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:54,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-17 16:02:54,745 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,SelfDestructingSolverStorable44 [2023-11-17 16:02:54,745 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:54,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -848633512, now seen corresponding path program 23 times [2023-11-17 16:02:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083464664] [2023-11-17 16:02:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083464664] [2023-11-17 16:02:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083464664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289494523] [2023-11-17 16:02:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:54,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:02:54,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 1171 transitions, 30699 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:54,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:54,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:02:54,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:00,572 INFO L124 PetriNetUnfolderBase]: 10302/15588 cut-off events. [2023-11-17 16:03:00,572 INFO L125 PetriNetUnfolderBase]: For 894310/894310 co-relation queries the response was YES. [2023-11-17 16:03:00,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182607 conditions, 15588 events. 10302/15588 cut-off events. For 894310/894310 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 99922 event pairs, 2919 based on Foata normal form. 16/15604 useless extension candidates. Maximal degree in co-relation 181913. Up to 14488 conditions per place. [2023-11-17 16:03:01,080 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 1012 selfloop transitions, 188 changer transitions 0/1200 dead transitions. [2023-11-17 16:03:01,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1200 transitions, 33558 flow [2023-11-17 16:03:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:03:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:03:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2023-11-17 16:03:01,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44970845481049565 [2023-11-17 16:03:01,082 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2023-11-17 16:03:01,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2023-11-17 16:03:01,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:01,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2023-11-17 16:03:01,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:01,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:01,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:01,083 INFO L175 Difference]: Start difference. First operand has 413 places, 1171 transitions, 30699 flow. Second operand 7 states and 617 transitions. [2023-11-17 16:03:01,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1200 transitions, 33558 flow [2023-11-17 16:03:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1200 transitions, 33021 flow, removed 265 selfloop flow, removed 1 redundant places. [2023-11-17 16:03:07,128 INFO L231 Difference]: Finished difference. Result has 419 places, 1174 transitions, 30628 flow [2023-11-17 16:03:07,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=30162, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=983, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30628, PETRI_PLACES=419, PETRI_TRANSITIONS=1174} [2023-11-17 16:03:07,129 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 390 predicate places. [2023-11-17 16:03:07,129 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 1174 transitions, 30628 flow [2023-11-17 16:03:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:07,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:07,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:07,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-17 16:03:07,130 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:07,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash -197721190, now seen corresponding path program 24 times [2023-11-17 16:03:07,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:07,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758882485] [2023-11-17 16:03:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:07,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758882485] [2023-11-17 16:03:07,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758882485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:07,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:03:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:03:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379341202] [2023-11-17 16:03:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:03:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:03:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:03:07,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:03:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1174 transitions, 30628 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:03:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:13,107 INFO L124 PetriNetUnfolderBase]: 10556/16176 cut-off events. [2023-11-17 16:03:13,107 INFO L125 PetriNetUnfolderBase]: For 919533/919533 co-relation queries the response was YES. [2023-11-17 16:03:13,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188074 conditions, 16176 events. 10556/16176 cut-off events. For 919533/919533 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 106628 event pairs, 2721 based on Foata normal form. 32/16208 useless extension candidates. Maximal degree in co-relation 187474. Up to 12994 conditions per place. [2023-11-17 16:03:13,454 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 1039 selfloop transitions, 308 changer transitions 0/1347 dead transitions. [2023-11-17 16:03:13,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1347 transitions, 36847 flow [2023-11-17 16:03:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:03:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:03:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2023-11-17 16:03:13,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45699708454810495 [2023-11-17 16:03:13,455 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2023-11-17 16:03:13,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2023-11-17 16:03:13,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:13,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2023-11-17 16:03:13,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:13,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:13,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:13,457 INFO L175 Difference]: Start difference. First operand has 419 places, 1174 transitions, 30628 flow. Second operand 7 states and 627 transitions. [2023-11-17 16:03:13,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1347 transitions, 36847 flow [2023-11-17 16:03:19,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1347 transitions, 36467 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 16:03:19,539 INFO L231 Difference]: Finished difference. Result has 422 places, 1193 transitions, 31626 flow [2023-11-17 16:03:19,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=30248, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=866, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31626, PETRI_PLACES=422, PETRI_TRANSITIONS=1193} [2023-11-17 16:03:19,540 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 393 predicate places. [2023-11-17 16:03:19,540 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1193 transitions, 31626 flow [2023-11-17 16:03:19,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:19,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:19,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-17 16:03:19,540 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:19,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:19,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1487324234, now seen corresponding path program 17 times [2023-11-17 16:03:19,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:19,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515175606] [2023-11-17 16:03:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:19,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:19,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515175606] [2023-11-17 16:03:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515175606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:19,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:03:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:03:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150844623] [2023-11-17 16:03:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:19,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:03:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:03:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:03:19,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:03:19,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1193 transitions, 31626 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:19,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:19,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:03:19,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:25,552 INFO L124 PetriNetUnfolderBase]: 10806/16675 cut-off events. [2023-11-17 16:03:25,552 INFO L125 PetriNetUnfolderBase]: For 978531/978531 co-relation queries the response was YES. [2023-11-17 16:03:25,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194804 conditions, 16675 events. 10806/16675 cut-off events. For 978531/978531 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 111905 event pairs, 2979 based on Foata normal form. 72/16747 useless extension candidates. Maximal degree in co-relation 194202. Up to 14658 conditions per place. [2023-11-17 16:03:25,832 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 988 selfloop transitions, 270 changer transitions 4/1262 dead transitions. [2023-11-17 16:03:25,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 1262 transitions, 35322 flow [2023-11-17 16:03:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:03:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:03:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2023-11-17 16:03:25,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518950437317784 [2023-11-17 16:03:25,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2023-11-17 16:03:25,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2023-11-17 16:03:25,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:25,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2023-11-17 16:03:25,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 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 16:03:25,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:25,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:25,835 INFO L175 Difference]: Start difference. First operand has 422 places, 1193 transitions, 31626 flow. Second operand 7 states and 620 transitions. [2023-11-17 16:03:25,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 1262 transitions, 35322 flow [2023-11-17 16:03:32,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1262 transitions, 34737 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 16:03:32,255 INFO L231 Difference]: Finished difference. Result has 427 places, 1211 transitions, 32161 flow [2023-11-17 16:03:32,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=31041, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32161, PETRI_PLACES=427, PETRI_TRANSITIONS=1211} [2023-11-17 16:03:32,256 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 398 predicate places. [2023-11-17 16:03:32,257 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1211 transitions, 32161 flow [2023-11-17 16:03:32,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:32,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:32,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:32,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-17 16:03:32,257 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:32,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1554923898, now seen corresponding path program 18 times [2023-11-17 16:03:32,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:32,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506248118] [2023-11-17 16:03:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:32,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:32,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506248118] [2023-11-17 16:03:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506248118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:32,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:03:32,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:03:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078594090] [2023-11-17 16:03:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:03:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:03:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:03:32,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:03:32,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1211 transitions, 32161 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:32,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:32,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:03:32,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:38,580 INFO L124 PetriNetUnfolderBase]: 10812/16760 cut-off events. [2023-11-17 16:03:38,581 INFO L125 PetriNetUnfolderBase]: For 1011744/1011744 co-relation queries the response was YES. [2023-11-17 16:03:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197368 conditions, 16760 events. 10812/16760 cut-off events. For 1011744/1011744 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 113515 event pairs, 3192 based on Foata normal form. 32/16792 useless extension candidates. Maximal degree in co-relation 196757. Up to 15554 conditions per place. [2023-11-17 16:03:38,880 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 1035 selfloop transitions, 210 changer transitions 8/1253 dead transitions. [2023-11-17 16:03:38,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1253 transitions, 35287 flow [2023-11-17 16:03:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:03:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:03:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-11-17 16:03:38,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-11-17 16:03:38,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-11-17 16:03:38,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-11-17 16:03:38,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:38,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-11-17 16:03:38,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:38,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:38,883 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:38,883 INFO L175 Difference]: Start difference. First operand has 427 places, 1211 transitions, 32161 flow. Second operand 7 states and 616 transitions. [2023-11-17 16:03:38,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1253 transitions, 35287 flow [2023-11-17 16:03:45,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1253 transitions, 34711 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-11-17 16:03:45,684 INFO L231 Difference]: Finished difference. Result has 430 places, 1207 transitions, 31894 flow [2023-11-17 16:03:45,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=31591, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31894, PETRI_PLACES=430, PETRI_TRANSITIONS=1207} [2023-11-17 16:03:45,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 401 predicate places. [2023-11-17 16:03:45,686 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1207 transitions, 31894 flow [2023-11-17 16:03:45,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:45,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:45,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:45,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-17 16:03:45,686 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:45,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -833002190, now seen corresponding path program 19 times [2023-11-17 16:03:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:45,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257528786] [2023-11-17 16:03:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:45,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257528786] [2023-11-17 16:03:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257528786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295315780] [2023-11-17 16:03:45,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:03:45,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:45,770 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 16:03:45,773 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 16:03:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:45,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:03:45,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:45,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295315780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:46,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-17 16:03:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552644365] [2023-11-17 16:03:46,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:46,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:03:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:03:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:03:46,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 196 [2023-11-17 16:03:46,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1207 transitions, 31894 flow. Second operand has 15 states, 15 states have (on average 81.26666666666667) internal successors, (1219), 15 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:46,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:46,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 196 [2023-11-17 16:03:46,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand