/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:00:28,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:00:28,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:00:28,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:00:28,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:00:28,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:00:28,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:00:28,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:00:28,581 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:00:28,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:00:28,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:00:28,582 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:00:28,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:00:28,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:00:28,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:00:28,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:00:28,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:00:28,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:00:28,585 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:00:28,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:00:28,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:00:28,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:00:28,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:00:28,587 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:00:28,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:00:28,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:00:28,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:00:28,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:00:28,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:00:28,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:00:28,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:00:28,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:00:28,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:00:28,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:00:28,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:00:28,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:00:28,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:00:28,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:00:28,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-11-17 12:00:30,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:00:30,324 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:00:30,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-11-17 12:00:30,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725b68c36/2286f282e9694ec5b236e62e00b830b8/FLAGf77b5c8ad [2023-11-17 12:00:30,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725b68c36/2286f282e9694ec5b236e62e00b830b8 [2023-11-17 12:00:30,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:00:30,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:00:30,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:00:30,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:00:30,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:00:30,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc9d6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30, skipping insertion in model container [2023-11-17 12:00:30,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:00:30,613 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-17 12:00:30,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:00:30,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:00:30,682 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-17 12:00:30,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:00:30,698 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:00:30,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30 WrapperNode [2023-11-17 12:00:30,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:00:30,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:00:30,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:00:30,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:00:30,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,764 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2023-11-17 12:00:30,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:00:30,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:00:30,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:00:30,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:00:30,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:00:30,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:00:30,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:00:30,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:00:30,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (1/1) ... [2023-11-17 12:00:30,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:00:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:00:30,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:00:30,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:00:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:00:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:00:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:00:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:00:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:00:30,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:00:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:00:30,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:00:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:00:30,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:00:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:00:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:00:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:00:30,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:00:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:00:30,887 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:00:30,984 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:00:30,986 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:00:31,462 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:00:31,746 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:00:31,747 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 12:00:31,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:00:31 BoogieIcfgContainer [2023-11-17 12:00:31,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:00:31,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:00:31,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:00:31,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:00:31,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:00:30" (1/3) ... [2023-11-17 12:00:31,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df5a480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:00:31, skipping insertion in model container [2023-11-17 12:00:31,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:00:30" (2/3) ... [2023-11-17 12:00:31,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df5a480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:00:31, skipping insertion in model container [2023-11-17 12:00:31,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:00:31" (3/3) ... [2023-11-17 12:00:31,756 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-17 12:00:31,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:00:31,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:00:31,773 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:00:31,819 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:00:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2023-11-17 12:00:31,879 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2023-11-17 12:00:31,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:00:31,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-17 12:00:31,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2023-11-17 12:00:31,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2023-11-17 12:00:31,892 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:00:31,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 47 transitions, 112 flow [2023-11-17 12:00:31,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 47 transitions, 112 flow [2023-11-17 12:00:31,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2023-11-17 12:00:31,921 INFO L124 PetriNetUnfolderBase]: 12/47 cut-off events. [2023-11-17 12:00:31,921 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:00:31,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 12/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-17 12:00:31,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 756 [2023-11-17 12:00:33,548 INFO L134 LiptonReduction]: Checked pairs total: 1256 [2023-11-17 12:00:33,549 INFO L136 LiptonReduction]: Total number of compositions: 26 [2023-11-17 12:00:33,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:00:33,570 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;@2a2a97c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:00:33,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:00:33,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:00:33,582 INFO L124 PetriNetUnfolderBase]: 11/34 cut-off events. [2023-11-17 12:00:33,582 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:00:33,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:33,583 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 12:00:33,583 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 12:00:33,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2034268614, now seen corresponding path program 1 times [2023-11-17 12:00:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032466281] [2023-11-17 12:00:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:34,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:34,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032466281] [2023-11-17 12:00:34,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032466281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:34,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:34,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937612571] [2023-11-17 12:00:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:34,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:34,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:34,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:34,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:34,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:34,728 INFO L124 PetriNetUnfolderBase]: 778/1061 cut-off events. [2023-11-17 12:00:34,728 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-17 12:00:34,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1061 events. 778/1061 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3256 event pairs, 173 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 1652. Up to 501 conditions per place. [2023-11-17 12:00:34,738 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 70 selfloop transitions, 10 changer transitions 1/81 dead transitions. [2023-11-17 12:00:34,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 81 transitions, 369 flow [2023-11-17 12:00:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 12:00:34,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2023-11-17 12:00:34,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 12:00:34,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 12:00:34,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:34,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 12:00:34,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,761 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 88 flow. Second operand 5 states and 102 transitions. [2023-11-17 12:00:34,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 81 transitions, 369 flow [2023-11-17 12:00:34,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 81 transitions, 339 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:00:34,769 INFO L231 Difference]: Finished difference. Result has 35 places, 42 transitions, 137 flow [2023-11-17 12:00:34,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=35, PETRI_TRANSITIONS=42} [2023-11-17 12:00:34,774 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-17 12:00:34,774 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 42 transitions, 137 flow [2023-11-17 12:00:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:34,775 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 12:00:34,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:00:34,775 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 12:00:34,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2128623946, now seen corresponding path program 2 times [2023-11-17 12:00:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679594684] [2023-11-17 12:00:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679594684] [2023-11-17 12:00:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679594684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265090633] [2023-11-17 12:00:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:34,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:34,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:34,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:34,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:34,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:34,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:35,362 INFO L124 PetriNetUnfolderBase]: 972/1384 cut-off events. [2023-11-17 12:00:35,363 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-11-17 12:00:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 1384 events. 972/1384 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4985 event pairs, 361 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 2789. Up to 823 conditions per place. [2023-11-17 12:00:35,372 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 77 selfloop transitions, 6 changer transitions 2/85 dead transitions. [2023-11-17 12:00:35,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 85 transitions, 441 flow [2023-11-17 12:00:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2023-11-17 12:00:35,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2545454545454545 [2023-11-17 12:00:35,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 98 transitions. [2023-11-17 12:00:35,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 98 transitions. [2023-11-17 12:00:35,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:35,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 98 transitions. [2023-11-17 12:00:35,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,378 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 137 flow. Second operand 5 states and 98 transitions. [2023-11-17 12:00:35,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 85 transitions, 441 flow [2023-11-17 12:00:35,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 85 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:35,383 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 176 flow [2023-11-17 12:00:35,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-11-17 12:00:35,384 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-17 12:00:35,384 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 176 flow [2023-11-17 12:00:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:35,385 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 12:00:35,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:00:35,385 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 12:00:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash 990057220, now seen corresponding path program 3 times [2023-11-17 12:00:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259661923] [2023-11-17 12:00:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259661923] [2023-11-17 12:00:35,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259661923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:35,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980042701] [2023-11-17 12:00:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:35,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:35,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:35,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:35,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:35,936 INFO L124 PetriNetUnfolderBase]: 1089/1597 cut-off events. [2023-11-17 12:00:35,936 INFO L125 PetriNetUnfolderBase]: For 1197/1197 co-relation queries the response was YES. [2023-11-17 12:00:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 1597 events. 1089/1597 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6311 event pairs, 489 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 3400. Up to 1215 conditions per place. [2023-11-17 12:00:35,948 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 78 selfloop transitions, 7 changer transitions 2/87 dead transitions. [2023-11-17 12:00:35,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 87 transitions, 493 flow [2023-11-17 12:00:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2023-11-17 12:00:35,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24935064935064935 [2023-11-17 12:00:35,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 96 transitions. [2023-11-17 12:00:35,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 96 transitions. [2023-11-17 12:00:35,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:35,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 96 transitions. [2023-11-17 12:00:35,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,953 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,953 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 176 flow. Second operand 5 states and 96 transitions. [2023-11-17 12:00:35,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 87 transitions, 493 flow [2023-11-17 12:00:35,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 483 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:35,960 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 235 flow [2023-11-17 12:00:35,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-17 12:00:35,961 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-17 12:00:35,961 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 235 flow [2023-11-17 12:00:35,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:35,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:35,961 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 12:00:35,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:00:35,962 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 12:00:35,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1729267244, now seen corresponding path program 4 times [2023-11-17 12:00:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870625921] [2023-11-17 12:00:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:36,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:36,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870625921] [2023-11-17 12:00:36,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870625921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:36,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:36,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161616232] [2023-11-17 12:00:36,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:36,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:36,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:36,543 INFO L124 PetriNetUnfolderBase]: 1128/1644 cut-off events. [2023-11-17 12:00:36,543 INFO L125 PetriNetUnfolderBase]: For 2019/2019 co-relation queries the response was YES. [2023-11-17 12:00:36,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4884 conditions, 1644 events. 1128/1644 cut-off events. For 2019/2019 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6469 event pairs, 447 based on Foata normal form. 1/1376 useless extension candidates. Maximal degree in co-relation 3774. Up to 965 conditions per place. [2023-11-17 12:00:36,557 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 78 selfloop transitions, 16 changer transitions 1/95 dead transitions. [2023-11-17 12:00:36,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 95 transitions, 585 flow [2023-11-17 12:00:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-17 12:00:36,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2701298701298701 [2023-11-17 12:00:36,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-17 12:00:36,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-17 12:00:36,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:36,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-17 12:00:36,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,564 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,564 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 235 flow. Second operand 5 states and 104 transitions. [2023-11-17 12:00:36,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 95 transitions, 585 flow [2023-11-17 12:00:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 571 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:36,579 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 356 flow [2023-11-17 12:00:36,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-17 12:00:36,581 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-11-17 12:00:36,581 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 356 flow [2023-11-17 12:00:36,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:36,582 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 12:00:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:00:36,582 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 12:00:36,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 116316540, now seen corresponding path program 5 times [2023-11-17 12:00:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006169632] [2023-11-17 12:00:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:36,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006169632] [2023-11-17 12:00:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006169632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:36,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:36,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241593820] [2023-11-17 12:00:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:36,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:36,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:36,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:36,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:36,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:36,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:37,174 INFO L124 PetriNetUnfolderBase]: 1198/1761 cut-off events. [2023-11-17 12:00:37,174 INFO L125 PetriNetUnfolderBase]: For 3588/3588 co-relation queries the response was YES. [2023-11-17 12:00:37,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5883 conditions, 1761 events. 1198/1761 cut-off events. For 3588/3588 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7225 event pairs, 473 based on Foata normal form. 1/1477 useless extension candidates. Maximal degree in co-relation 4508. Up to 1275 conditions per place. [2023-11-17 12:00:37,188 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 88 selfloop transitions, 17 changer transitions 1/106 dead transitions. [2023-11-17 12:00:37,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 106 transitions, 753 flow [2023-11-17 12:00:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 12:00:37,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2023-11-17 12:00:37,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:37,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,192 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 356 flow. Second operand 5 states and 102 transitions. [2023-11-17 12:00:37,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 106 transitions, 753 flow [2023-11-17 12:00:37,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 106 transitions, 713 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-17 12:00:37,206 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 473 flow [2023-11-17 12:00:37,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2023-11-17 12:00:37,207 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2023-11-17 12:00:37,207 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 473 flow [2023-11-17 12:00:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:37,207 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 12:00:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:00:37,208 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 12:00:37,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 821043014, now seen corresponding path program 6 times [2023-11-17 12:00:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591592430] [2023-11-17 12:00:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:37,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591592430] [2023-11-17 12:00:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591592430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:37,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061454505] [2023-11-17 12:00:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:37,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:37,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:37,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:37,770 INFO L124 PetriNetUnfolderBase]: 1218/1788 cut-off events. [2023-11-17 12:00:37,770 INFO L125 PetriNetUnfolderBase]: For 4266/4266 co-relation queries the response was YES. [2023-11-17 12:00:37,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 1788 events. 1218/1788 cut-off events. For 4266/4266 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7374 event pairs, 279 based on Foata normal form. 1/1560 useless extension candidates. Maximal degree in co-relation 6020. Up to 845 conditions per place. [2023-11-17 12:00:37,784 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 82 selfloop transitions, 30 changer transitions 1/113 dead transitions. [2023-11-17 12:00:37,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 879 flow [2023-11-17 12:00:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 12:00:37,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2023-11-17 12:00:37,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:37,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 12:00:37,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,788 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 473 flow. Second operand 5 states and 102 transitions. [2023-11-17 12:00:37,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 879 flow [2023-11-17 12:00:37,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 113 transitions, 874 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:37,814 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 636 flow [2023-11-17 12:00:37,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-11-17 12:00:37,815 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-11-17 12:00:37,816 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 636 flow [2023-11-17 12:00:37,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:37,816 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 12:00:37,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:00:37,816 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 12:00:37,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -360958526, now seen corresponding path program 1 times [2023-11-17 12:00:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649761624] [2023-11-17 12:00:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:37,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:37,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649761624] [2023-11-17 12:00:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649761624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:37,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333487825] [2023-11-17 12:00:37,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:37,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:00:37,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:00:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:00:37,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:37,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:37,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:37,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:37,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:38,497 INFO L124 PetriNetUnfolderBase]: 2193/3130 cut-off events. [2023-11-17 12:00:38,497 INFO L125 PetriNetUnfolderBase]: For 11313/11313 co-relation queries the response was YES. [2023-11-17 12:00:38,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12332 conditions, 3130 events. 2193/3130 cut-off events. For 11313/11313 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13671 event pairs, 676 based on Foata normal form. 5/2711 useless extension candidates. Maximal degree in co-relation 11838. Up to 1085 conditions per place. [2023-11-17 12:00:38,523 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 114 selfloop transitions, 25 changer transitions 26/165 dead transitions. [2023-11-17 12:00:38,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 165 transitions, 1605 flow [2023-11-17 12:00:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:00:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:00:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2023-11-17 12:00:38,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23562152133580705 [2023-11-17 12:00:38,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 127 transitions. [2023-11-17 12:00:38,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 127 transitions. [2023-11-17 12:00:38,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:38,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 127 transitions. [2023-11-17 12:00:38,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:38,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:00:38,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:00:38,528 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 636 flow. Second operand 7 states and 127 transitions. [2023-11-17 12:00:38,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 165 transitions, 1605 flow [2023-11-17 12:00:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 165 transitions, 1543 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:38,571 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 765 flow [2023-11-17 12:00:38,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2023-11-17 12:00:38,572 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 40 predicate places. [2023-11-17 12:00:38,573 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 765 flow [2023-11-17 12:00:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:38,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:38,573 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 12:00:38,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:00:38,576 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 12:00:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2001873981, now seen corresponding path program 1 times [2023-11-17 12:00:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:38,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583969335] [2023-11-17 12:00:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583969335] [2023-11-17 12:00:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583969335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530337099] [2023-11-17 12:00:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:38,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 765 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:38,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:38,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:38,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:39,250 INFO L124 PetriNetUnfolderBase]: 2040/2941 cut-off events. [2023-11-17 12:00:39,250 INFO L125 PetriNetUnfolderBase]: For 10143/10143 co-relation queries the response was YES. [2023-11-17 12:00:39,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11662 conditions, 2941 events. 2040/2941 cut-off events. For 10143/10143 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12778 event pairs, 517 based on Foata normal form. 1/2532 useless extension candidates. Maximal degree in co-relation 11553. Up to 1343 conditions per place. [2023-11-17 12:00:39,275 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 130 selfloop transitions, 18 changer transitions 14/162 dead transitions. [2023-11-17 12:00:39,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 162 transitions, 1655 flow [2023-11-17 12:00:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 12:00:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2023-11-17 12:00:39,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 12:00:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 12:00:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 12:00:39,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:39,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:39,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:39,279 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 765 flow. Second operand 5 states and 102 transitions. [2023-11-17 12:00:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 162 transitions, 1655 flow [2023-11-17 12:00:39,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 162 transitions, 1598 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 12:00:39,325 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 881 flow [2023-11-17 12:00:39,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2023-11-17 12:00:39,326 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2023-11-17 12:00:39,326 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 881 flow [2023-11-17 12:00:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:39,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:39,326 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 12:00:39,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:00:39,326 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 12:00:39,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1936178105, now seen corresponding path program 2 times [2023-11-17 12:00:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728287628] [2023-11-17 12:00:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:39,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728287628] [2023-11-17 12:00:39,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728287628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:39,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:39,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085241179] [2023-11-17 12:00:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:39,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:39,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:39,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:39,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 881 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:40,043 INFO L124 PetriNetUnfolderBase]: 2004/2878 cut-off events. [2023-11-17 12:00:40,043 INFO L125 PetriNetUnfolderBase]: For 15414/15414 co-relation queries the response was YES. [2023-11-17 12:00:40,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11580 conditions, 2878 events. 2004/2878 cut-off events. For 15414/15414 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12304 event pairs, 754 based on Foata normal form. 1/2584 useless extension candidates. Maximal degree in co-relation 10875. Up to 1714 conditions per place. [2023-11-17 12:00:40,077 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 107 selfloop transitions, 12 changer transitions 11/130 dead transitions. [2023-11-17 12:00:40,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 1270 flow [2023-11-17 12:00:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2023-11-17 12:00:40,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2519480519480519 [2023-11-17 12:00:40,079 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 97 transitions. [2023-11-17 12:00:40,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 97 transitions. [2023-11-17 12:00:40,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:40,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 97 transitions. [2023-11-17 12:00:40,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:40,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:40,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:40,081 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 881 flow. Second operand 5 states and 97 transitions. [2023-11-17 12:00:40,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 1270 flow [2023-11-17 12:00:40,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 130 transitions, 1233 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:40,134 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 848 flow [2023-11-17 12:00:40,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=848, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-17 12:00:40,136 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-11-17 12:00:40,136 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 848 flow [2023-11-17 12:00:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:40,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:40,138 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 12:00:40,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:00:40,139 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 12:00:40,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1125600459, now seen corresponding path program 1 times [2023-11-17 12:00:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676119673] [2023-11-17 12:00:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676119673] [2023-11-17 12:00:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676119673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:00:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016655691] [2023-11-17 12:00:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:40,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:40,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 848 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:40,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:40,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:40,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:40,958 INFO L124 PetriNetUnfolderBase]: 3310/4640 cut-off events. [2023-11-17 12:00:40,959 INFO L125 PetriNetUnfolderBase]: For 26381/26381 co-relation queries the response was YES. [2023-11-17 12:00:40,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18958 conditions, 4640 events. 3310/4640 cut-off events. For 26381/26381 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 20575 event pairs, 1156 based on Foata normal form. 5/4155 useless extension candidates. Maximal degree in co-relation 18882. Up to 2015 conditions per place. [2023-11-17 12:00:41,042 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 137 selfloop transitions, 31 changer transitions 8/176 dead transitions. [2023-11-17 12:00:41,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 176 transitions, 1886 flow [2023-11-17 12:00:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2023-11-17 12:00:41,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24242424242424243 [2023-11-17 12:00:41,044 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 112 transitions. [2023-11-17 12:00:41,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 112 transitions. [2023-11-17 12:00:41,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:41,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 112 transitions. [2023-11-17 12:00:41,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,046 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 848 flow. Second operand 6 states and 112 transitions. [2023-11-17 12:00:41,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 176 transitions, 1886 flow [2023-11-17 12:00:41,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 176 transitions, 1846 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 12:00:41,131 INFO L231 Difference]: Finished difference. Result has 84 places, 109 transitions, 1093 flow [2023-11-17 12:00:41,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1093, PETRI_PLACES=84, PETRI_TRANSITIONS=109} [2023-11-17 12:00:41,133 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2023-11-17 12:00:41,133 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 109 transitions, 1093 flow [2023-11-17 12:00:41,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:41,134 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 12:00:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:00:41,135 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 12:00:41,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash -174996117, now seen corresponding path program 3 times [2023-11-17 12:00:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:41,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637795634] [2023-11-17 12:00:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:41,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637795634] [2023-11-17 12:00:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637795634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790039974] [2023-11-17 12:00:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:41,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:41,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:41,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 109 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:41,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:41,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:41,944 INFO L124 PetriNetUnfolderBase]: 2918/4082 cut-off events. [2023-11-17 12:00:41,944 INFO L125 PetriNetUnfolderBase]: For 22830/22830 co-relation queries the response was YES. [2023-11-17 12:00:41,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 4082 events. 2918/4082 cut-off events. For 22830/22830 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17522 event pairs, 1114 based on Foata normal form. 1/3621 useless extension candidates. Maximal degree in co-relation 16384. Up to 2824 conditions per place. [2023-11-17 12:00:41,978 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 123 selfloop transitions, 26 changer transitions 12/161 dead transitions. [2023-11-17 12:00:41,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 161 transitions, 1700 flow [2023-11-17 12:00:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-17 12:00:41,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2701298701298701 [2023-11-17 12:00:41,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-17 12:00:41,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-17 12:00:41,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:41,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-17 12:00:41,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:41,982 INFO L175 Difference]: Start difference. First operand has 84 places, 109 transitions, 1093 flow. Second operand 5 states and 104 transitions. [2023-11-17 12:00:41,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 161 transitions, 1700 flow [2023-11-17 12:00:42,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 161 transitions, 1652 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 12:00:42,051 INFO L231 Difference]: Finished difference. Result has 88 places, 112 transitions, 1113 flow [2023-11-17 12:00:42,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1113, PETRI_PLACES=88, PETRI_TRANSITIONS=112} [2023-11-17 12:00:42,052 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2023-11-17 12:00:42,052 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 112 transitions, 1113 flow [2023-11-17 12:00:42,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:42,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:42,052 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 12:00:42,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:00:42,052 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 12:00:42,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1662657407, now seen corresponding path program 4 times [2023-11-17 12:00:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:42,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175994171] [2023-11-17 12:00:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:42,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:42,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175994171] [2023-11-17 12:00:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175994171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:42,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199604769] [2023-11-17 12:00:42,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:42,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:42,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 112 transitions, 1113 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:42,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:42,905 INFO L124 PetriNetUnfolderBase]: 2874/4009 cut-off events. [2023-11-17 12:00:42,906 INFO L125 PetriNetUnfolderBase]: For 26445/26445 co-relation queries the response was YES. [2023-11-17 12:00:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 4009 events. 2874/4009 cut-off events. For 26445/26445 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17024 event pairs, 1203 based on Foata normal form. 1/3548 useless extension candidates. Maximal degree in co-relation 15976. Up to 3333 conditions per place. [2023-11-17 12:00:42,948 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 122 selfloop transitions, 10 changer transitions 13/145 dead transitions. [2023-11-17 12:00:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1507 flow [2023-11-17 12:00:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2023-11-17 12:00:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24675324675324675 [2023-11-17 12:00:42,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 95 transitions. [2023-11-17 12:00:42,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 95 transitions. [2023-11-17 12:00:42,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:42,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 95 transitions. [2023-11-17 12:00:42,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:42,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:42,951 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:42,951 INFO L175 Difference]: Start difference. First operand has 88 places, 112 transitions, 1113 flow. Second operand 5 states and 95 transitions. [2023-11-17 12:00:42,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1507 flow [2023-11-17 12:00:43,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1449 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-11-17 12:00:43,035 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 1010 flow [2023-11-17 12:00:43,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1010, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2023-11-17 12:00:43,038 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2023-11-17 12:00:43,038 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 1010 flow [2023-11-17 12:00:43,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:43,038 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 12:00:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:00:43,039 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 12:00:43,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash 932288089, now seen corresponding path program 5 times [2023-11-17 12:00:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:43,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655962531] [2023-11-17 12:00:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655962531] [2023-11-17 12:00:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655962531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:43,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044967946] [2023-11-17 12:00:43,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:43,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:43,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:43,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 1010 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:43,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:43,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:43,810 INFO L124 PetriNetUnfolderBase]: 2875/4024 cut-off events. [2023-11-17 12:00:43,810 INFO L125 PetriNetUnfolderBase]: For 22445/22445 co-relation queries the response was YES. [2023-11-17 12:00:43,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16444 conditions, 4024 events. 2875/4024 cut-off events. For 22445/22445 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17190 event pairs, 732 based on Foata normal form. 1/3555 useless extension candidates. Maximal degree in co-relation 16381. Up to 1918 conditions per place. [2023-11-17 12:00:43,846 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 142 selfloop transitions, 15 changer transitions 10/167 dead transitions. [2023-11-17 12:00:43,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 167 transitions, 1695 flow [2023-11-17 12:00:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 12:00:43,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2023-11-17 12:00:43,848 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 12:00:43,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 12:00:43,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:43,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 12:00:43,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,851 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,851 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 1010 flow. Second operand 5 states and 102 transitions. [2023-11-17 12:00:43,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 167 transitions, 1695 flow [2023-11-17 12:00:43,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 167 transitions, 1649 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-17 12:00:43,912 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 1121 flow [2023-11-17 12:00:43,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1121, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-11-17 12:00:43,914 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2023-11-17 12:00:43,914 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 1121 flow [2023-11-17 12:00:43,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:43,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:43,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 12:00:43,914 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 12:00:43,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2139029959, now seen corresponding path program 6 times [2023-11-17 12:00:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:43,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609017290] [2023-11-17 12:00:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609017290] [2023-11-17 12:00:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609017290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:44,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:44,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963813892] [2023-11-17 12:00:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:44,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:44,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 1121 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:44,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:44,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:44,688 INFO L124 PetriNetUnfolderBase]: 2867/4010 cut-off events. [2023-11-17 12:00:44,688 INFO L125 PetriNetUnfolderBase]: For 25971/25971 co-relation queries the response was YES. [2023-11-17 12:00:44,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16939 conditions, 4010 events. 2867/4010 cut-off events. For 25971/25971 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17092 event pairs, 1211 based on Foata normal form. 1/3537 useless extension candidates. Maximal degree in co-relation 13149. Up to 3333 conditions per place. [2023-11-17 12:00:44,722 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 136 selfloop transitions, 17 changer transitions 10/163 dead transitions. [2023-11-17 12:00:44,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 163 transitions, 1647 flow [2023-11-17 12:00:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2023-11-17 12:00:44,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2623376623376623 [2023-11-17 12:00:44,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 101 transitions. [2023-11-17 12:00:44,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 101 transitions. [2023-11-17 12:00:44,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:44,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 101 transitions. [2023-11-17 12:00:44,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,725 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 1121 flow. Second operand 5 states and 101 transitions. [2023-11-17 12:00:44,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 163 transitions, 1647 flow [2023-11-17 12:00:44,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 163 transitions, 1628 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:44,781 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 1135 flow [2023-11-17 12:00:44,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1135, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2023-11-17 12:00:44,782 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2023-11-17 12:00:44,783 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 1135 flow [2023-11-17 12:00:44,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:44,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:44,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 12:00:44,783 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 12:00:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 293008855, now seen corresponding path program 1 times [2023-11-17 12:00:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957412840] [2023-11-17 12:00:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:44,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:44,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957412840] [2023-11-17 12:00:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957412840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:44,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:44,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:00:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543160108] [2023-11-17 12:00:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:44,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:44,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 1135 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:44,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:44,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:44,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:45,397 INFO L124 PetriNetUnfolderBase]: 2575/3769 cut-off events. [2023-11-17 12:00:45,397 INFO L125 PetriNetUnfolderBase]: For 27064/27064 co-relation queries the response was YES. [2023-11-17 12:00:45,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16658 conditions, 3769 events. 2575/3769 cut-off events. For 27064/27064 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17541 event pairs, 1141 based on Foata normal form. 132/3523 useless extension candidates. Maximal degree in co-relation 13596. Up to 2465 conditions per place. [2023-11-17 12:00:45,423 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 158 selfloop transitions, 9 changer transitions 48/215 dead transitions. [2023-11-17 12:00:45,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 215 transitions, 2467 flow [2023-11-17 12:00:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2023-11-17 12:00:45,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22943722943722944 [2023-11-17 12:00:45,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 106 transitions. [2023-11-17 12:00:45,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 106 transitions. [2023-11-17 12:00:45,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:45,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 106 transitions. [2023-11-17 12:00:45,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:45,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:45,427 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:45,427 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 1135 flow. Second operand 6 states and 106 transitions. [2023-11-17 12:00:45,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 215 transitions, 2467 flow [2023-11-17 12:00:45,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 215 transitions, 2405 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:45,488 INFO L231 Difference]: Finished difference. Result has 98 places, 113 transitions, 1072 flow [2023-11-17 12:00:45,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1072, PETRI_PLACES=98, PETRI_TRANSITIONS=113} [2023-11-17 12:00:45,489 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 64 predicate places. [2023-11-17 12:00:45,489 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 113 transitions, 1072 flow [2023-11-17 12:00:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:45,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:45,489 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, 1] [2023-11-17 12:00:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 12:00:45,489 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 12:00:45,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1268430568, now seen corresponding path program 1 times [2023-11-17 12:00:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988717297] [2023-11-17 12:00:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:00:45,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:45,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988717297] [2023-11-17 12:00:45,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988717297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:45,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:45,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371641284] [2023-11-17 12:00:45,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:45,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:45,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 113 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:45,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:45,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:45,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:46,038 INFO L124 PetriNetUnfolderBase]: 2224/3401 cut-off events. [2023-11-17 12:00:46,038 INFO L125 PetriNetUnfolderBase]: For 22811/22811 co-relation queries the response was YES. [2023-11-17 12:00:46,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15134 conditions, 3401 events. 2224/3401 cut-off events. For 22811/22811 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16763 event pairs, 1034 based on Foata normal form. 110/3218 useless extension candidates. Maximal degree in co-relation 11691. Up to 2259 conditions per place. [2023-11-17 12:00:46,108 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 148 selfloop transitions, 7 changer transitions 50/205 dead transitions. [2023-11-17 12:00:46,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 205 transitions, 2342 flow [2023-11-17 12:00:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2023-11-17 12:00:46,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23809523809523808 [2023-11-17 12:00:46,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 110 transitions. [2023-11-17 12:00:46,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 110 transitions. [2023-11-17 12:00:46,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:46,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 110 transitions. [2023-11-17 12:00:46,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,114 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,114 INFO L175 Difference]: Start difference. First operand has 98 places, 113 transitions, 1072 flow. Second operand 6 states and 110 transitions. [2023-11-17 12:00:46,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 205 transitions, 2342 flow [2023-11-17 12:00:46,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 205 transitions, 2314 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 12:00:46,185 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 1026 flow [2023-11-17 12:00:46,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1026, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2023-11-17 12:00:46,186 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 67 predicate places. [2023-11-17 12:00:46,186 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 1026 flow [2023-11-17 12:00:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:46,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:46,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 12:00:46,187 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 12:00:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2012230656, now seen corresponding path program 1 times [2023-11-17 12:00:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102678604] [2023-11-17 12:00:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:46,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102678604] [2023-11-17 12:00:46,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102678604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:46,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023224484] [2023-11-17 12:00:46,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:46,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 1026 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:46,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:46,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:46,918 INFO L124 PetriNetUnfolderBase]: 2137/3284 cut-off events. [2023-11-17 12:00:46,918 INFO L125 PetriNetUnfolderBase]: For 21320/21320 co-relation queries the response was YES. [2023-11-17 12:00:46,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14232 conditions, 3284 events. 2137/3284 cut-off events. For 21320/21320 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16483 event pairs, 523 based on Foata normal form. 2/2986 useless extension candidates. Maximal degree in co-relation 11565. Up to 1573 conditions per place. [2023-11-17 12:00:46,946 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 149 selfloop transitions, 17 changer transitions 2/168 dead transitions. [2023-11-17 12:00:46,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 1800 flow [2023-11-17 12:00:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2023-11-17 12:00:46,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2753246753246753 [2023-11-17 12:00:46,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2023-11-17 12:00:46,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2023-11-17 12:00:46,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:46,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2023-11-17 12:00:46,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:46,950 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 1026 flow. Second operand 5 states and 106 transitions. [2023-11-17 12:00:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 1800 flow [2023-11-17 12:00:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 168 transitions, 1783 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 12:00:47,025 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1273 flow [2023-11-17 12:00:47,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1273, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2023-11-17 12:00:47,026 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 70 predicate places. [2023-11-17 12:00:47,026 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1273 flow [2023-11-17 12:00:47,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:47,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:47,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 12:00:47,027 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 12:00:47,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -891925680, now seen corresponding path program 2 times [2023-11-17 12:00:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073809444] [2023-11-17 12:00:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:47,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:47,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073809444] [2023-11-17 12:00:47,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073809444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:47,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:47,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22527468] [2023-11-17 12:00:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:47,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:47,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1273 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:47,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:47,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:47,758 INFO L124 PetriNetUnfolderBase]: 2127/3278 cut-off events. [2023-11-17 12:00:47,759 INFO L125 PetriNetUnfolderBase]: For 23424/23424 co-relation queries the response was YES. [2023-11-17 12:00:47,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14358 conditions, 3278 events. 2127/3278 cut-off events. For 23424/23424 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 16111 event pairs, 804 based on Foata normal form. 2/2984 useless extension candidates. Maximal degree in co-relation 13180. Up to 2262 conditions per place. [2023-11-17 12:00:47,779 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 135 selfloop transitions, 25 changer transitions 2/162 dead transitions. [2023-11-17 12:00:47,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 162 transitions, 1822 flow [2023-11-17 12:00:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2023-11-17 12:00:47,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2675324675324675 [2023-11-17 12:00:47,781 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2023-11-17 12:00:47,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2023-11-17 12:00:47,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:47,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2023-11-17 12:00:47,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,783 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1273 flow. Second operand 5 states and 103 transitions. [2023-11-17 12:00:47,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 162 transitions, 1822 flow [2023-11-17 12:00:47,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1792 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:47,840 INFO L231 Difference]: Finished difference. Result has 110 places, 120 transitions, 1387 flow [2023-11-17 12:00:47,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1387, PETRI_PLACES=110, PETRI_TRANSITIONS=120} [2023-11-17 12:00:47,841 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2023-11-17 12:00:47,841 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 120 transitions, 1387 flow [2023-11-17 12:00:47,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:47,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 12:00:47,842 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 12:00:47,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1498372743, now seen corresponding path program 1 times [2023-11-17 12:00:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092869012] [2023-11-17 12:00:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:47,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:47,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092869012] [2023-11-17 12:00:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092869012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:47,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:47,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:47,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068995079] [2023-11-17 12:00:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:47,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 120 transitions, 1387 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:48,547 INFO L124 PetriNetUnfolderBase]: 2367/3698 cut-off events. [2023-11-17 12:00:48,548 INFO L125 PetriNetUnfolderBase]: For 27427/27427 co-relation queries the response was YES. [2023-11-17 12:00:48,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16121 conditions, 3698 events. 2367/3698 cut-off events. For 27427/27427 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 19302 event pairs, 772 based on Foata normal form. 2/3372 useless extension candidates. Maximal degree in co-relation 15086. Up to 2006 conditions per place. [2023-11-17 12:00:48,579 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 148 selfloop transitions, 17 changer transitions 2/167 dead transitions. [2023-11-17 12:00:48,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 167 transitions, 1938 flow [2023-11-17 12:00:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2023-11-17 12:00:48,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2023-11-17 12:00:48,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2023-11-17 12:00:48,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2023-11-17 12:00:48,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:48,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2023-11-17 12:00:48,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:48,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:48,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:48,583 INFO L175 Difference]: Start difference. First operand has 110 places, 120 transitions, 1387 flow. Second operand 5 states and 105 transitions. [2023-11-17 12:00:48,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 167 transitions, 1938 flow [2023-11-17 12:00:48,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 167 transitions, 1912 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:48,714 INFO L231 Difference]: Finished difference. Result has 116 places, 123 transitions, 1474 flow [2023-11-17 12:00:48,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1474, PETRI_PLACES=116, PETRI_TRANSITIONS=123} [2023-11-17 12:00:48,715 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2023-11-17 12:00:48,715 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 123 transitions, 1474 flow [2023-11-17 12:00:48,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:48,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:48,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 12:00:48,715 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 12:00:48,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash 496730977, now seen corresponding path program 2 times [2023-11-17 12:00:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:48,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203288289] [2023-11-17 12:00:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:48,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203288289] [2023-11-17 12:00:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203288289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566092973] [2023-11-17 12:00:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:48,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 123 transitions, 1474 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:49,409 INFO L124 PetriNetUnfolderBase]: 2313/3612 cut-off events. [2023-11-17 12:00:49,409 INFO L125 PetriNetUnfolderBase]: For 29581/29581 co-relation queries the response was YES. [2023-11-17 12:00:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16252 conditions, 3612 events. 2313/3612 cut-off events. For 29581/29581 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 18952 event pairs, 481 based on Foata normal form. 2/3294 useless extension candidates. Maximal degree in co-relation 15344. Up to 1494 conditions per place. [2023-11-17 12:00:49,437 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 160 selfloop transitions, 18 changer transitions 2/180 dead transitions. [2023-11-17 12:00:49,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 180 transitions, 2260 flow [2023-11-17 12:00:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-17 12:00:49,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2701298701298701 [2023-11-17 12:00:49,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-17 12:00:49,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-17 12:00:49,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:49,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-17 12:00:49,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:49,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:49,441 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:49,441 INFO L175 Difference]: Start difference. First operand has 116 places, 123 transitions, 1474 flow. Second operand 5 states and 104 transitions. [2023-11-17 12:00:49,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 180 transitions, 2260 flow [2023-11-17 12:00:49,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 180 transitions, 2238 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:49,519 INFO L231 Difference]: Finished difference. Result has 122 places, 133 transitions, 1735 flow [2023-11-17 12:00:49,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1735, PETRI_PLACES=122, PETRI_TRANSITIONS=133} [2023-11-17 12:00:49,520 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-11-17 12:00:49,520 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 133 transitions, 1735 flow [2023-11-17 12:00:49,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:49,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:49,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:49,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 12:00:49,521 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 12:00:49,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1253392175, now seen corresponding path program 3 times [2023-11-17 12:00:49,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:49,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005293141] [2023-11-17 12:00:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:49,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:49,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:49,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005293141] [2023-11-17 12:00:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005293141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:49,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:49,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742429106] [2023-11-17 12:00:49,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:49,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:49,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:49,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 1735 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:49,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:49,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:49,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:50,222 INFO L124 PetriNetUnfolderBase]: 2259/3526 cut-off events. [2023-11-17 12:00:50,222 INFO L125 PetriNetUnfolderBase]: For 30978/30978 co-relation queries the response was YES. [2023-11-17 12:00:50,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 3526 events. 2259/3526 cut-off events. For 30978/30978 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18113 event pairs, 796 based on Foata normal form. 2/3216 useless extension candidates. Maximal degree in co-relation 15400. Up to 2006 conditions per place. [2023-11-17 12:00:50,247 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 139 selfloop transitions, 25 changer transitions 5/169 dead transitions. [2023-11-17 12:00:50,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 169 transitions, 2205 flow [2023-11-17 12:00:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2023-11-17 12:00:50,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2597402597402597 [2023-11-17 12:00:50,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2023-11-17 12:00:50,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2023-11-17 12:00:50,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:50,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2023-11-17 12:00:50,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:50,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:50,252 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 1735 flow. Second operand 5 states and 100 transitions. [2023-11-17 12:00:50,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 169 transitions, 2205 flow [2023-11-17 12:00:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 2173 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:50,334 INFO L231 Difference]: Finished difference. Result has 126 places, 130 transitions, 1726 flow [2023-11-17 12:00:50,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1726, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2023-11-17 12:00:50,334 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2023-11-17 12:00:50,334 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 1726 flow [2023-11-17 12:00:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:50,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 12:00:50,335 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 12:00:50,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -377009703, now seen corresponding path program 4 times [2023-11-17 12:00:50,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:50,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213764959] [2023-11-17 12:00:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213764959] [2023-11-17 12:00:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213764959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:50,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:50,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77739089] [2023-11-17 12:00:50,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:50,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:50,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:50,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:50,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 1726 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:50,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:50,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:51,233 INFO L124 PetriNetUnfolderBase]: 2606/4097 cut-off events. [2023-11-17 12:00:51,234 INFO L125 PetriNetUnfolderBase]: For 36907/36907 co-relation queries the response was YES. [2023-11-17 12:00:51,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18944 conditions, 4097 events. 2606/4097 cut-off events. For 36907/36907 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22229 event pairs, 352 based on Foata normal form. 2/3719 useless extension candidates. Maximal degree in co-relation 18082. Up to 1446 conditions per place. [2023-11-17 12:00:51,259 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 179 selfloop transitions, 35 changer transitions 3/217 dead transitions. [2023-11-17 12:00:51,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 217 transitions, 2800 flow [2023-11-17 12:00:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2023-11-17 12:00:51,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2922077922077922 [2023-11-17 12:00:51,262 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2023-11-17 12:00:51,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2023-11-17 12:00:51,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:51,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2023-11-17 12:00:51,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:51,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:51,272 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:51,272 INFO L175 Difference]: Start difference. First operand has 126 places, 130 transitions, 1726 flow. Second operand 6 states and 135 transitions. [2023-11-17 12:00:51,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 217 transitions, 2800 flow [2023-11-17 12:00:51,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 217 transitions, 2691 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-17 12:00:51,363 INFO L231 Difference]: Finished difference. Result has 131 places, 143 transitions, 1966 flow [2023-11-17 12:00:51,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1966, PETRI_PLACES=131, PETRI_TRANSITIONS=143} [2023-11-17 12:00:51,364 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-17 12:00:51,364 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 143 transitions, 1966 flow [2023-11-17 12:00:51,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:51,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:51,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:51,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 12:00:51,365 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 12:00:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2048942491, now seen corresponding path program 5 times [2023-11-17 12:00:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646698605] [2023-11-17 12:00:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646698605] [2023-11-17 12:00:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646698605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:51,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983404195] [2023-11-17 12:00:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:51,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:51,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 143 transitions, 1966 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:52,303 INFO L124 PetriNetUnfolderBase]: 2615/4102 cut-off events. [2023-11-17 12:00:52,303 INFO L125 PetriNetUnfolderBase]: For 37293/37293 co-relation queries the response was YES. [2023-11-17 12:00:52,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19202 conditions, 4102 events. 2615/4102 cut-off events. For 37293/37293 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22038 event pairs, 412 based on Foata normal form. 2/3718 useless extension candidates. Maximal degree in co-relation 18551. Up to 1386 conditions per place. [2023-11-17 12:00:52,332 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 165 selfloop transitions, 54 changer transitions 3/222 dead transitions. [2023-11-17 12:00:52,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 222 transitions, 2938 flow [2023-11-17 12:00:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2023-11-17 12:00:52,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2922077922077922 [2023-11-17 12:00:52,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2023-11-17 12:00:52,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2023-11-17 12:00:52,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:52,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2023-11-17 12:00:52,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:52,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:52,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:52,336 INFO L175 Difference]: Start difference. First operand has 131 places, 143 transitions, 1966 flow. Second operand 6 states and 135 transitions. [2023-11-17 12:00:52,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 222 transitions, 2938 flow [2023-11-17 12:00:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 222 transitions, 2878 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-17 12:00:52,482 INFO L231 Difference]: Finished difference. Result has 139 places, 150 transitions, 2192 flow [2023-11-17 12:00:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2192, PETRI_PLACES=139, PETRI_TRANSITIONS=150} [2023-11-17 12:00:52,482 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 105 predicate places. [2023-11-17 12:00:52,482 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 150 transitions, 2192 flow [2023-11-17 12:00:52,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:52,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 12:00:52,483 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 12:00:52,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 972779439, now seen corresponding path program 6 times [2023-11-17 12:00:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:52,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128467688] [2023-11-17 12:00:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128467688] [2023-11-17 12:00:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128467688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420626260] [2023-11-17 12:00:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:52,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:52,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 150 transitions, 2192 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:52,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:52,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:52,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:53,327 INFO L124 PetriNetUnfolderBase]: 2577/4032 cut-off events. [2023-11-17 12:00:53,328 INFO L125 PetriNetUnfolderBase]: For 40815/40815 co-relation queries the response was YES. [2023-11-17 12:00:53,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19717 conditions, 4032 events. 2577/4032 cut-off events. For 40815/40815 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21405 event pairs, 600 based on Foata normal form. 2/3656 useless extension candidates. Maximal degree in co-relation 19075. Up to 2042 conditions per place. [2023-11-17 12:00:53,364 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 135 selfloop transitions, 44 changer transitions 6/185 dead transitions. [2023-11-17 12:00:53,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 185 transitions, 2698 flow [2023-11-17 12:00:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2023-11-17 12:00:53,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2023-11-17 12:00:53,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2023-11-17 12:00:53,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2023-11-17 12:00:53,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:53,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2023-11-17 12:00:53,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:53,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:53,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:53,366 INFO L175 Difference]: Start difference. First operand has 139 places, 150 transitions, 2192 flow. Second operand 5 states and 99 transitions. [2023-11-17 12:00:53,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 185 transitions, 2698 flow [2023-11-17 12:00:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 185 transitions, 2655 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-11-17 12:00:53,518 INFO L231 Difference]: Finished difference. Result has 143 places, 145 transitions, 2164 flow [2023-11-17 12:00:53,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2164, PETRI_PLACES=143, PETRI_TRANSITIONS=145} [2023-11-17 12:00:53,519 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 109 predicate places. [2023-11-17 12:00:53,519 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 145 transitions, 2164 flow [2023-11-17 12:00:53,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:53,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:53,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 12:00:53,520 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 12:00:53,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash -505811722, now seen corresponding path program 3 times [2023-11-17 12:00:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131708772] [2023-11-17 12:00:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:53,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:53,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131708772] [2023-11-17 12:00:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131708772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:53,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:53,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357017468] [2023-11-17 12:00:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:53,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:53,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 145 transitions, 2164 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:53,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:53,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:53,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:54,323 INFO L124 PetriNetUnfolderBase]: 2903/4542 cut-off events. [2023-11-17 12:00:54,323 INFO L125 PetriNetUnfolderBase]: For 47068/47068 co-relation queries the response was YES. [2023-11-17 12:00:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22069 conditions, 4542 events. 2903/4542 cut-off events. For 47068/47068 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24806 event pairs, 463 based on Foata normal form. 2/4096 useless extension candidates. Maximal degree in co-relation 21232. Up to 1391 conditions per place. [2023-11-17 12:00:54,360 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 174 selfloop transitions, 45 changer transitions 3/222 dead transitions. [2023-11-17 12:00:54,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 222 transitions, 3119 flow [2023-11-17 12:00:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2023-11-17 12:00:54,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2922077922077922 [2023-11-17 12:00:54,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2023-11-17 12:00:54,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2023-11-17 12:00:54,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:54,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2023-11-17 12:00:54,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:54,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:54,364 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:54,364 INFO L175 Difference]: Start difference. First operand has 143 places, 145 transitions, 2164 flow. Second operand 6 states and 135 transitions. [2023-11-17 12:00:54,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 222 transitions, 3119 flow [2023-11-17 12:00:54,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 222 transitions, 3052 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-17 12:00:54,529 INFO L231 Difference]: Finished difference. Result has 150 places, 155 transitions, 2467 flow [2023-11-17 12:00:54,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2467, PETRI_PLACES=150, PETRI_TRANSITIONS=155} [2023-11-17 12:00:54,529 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 116 predicate places. [2023-11-17 12:00:54,529 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 155 transitions, 2467 flow [2023-11-17 12:00:54,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:54,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:54,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:54,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 12:00:54,530 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 12:00:54,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1615190458, now seen corresponding path program 4 times [2023-11-17 12:00:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:54,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336848847] [2023-11-17 12:00:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336848847] [2023-11-17 12:00:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336848847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:54,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:54,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095693623] [2023-11-17 12:00:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:54,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:54,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 155 transitions, 2467 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:54,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:54,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:54,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:55,578 INFO L124 PetriNetUnfolderBase]: 2877/4492 cut-off events. [2023-11-17 12:00:55,578 INFO L125 PetriNetUnfolderBase]: For 47774/47774 co-relation queries the response was YES. [2023-11-17 12:00:55,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22023 conditions, 4492 events. 2877/4492 cut-off events. For 47774/47774 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24397 event pairs, 419 based on Foata normal form. 2/4050 useless extension candidates. Maximal degree in co-relation 21168. Up to 1619 conditions per place. [2023-11-17 12:00:55,605 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 159 selfloop transitions, 60 changer transitions 3/222 dead transitions. [2023-11-17 12:00:55,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 222 transitions, 3259 flow [2023-11-17 12:00:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:00:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:00:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-17 12:00:55,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2023-11-17 12:00:55,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-17 12:00:55,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-17 12:00:55,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:55,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-17 12:00:55,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:55,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:55,608 INFO L175 Difference]: Start difference. First operand has 150 places, 155 transitions, 2467 flow. Second operand 6 states and 133 transitions. [2023-11-17 12:00:55,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 222 transitions, 3259 flow [2023-11-17 12:00:55,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 222 transitions, 3231 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-17 12:00:55,801 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 2598 flow [2023-11-17 12:00:55,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2598, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2023-11-17 12:00:55,801 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 123 predicate places. [2023-11-17 12:00:55,801 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 2598 flow [2023-11-17 12:00:55,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:55,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:55,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:55,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 12:00:55,802 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 12:00:55,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2101229938, now seen corresponding path program 5 times [2023-11-17 12:00:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883419011] [2023-11-17 12:00:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883419011] [2023-11-17 12:00:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883419011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:55,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:55,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370645578] [2023-11-17 12:00:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:55,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:55,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:55,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 155 transitions, 2598 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:55,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:55,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:56,719 INFO L124 PetriNetUnfolderBase]: 2851/4442 cut-off events. [2023-11-17 12:00:56,719 INFO L125 PetriNetUnfolderBase]: For 58015/58015 co-relation queries the response was YES. [2023-11-17 12:00:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22619 conditions, 4442 events. 2851/4442 cut-off events. For 58015/58015 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23753 event pairs, 1038 based on Foata normal form. 2/4004 useless extension candidates. Maximal degree in co-relation 21854. Up to 3326 conditions per place. [2023-11-17 12:00:56,755 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 158 selfloop transitions, 25 changer transitions 5/188 dead transitions. [2023-11-17 12:00:56,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 3087 flow [2023-11-17 12:00:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2023-11-17 12:00:56,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2545454545454545 [2023-11-17 12:00:56,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 98 transitions. [2023-11-17 12:00:56,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 98 transitions. [2023-11-17 12:00:56,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:56,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 98 transitions. [2023-11-17 12:00:56,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:56,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:56,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:56,758 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 2598 flow. Second operand 5 states and 98 transitions. [2023-11-17 12:00:56,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 3087 flow [2023-11-17 12:00:56,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 188 transitions, 2974 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-11-17 12:00:56,976 INFO L231 Difference]: Finished difference. Result has 152 places, 151 transitions, 2477 flow [2023-11-17 12:00:56,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2477, PETRI_PLACES=152, PETRI_TRANSITIONS=151} [2023-11-17 12:00:56,976 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 118 predicate places. [2023-11-17 12:00:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 151 transitions, 2477 flow [2023-11-17 12:00:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:56,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:56,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:56,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 12:00:56,977 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 12:00:56,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1729545724, now seen corresponding path program 6 times [2023-11-17 12:00:56,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:56,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5004674] [2023-11-17 12:00:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5004674] [2023-11-17 12:00:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5004674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:57,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389411052] [2023-11-17 12:00:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:57,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:57,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 151 transitions, 2477 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:57,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:57,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:57,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:57,819 INFO L124 PetriNetUnfolderBase]: 2834/4395 cut-off events. [2023-11-17 12:00:57,819 INFO L125 PetriNetUnfolderBase]: For 49955/49955 co-relation queries the response was YES. [2023-11-17 12:00:57,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21739 conditions, 4395 events. 2834/4395 cut-off events. For 49955/49955 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23319 event pairs, 770 based on Foata normal form. 2/3961 useless extension candidates. Maximal degree in co-relation 21100. Up to 2442 conditions per place. [2023-11-17 12:00:57,852 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 132 selfloop transitions, 47 changer transitions 6/185 dead transitions. [2023-11-17 12:00:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 185 transitions, 2971 flow [2023-11-17 12:00:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2023-11-17 12:00:57,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2023-11-17 12:00:57,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2023-11-17 12:00:57,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2023-11-17 12:00:57,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:57,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2023-11-17 12:00:57,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:57,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:57,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:57,854 INFO L175 Difference]: Start difference. First operand has 152 places, 151 transitions, 2477 flow. Second operand 5 states and 99 transitions. [2023-11-17 12:00:57,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 185 transitions, 2971 flow [2023-11-17 12:00:58,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 185 transitions, 2837 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 12:00:58,016 INFO L231 Difference]: Finished difference. Result has 151 places, 146 transitions, 2359 flow [2023-11-17 12:00:58,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2359, PETRI_PLACES=151, PETRI_TRANSITIONS=146} [2023-11-17 12:00:58,017 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 117 predicate places. [2023-11-17 12:00:58,017 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 146 transitions, 2359 flow [2023-11-17 12:00:58,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:58,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 12:00:58,017 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 12:00:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1760055314, now seen corresponding path program 1 times [2023-11-17 12:00:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666941893] [2023-11-17 12:00:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:58,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666941893] [2023-11-17 12:00:58,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666941893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:58,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:58,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:58,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3355404] [2023-11-17 12:00:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:00:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:00:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:00:58,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:58,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 2359 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:58,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:58,790 INFO L124 PetriNetUnfolderBase]: 2815/4362 cut-off events. [2023-11-17 12:00:58,790 INFO L125 PetriNetUnfolderBase]: For 52714/52714 co-relation queries the response was YES. [2023-11-17 12:00:58,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21506 conditions, 4362 events. 2815/4362 cut-off events. For 52714/52714 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 23120 event pairs, 892 based on Foata normal form. 2/3932 useless extension candidates. Maximal degree in co-relation 20872. Up to 2758 conditions per place. [2023-11-17 12:00:58,818 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 151 selfloop transitions, 18 changer transitions 18/187 dead transitions. [2023-11-17 12:00:58,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 187 transitions, 2861 flow [2023-11-17 12:00:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2023-11-17 12:00:58,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2675324675324675 [2023-11-17 12:00:58,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2023-11-17 12:00:58,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2023-11-17 12:00:58,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:58,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2023-11-17 12:00:58,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,821 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 2359 flow. Second operand 5 states and 103 transitions. [2023-11-17 12:00:58,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 187 transitions, 2861 flow [2023-11-17 12:00:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 187 transitions, 2750 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 12:00:58,987 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 2212 flow [2023-11-17 12:00:58,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2212, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2023-11-17 12:00:58,988 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 118 predicate places. [2023-11-17 12:00:58,988 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 2212 flow [2023-11-17 12:00:58,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:58,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:58,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:58,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 12:00:58,989 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 12:00:58,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash 853933898, now seen corresponding path program 2 times [2023-11-17 12:00:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:58,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903160840] [2023-11-17 12:00:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:59,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:59,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903160840] [2023-11-17 12:00:59,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903160840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:59,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:59,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813095628] [2023-11-17 12:00:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:59,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:00:59,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:00:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:00:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 2212 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:59,642 INFO L124 PetriNetUnfolderBase]: 2395/3700 cut-off events. [2023-11-17 12:00:59,643 INFO L125 PetriNetUnfolderBase]: For 39968/39968 co-relation queries the response was YES. [2023-11-17 12:00:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17531 conditions, 3700 events. 2395/3700 cut-off events. For 39968/39968 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18788 event pairs, 605 based on Foata normal form. 24/3356 useless extension candidates. Maximal degree in co-relation 17482. Up to 1733 conditions per place. [2023-11-17 12:00:59,674 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 136 selfloop transitions, 29 changer transitions 8/173 dead transitions. [2023-11-17 12:00:59,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 173 transitions, 2458 flow [2023-11-17 12:00:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:00:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:00:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2023-11-17 12:00:59,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-17 12:00:59,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 110 transitions. [2023-11-17 12:00:59,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 110 transitions. [2023-11-17 12:00:59,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:59,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 110 transitions. [2023-11-17 12:00:59,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,676 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 2212 flow. Second operand 5 states and 110 transitions. [2023-11-17 12:00:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 173 transitions, 2458 flow [2023-11-17 12:00:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 173 transitions, 2374 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-11-17 12:00:59,815 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1837 flow [2023-11-17 12:00:59,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1837, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2023-11-17 12:00:59,815 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 106 predicate places. [2023-11-17 12:00:59,815 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1837 flow [2023-11-17 12:00:59,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:59,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:00:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 12:00:59,816 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 12:00:59,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 224098244, now seen corresponding path program 3 times [2023-11-17 12:00:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493229759] [2023-11-17 12:00:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:00:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493229759] [2023-11-17 12:00:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493229759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:00:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:00:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:00:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908371562] [2023-11-17 12:00:59,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:00:59,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:00:59,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:59,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:00:59,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:00:59,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:00:59,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1837 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:00:59,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:59,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:00:59,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:00,469 INFO L124 PetriNetUnfolderBase]: 2122/3263 cut-off events. [2023-11-17 12:01:00,469 INFO L125 PetriNetUnfolderBase]: For 34769/34769 co-relation queries the response was YES. [2023-11-17 12:01:00,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14391 conditions, 3263 events. 2122/3263 cut-off events. For 34769/34769 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16016 event pairs, 291 based on Foata normal form. 48/2967 useless extension candidates. Maximal degree in co-relation 14346. Up to 1750 conditions per place. [2023-11-17 12:01:00,489 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 115 selfloop transitions, 27 changer transitions 6/148 dead transitions. [2023-11-17 12:01:00,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 148 transitions, 2182 flow [2023-11-17 12:01:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2023-11-17 12:01:00,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24675324675324675 [2023-11-17 12:01:00,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 95 transitions. [2023-11-17 12:01:00,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 95 transitions. [2023-11-17 12:01:00,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:00,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 95 transitions. [2023-11-17 12:01:00,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:00,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:00,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:00,491 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1837 flow. Second operand 5 states and 95 transitions. [2023-11-17 12:01:00,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 148 transitions, 2182 flow [2023-11-17 12:01:00,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 148 transitions, 2075 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-11-17 12:01:00,569 INFO L231 Difference]: Finished difference. Result has 131 places, 115 transitions, 1653 flow [2023-11-17 12:01:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1653, PETRI_PLACES=131, PETRI_TRANSITIONS=115} [2023-11-17 12:01:00,569 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-17 12:01:00,569 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 115 transitions, 1653 flow [2023-11-17 12:01:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:00,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:00,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 12:01:00,570 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 12:01:00,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1455869204, now seen corresponding path program 4 times [2023-11-17 12:01:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:00,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882958710] [2023-11-17 12:01:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882958710] [2023-11-17 12:01:00,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882958710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:00,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:00,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747679918] [2023-11-17 12:01:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:00,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:00,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:00,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 115 transitions, 1653 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:00,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:00,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:00,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:01,125 INFO L124 PetriNetUnfolderBase]: 1886/2907 cut-off events. [2023-11-17 12:01:01,125 INFO L125 PetriNetUnfolderBase]: For 27091/27091 co-relation queries the response was YES. [2023-11-17 12:01:01,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12765 conditions, 2907 events. 1886/2907 cut-off events. For 27091/27091 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13908 event pairs, 392 based on Foata normal form. 36/2631 useless extension candidates. Maximal degree in co-relation 12726. Up to 2338 conditions per place. [2023-11-17 12:01:01,147 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 120 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2023-11-17 12:01:01,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 138 transitions, 2004 flow [2023-11-17 12:01:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:01:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:01:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-17 12:01:01,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2662337662337662 [2023-11-17 12:01:01,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-17 12:01:01,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-17 12:01:01,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:01,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-17 12:01:01,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,149 INFO L175 Difference]: Start difference. First operand has 131 places, 115 transitions, 1653 flow. Second operand 4 states and 82 transitions. [2023-11-17 12:01:01,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 138 transitions, 2004 flow [2023-11-17 12:01:01,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 1925 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-17 12:01:01,212 INFO L231 Difference]: Finished difference. Result has 131 places, 117 transitions, 1674 flow [2023-11-17 12:01:01,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1674, PETRI_PLACES=131, PETRI_TRANSITIONS=117} [2023-11-17 12:01:01,213 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-17 12:01:01,213 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 117 transitions, 1674 flow [2023-11-17 12:01:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:01,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 12:01:01,214 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 12:01:01,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1973591244, now seen corresponding path program 5 times [2023-11-17 12:01:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797676619] [2023-11-17 12:01:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797676619] [2023-11-17 12:01:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797676619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:01,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:01,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:01,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051179928] [2023-11-17 12:01:01,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:01,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:01,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:01,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 117 transitions, 1674 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:01,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:01,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:01,625 INFO L124 PetriNetUnfolderBase]: 1754/2715 cut-off events. [2023-11-17 12:01:01,625 INFO L125 PetriNetUnfolderBase]: For 23722/23722 co-relation queries the response was YES. [2023-11-17 12:01:01,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11986 conditions, 2715 events. 1754/2715 cut-off events. For 23722/23722 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12955 event pairs, 358 based on Foata normal form. 24/2443 useless extension candidates. Maximal degree in co-relation 11948. Up to 2078 conditions per place. [2023-11-17 12:01:01,644 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 114 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2023-11-17 12:01:01,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 1896 flow [2023-11-17 12:01:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:01:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:01:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-17 12:01:01,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2023-11-17 12:01:01,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-17 12:01:01,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-17 12:01:01,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:01,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-17 12:01:01,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,646 INFO L175 Difference]: Start difference. First operand has 131 places, 117 transitions, 1674 flow. Second operand 4 states and 84 transitions. [2023-11-17 12:01:01,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 1896 flow [2023-11-17 12:01:01,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 1876 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 12:01:01,702 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1591 flow [2023-11-17 12:01:01,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1591, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2023-11-17 12:01:01,702 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-17 12:01:01,703 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1591 flow [2023-11-17 12:01:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:01,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:01,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 12:01:01,703 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 12:01:01,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1450969630, now seen corresponding path program 6 times [2023-11-17 12:01:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638874014] [2023-11-17 12:01:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:01,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:01,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638874014] [2023-11-17 12:01:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638874014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:01,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248206514] [2023-11-17 12:01:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:01,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:01,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:01,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:01,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1591 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:01,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:01,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:02,271 INFO L124 PetriNetUnfolderBase]: 1549/2390 cut-off events. [2023-11-17 12:01:02,272 INFO L125 PetriNetUnfolderBase]: For 21848/21848 co-relation queries the response was YES. [2023-11-17 12:01:02,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 2390 events. 1549/2390 cut-off events. For 21848/21848 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10942 event pairs, 247 based on Foata normal form. 24/2156 useless extension candidates. Maximal degree in co-relation 10780. Up to 1366 conditions per place. [2023-11-17 12:01:02,295 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 101 selfloop transitions, 21 changer transitions 11/133 dead transitions. [2023-11-17 12:01:02,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 133 transitions, 1794 flow [2023-11-17 12:01:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2023-11-17 12:01:02,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24675324675324675 [2023-11-17 12:01:02,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 95 transitions. [2023-11-17 12:01:02,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 95 transitions. [2023-11-17 12:01:02,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:02,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 95 transitions. [2023-11-17 12:01:02,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:02,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:02,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:02,298 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1591 flow. Second operand 5 states and 95 transitions. [2023-11-17 12:01:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 133 transitions, 1794 flow [2023-11-17 12:01:02,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 133 transitions, 1747 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 12:01:02,374 INFO L231 Difference]: Finished difference. Result has 126 places, 92 transitions, 1305 flow [2023-11-17 12:01:02,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1305, PETRI_PLACES=126, PETRI_TRANSITIONS=92} [2023-11-17 12:01:02,374 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2023-11-17 12:01:02,375 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 92 transitions, 1305 flow [2023-11-17 12:01:02,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:02,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:02,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:02,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 12:01:02,375 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 12:01:02,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:02,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1805054981, now seen corresponding path program 1 times [2023-11-17 12:01:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234744773] [2023-11-17 12:01:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:02,645 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 12:01:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234744773] [2023-11-17 12:01:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234744773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791570258] [2023-11-17 12:01:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:02,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:02,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:02,653 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 12:01:02,678 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 12:01:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:02,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:01:02,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:02,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791570258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:02,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 12:01:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836915244] [2023-11-17 12:01:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:02,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:01:02,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:02,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 92 transitions, 1305 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:02,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:02,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:03,158 INFO L124 PetriNetUnfolderBase]: 1261/1950 cut-off events. [2023-11-17 12:01:03,158 INFO L125 PetriNetUnfolderBase]: For 16977/16977 co-relation queries the response was YES. [2023-11-17 12:01:03,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8539 conditions, 1950 events. 1261/1950 cut-off events. For 16977/16977 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8661 event pairs, 112 based on Foata normal form. 58/1788 useless extension candidates. Maximal degree in co-relation 8502. Up to 1120 conditions per place. [2023-11-17 12:01:03,171 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 94 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2023-11-17 12:01:03,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1541 flow [2023-11-17 12:01:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2023-11-17 12:01:03,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24935064935064935 [2023-11-17 12:01:03,172 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 96 transitions. [2023-11-17 12:01:03,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 96 transitions. [2023-11-17 12:01:03,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:03,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 96 transitions. [2023-11-17 12:01:03,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,173 INFO L175 Difference]: Start difference. First operand has 126 places, 92 transitions, 1305 flow. Second operand 5 states and 96 transitions. [2023-11-17 12:01:03,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1541 flow [2023-11-17 12:01:03,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 117 transitions, 1373 flow, removed 48 selfloop flow, removed 11 redundant places. [2023-11-17 12:01:03,210 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 1142 flow [2023-11-17 12:01:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1142, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2023-11-17 12:01:03,210 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 77 predicate places. [2023-11-17 12:01:03,210 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 1142 flow [2023-11-17 12:01:03,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:03,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:03,217 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 12:01:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 12:01:03,411 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 12:01:03,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 125414837, now seen corresponding path program 2 times [2023-11-17 12:01:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:03,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318296520] [2023-11-17 12:01:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318296520] [2023-11-17 12:01:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318296520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:03,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132244853] [2023-11-17 12:01:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:03,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:03,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:03,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 1142 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:03,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:03,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:03,791 INFO L124 PetriNetUnfolderBase]: 1173/1818 cut-off events. [2023-11-17 12:01:03,791 INFO L125 PetriNetUnfolderBase]: For 13078/13078 co-relation queries the response was YES. [2023-11-17 12:01:03,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 1818 events. 1173/1818 cut-off events. For 13078/13078 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7884 event pairs, 368 based on Foata normal form. 28/1633 useless extension candidates. Maximal degree in co-relation 7535. Up to 1159 conditions per place. [2023-11-17 12:01:03,806 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 102 selfloop transitions, 14 changer transitions 8/124 dead transitions. [2023-11-17 12:01:03,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 1447 flow [2023-11-17 12:01:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2023-11-17 12:01:03,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2545454545454545 [2023-11-17 12:01:03,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 98 transitions. [2023-11-17 12:01:03,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 98 transitions. [2023-11-17 12:01:03,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:03,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 98 transitions. [2023-11-17 12:01:03,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,809 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 1142 flow. Second operand 5 states and 98 transitions. [2023-11-17 12:01:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 124 transitions, 1447 flow [2023-11-17 12:01:03,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 124 transitions, 1396 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 12:01:03,843 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 1013 flow [2023-11-17 12:01:03,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2023-11-17 12:01:03,843 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2023-11-17 12:01:03,843 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 1013 flow [2023-11-17 12:01:03,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-17 12:01:03,844 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 12:01:03,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash 951323647, now seen corresponding path program 3 times [2023-11-17 12:01:03,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:03,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12736647] [2023-11-17 12:01:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:03,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:04,037 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 12:01:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12736647] [2023-11-17 12:01:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12736647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113222211] [2023-11-17 12:01:04,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:01:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:04,040 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 12:01:04,046 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 12:01:04,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 12:01:04,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:04,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:01:04,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:04,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:04,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113222211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:04,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:04,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 12:01:04,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247799540] [2023-11-17 12:01:04,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:04,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:01:04,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:04,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 83 transitions, 1013 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:04,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:04,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:04,517 INFO L124 PetriNetUnfolderBase]: 1122/1687 cut-off events. [2023-11-17 12:01:04,518 INFO L125 PetriNetUnfolderBase]: For 9909/9909 co-relation queries the response was YES. [2023-11-17 12:01:04,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6508 conditions, 1687 events. 1122/1687 cut-off events. For 9909/9909 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6801 event pairs, 76 based on Foata normal form. 48/1520 useless extension candidates. Maximal degree in co-relation 6478. Up to 1213 conditions per place. [2023-11-17 12:01:04,532 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 94 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2023-11-17 12:01:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 112 transitions, 1247 flow [2023-11-17 12:01:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2023-11-17 12:01:04,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24935064935064935 [2023-11-17 12:01:04,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 96 transitions. [2023-11-17 12:01:04,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 96 transitions. [2023-11-17 12:01:04,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:04,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 96 transitions. [2023-11-17 12:01:04,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,538 INFO L175 Difference]: Start difference. First operand has 108 places, 83 transitions, 1013 flow. Second operand 5 states and 96 transitions. [2023-11-17 12:01:04,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 112 transitions, 1247 flow [2023-11-17 12:01:04,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 112 transitions, 1176 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-17 12:01:04,560 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 909 flow [2023-11-17 12:01:04,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=909, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2023-11-17 12:01:04,561 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 69 predicate places. [2023-11-17 12:01:04,561 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 909 flow [2023-11-17 12:01:04,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:04,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:04,567 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 12:01:04,762 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,SelfDestructingSolverStorable36 [2023-11-17 12:01:04,762 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 12:01:04,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:04,763 INFO L85 PathProgramCache]: Analyzing trace with hash -191113159, now seen corresponding path program 4 times [2023-11-17 12:01:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:04,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083865936] [2023-11-17 12:01:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083865936] [2023-11-17 12:01:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083865936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038139373] [2023-11-17 12:01:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:04,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:01:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:01:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:01:04,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:04,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:04,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:04,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:04,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:05,058 INFO L124 PetriNetUnfolderBase]: 991/1460 cut-off events. [2023-11-17 12:01:05,059 INFO L125 PetriNetUnfolderBase]: For 6610/6610 co-relation queries the response was YES. [2023-11-17 12:01:05,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1460 events. 991/1460 cut-off events. For 6610/6610 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5454 event pairs, 170 based on Foata normal form. 14/1285 useless extension candidates. Maximal degree in co-relation 5816. Up to 1297 conditions per place. [2023-11-17 12:01:05,065 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 66 selfloop transitions, 5 changer transitions 15/86 dead transitions. [2023-11-17 12:01:05,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 86 transitions, 987 flow [2023-11-17 12:01:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:01:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:01:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2023-11-17 12:01:05,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2305194805194805 [2023-11-17 12:01:05,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 71 transitions. [2023-11-17 12:01:05,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 71 transitions. [2023-11-17 12:01:05,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:05,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 71 transitions. [2023-11-17 12:01:05,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,067 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 909 flow. Second operand 4 states and 71 transitions. [2023-11-17 12:01:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 86 transitions, 987 flow [2023-11-17 12:01:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 956 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 12:01:05,081 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 658 flow [2023-11-17 12:01:05,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=658, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2023-11-17 12:01:05,082 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 64 predicate places. [2023-11-17 12:01:05,082 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 658 flow [2023-11-17 12:01:05,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:05,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:05,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-17 12:01:05,082 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 12:01:05,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1214135183, now seen corresponding path program 1 times [2023-11-17 12:01:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336233616] [2023-11-17 12:01:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:05,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336233616] [2023-11-17 12:01:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336233616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754507026] [2023-11-17 12:01:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:05,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:05,237 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 12:01:05,255 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 12:01:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:05,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:01:05,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:05,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:01:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754507026] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:05,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:01:05,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 14 [2023-11-17 12:01:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560036860] [2023-11-17 12:01:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:05,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:01:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:01:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-17 12:01:05,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:05,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:05,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:05,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:05,884 INFO L124 PetriNetUnfolderBase]: 1115/1571 cut-off events. [2023-11-17 12:01:05,884 INFO L125 PetriNetUnfolderBase]: For 6696/6696 co-relation queries the response was YES. [2023-11-17 12:01:05,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 1571 events. 1115/1571 cut-off events. For 6696/6696 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5803 event pairs, 258 based on Foata normal form. 76/1381 useless extension candidates. Maximal degree in co-relation 5588. Up to 1009 conditions per place. [2023-11-17 12:01:05,897 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 69 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2023-11-17 12:01:05,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 86 transitions, 1055 flow [2023-11-17 12:01:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:01:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:01:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2023-11-17 12:01:05,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14656771799628943 [2023-11-17 12:01:05,898 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 79 transitions. [2023-11-17 12:01:05,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 79 transitions. [2023-11-17 12:01:05,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:05,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 79 transitions. [2023-11-17 12:01:05,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:01:05,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:01:05,900 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 658 flow. Second operand 7 states and 79 transitions. [2023-11-17 12:01:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 86 transitions, 1055 flow [2023-11-17 12:01:05,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 953 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-11-17 12:01:05,917 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 655 flow [2023-11-17 12:01:05,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2023-11-17 12:01:05,918 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2023-11-17 12:01:05,918 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 655 flow [2023-11-17 12:01:05,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:05,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:05,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:05,929 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 12:01:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:06,130 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 12:01:06,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1633630158, now seen corresponding path program 1 times [2023-11-17 12:01:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707963469] [2023-11-17 12:01:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:01:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707963469] [2023-11-17 12:01:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707963469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:06,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:01:06,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:01:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403084856] [2023-11-17 12:01:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:01:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:01:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:01:06,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:06,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:06,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:06,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:06,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:06,450 INFO L124 PetriNetUnfolderBase]: 1115/1570 cut-off events. [2023-11-17 12:01:06,450 INFO L125 PetriNetUnfolderBase]: For 5770/5770 co-relation queries the response was YES. [2023-11-17 12:01:06,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1570 events. 1115/1570 cut-off events. For 5770/5770 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5559 event pairs, 468 based on Foata normal form. 1/1345 useless extension candidates. Maximal degree in co-relation 6152. Up to 1452 conditions per place. [2023-11-17 12:01:06,458 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 61 selfloop transitions, 0 changer transitions 25/86 dead transitions. [2023-11-17 12:01:06,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 896 flow [2023-11-17 12:01:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:01:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:01:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2023-11-17 12:01:06,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1974025974025974 [2023-11-17 12:01:06,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 76 transitions. [2023-11-17 12:01:06,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 76 transitions. [2023-11-17 12:01:06,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:06,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 76 transitions. [2023-11-17 12:01:06,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:06,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:06,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:06,460 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 655 flow. Second operand 5 states and 76 transitions. [2023-11-17 12:01:06,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 896 flow [2023-11-17 12:01:06,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 86 transitions, 891 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:01:06,470 INFO L231 Difference]: Finished difference. Result has 91 places, 61 transitions, 594 flow [2023-11-17 12:01:06,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=91, PETRI_TRANSITIONS=61} [2023-11-17 12:01:06,471 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 57 predicate places. [2023-11-17 12:01:06,471 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 61 transitions, 594 flow [2023-11-17 12:01:06,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:06,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:06,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-17 12:01:06,472 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 12:01:06,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash 15516957, now seen corresponding path program 1 times [2023-11-17 12:01:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:06,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418929464] [2023-11-17 12:01:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418929464] [2023-11-17 12:01:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418929464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876519727] [2023-11-17 12:01:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:06,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:06,695 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 12:01:06,711 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 12:01:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:06,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 12:01:06,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:07,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:07,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 12:01:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:07,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:07,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:07,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 111 [2023-11-17 12:01:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876519727] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:01:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 8] total 19 [2023-11-17 12:01:07,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309487934] [2023-11-17 12:01:07,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:01:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:01:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:01:07,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:07,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 61 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:07,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:07,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:07,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:08,135 INFO L124 PetriNetUnfolderBase]: 2162/3042 cut-off events. [2023-11-17 12:01:08,136 INFO L125 PetriNetUnfolderBase]: For 12526/12526 co-relation queries the response was YES. [2023-11-17 12:01:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12093 conditions, 3042 events. 2162/3042 cut-off events. For 12526/12526 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12304 event pairs, 323 based on Foata normal form. 2/2641 useless extension candidates. Maximal degree in co-relation 12070. Up to 644 conditions per place. [2023-11-17 12:01:08,154 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 154 selfloop transitions, 37 changer transitions 26/217 dead transitions. [2023-11-17 12:01:08,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 217 transitions, 2476 flow [2023-11-17 12:01:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:01:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:01:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2023-11-17 12:01:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20543093270365997 [2023-11-17 12:01:08,157 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 174 transitions. [2023-11-17 12:01:08,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 174 transitions. [2023-11-17 12:01:08,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:08,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 174 transitions. [2023-11-17 12:01:08,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:08,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 77.0) internal successors, (924), 12 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:08,160 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 77.0) internal successors, (924), 12 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:08,160 INFO L175 Difference]: Start difference. First operand has 91 places, 61 transitions, 594 flow. Second operand 11 states and 174 transitions. [2023-11-17 12:01:08,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 217 transitions, 2476 flow [2023-11-17 12:01:08,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 217 transitions, 2412 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 12:01:08,179 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 990 flow [2023-11-17 12:01:08,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=990, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2023-11-17 12:01:08,180 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 63 predicate places. [2023-11-17 12:01:08,180 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 990 flow [2023-11-17 12:01:08,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:08,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:08,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:08,187 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 12:01:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:08,385 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 12:01:08,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash 536415487, now seen corresponding path program 2 times [2023-11-17 12:01:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:08,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503691122] [2023-11-17 12:01:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503691122] [2023-11-17 12:01:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503691122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322003168] [2023-11-17 12:01:08,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:01:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:08,617 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 12:01:08,621 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 12:01:08,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 12:01:08,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:08,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:01:08,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:01:09,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322003168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:09,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:09,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-17 12:01:09,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172472355] [2023-11-17 12:01:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:01:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:01:09,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-17 12:01:09,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:09,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 990 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:09,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:09,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:09,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:09,880 INFO L124 PetriNetUnfolderBase]: 2635/3679 cut-off events. [2023-11-17 12:01:09,880 INFO L125 PetriNetUnfolderBase]: For 15633/15633 co-relation queries the response was YES. [2023-11-17 12:01:09,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15791 conditions, 3679 events. 2635/3679 cut-off events. For 15633/15633 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15620 event pairs, 350 based on Foata normal form. 52/3444 useless extension candidates. Maximal degree in co-relation 15764. Up to 994 conditions per place. [2023-11-17 12:01:09,901 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 150 selfloop transitions, 57 changer transitions 116/323 dead transitions. [2023-11-17 12:01:09,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 323 transitions, 3367 flow [2023-11-17 12:01:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 12:01:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 12:01:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 313 transitions. [2023-11-17 12:01:09,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20324675324675326 [2023-11-17 12:01:09,903 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 313 transitions. [2023-11-17 12:01:09,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 313 transitions. [2023-11-17 12:01:09,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:09,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 313 transitions. [2023-11-17 12:01:09,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 15.65) internal successors, (313), 20 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:09,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 77.0) internal successors, (1617), 21 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:09,906 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 77.0) internal successors, (1617), 21 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:09,906 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 990 flow. Second operand 20 states and 313 transitions. [2023-11-17 12:01:09,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 323 transitions, 3367 flow [2023-11-17 12:01:09,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 323 transitions, 3279 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-17 12:01:09,931 INFO L231 Difference]: Finished difference. Result has 126 places, 133 transitions, 1708 flow [2023-11-17 12:01:09,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1708, PETRI_PLACES=126, PETRI_TRANSITIONS=133} [2023-11-17 12:01:09,931 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2023-11-17 12:01:09,931 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 133 transitions, 1708 flow [2023-11-17 12:01:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:09,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:09,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:09,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 12:01:10,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:10,133 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 12:01:10,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash -889059695, now seen corresponding path program 3 times [2023-11-17 12:01:10,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:10,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767316779] [2023-11-17 12:01:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767316779] [2023-11-17 12:01:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767316779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699794240] [2023-11-17 12:01:10,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:01:10,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:10,347 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 12:01:10,364 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 12:01:10,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 12:01:10,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:10,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:01:10,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:01:10,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699794240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:10,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:10,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-17 12:01:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495726805] [2023-11-17 12:01:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:01:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:01:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-17 12:01:10,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:10,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 133 transitions, 1708 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:10,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:10,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:10,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:11,436 INFO L124 PetriNetUnfolderBase]: 2470/3451 cut-off events. [2023-11-17 12:01:11,436 INFO L125 PetriNetUnfolderBase]: For 29310/29310 co-relation queries the response was YES. [2023-11-17 12:01:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18400 conditions, 3451 events. 2470/3451 cut-off events. For 29310/29310 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14420 event pairs, 466 based on Foata normal form. 31/3213 useless extension candidates. Maximal degree in co-relation 18360. Up to 1006 conditions per place. [2023-11-17 12:01:11,458 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 139 selfloop transitions, 70 changer transitions 56/265 dead transitions. [2023-11-17 12:01:11,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 265 transitions, 3341 flow [2023-11-17 12:01:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:01:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:01:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 218 transitions. [2023-11-17 12:01:11,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20222634508348794 [2023-11-17 12:01:11,459 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 218 transitions. [2023-11-17 12:01:11,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 218 transitions. [2023-11-17 12:01:11,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:11,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 218 transitions. [2023-11-17 12:01:11,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:11,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:11,462 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:11,462 INFO L175 Difference]: Start difference. First operand has 126 places, 133 transitions, 1708 flow. Second operand 14 states and 218 transitions. [2023-11-17 12:01:11,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 265 transitions, 3341 flow [2023-11-17 12:01:11,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 265 transitions, 3113 flow, removed 80 selfloop flow, removed 12 redundant places. [2023-11-17 12:01:11,547 INFO L231 Difference]: Finished difference. Result has 123 places, 152 transitions, 2041 flow [2023-11-17 12:01:11,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2041, PETRI_PLACES=123, PETRI_TRANSITIONS=152} [2023-11-17 12:01:11,548 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 89 predicate places. [2023-11-17 12:01:11,548 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 152 transitions, 2041 flow [2023-11-17 12:01:11,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:11,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:11,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:11,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 12:01:11,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:11,749 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 12:01:11,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1821236839, now seen corresponding path program 1 times [2023-11-17 12:01:11,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370760877] [2023-11-17 12:01:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370760877] [2023-11-17 12:01:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370760877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363435261] [2023-11-17 12:01:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:11,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:11,994 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 12:01:11,995 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 12:01:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:12,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 12:01:12,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:12,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363435261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:01:12,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:01:12,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 12:01:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117937867] [2023-11-17 12:01:12,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:01:12,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:01:12,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:01:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:01:12,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:12,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 152 transitions, 2041 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:12,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:12,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:13,214 INFO L124 PetriNetUnfolderBase]: 4684/6532 cut-off events. [2023-11-17 12:01:13,214 INFO L125 PetriNetUnfolderBase]: For 51240/51240 co-relation queries the response was YES. [2023-11-17 12:01:13,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34524 conditions, 6532 events. 4684/6532 cut-off events. For 51240/51240 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30574 event pairs, 1404 based on Foata normal form. 8/6034 useless extension candidates. Maximal degree in co-relation 34487. Up to 3085 conditions per place. [2023-11-17 12:01:13,270 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 290 selfloop transitions, 22 changer transitions 23/335 dead transitions. [2023-11-17 12:01:13,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 335 transitions, 5154 flow [2023-11-17 12:01:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:01:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:01:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2023-11-17 12:01:13,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.15584415584415584 [2023-11-17 12:01:13,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 120 transitions. [2023-11-17 12:01:13,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 120 transitions. [2023-11-17 12:01:13,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:13,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 120 transitions. [2023-11-17 12:01:13,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:13,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:13,273 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:13,273 INFO L175 Difference]: Start difference. First operand has 123 places, 152 transitions, 2041 flow. Second operand 10 states and 120 transitions. [2023-11-17 12:01:13,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 335 transitions, 5154 flow [2023-11-17 12:01:13,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 335 transitions, 4942 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-11-17 12:01:13,393 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 2122 flow [2023-11-17 12:01:13,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2122, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2023-11-17 12:01:13,394 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 89 predicate places. [2023-11-17 12:01:13,394 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 2122 flow [2023-11-17 12:01:13,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:13,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:13,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:13,403 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 12:01:13,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:13,598 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 12:01:13,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 62416321, now seen corresponding path program 4 times [2023-11-17 12:01:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23418843] [2023-11-17 12:01:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23418843] [2023-11-17 12:01:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23418843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189258224] [2023-11-17 12:01:13,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:01:13,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:13,819 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 12:01:13,838 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 12:01:13,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:01:13,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:13,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 12:01:13,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:14,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:14,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 12:01:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:01:14,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:01:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189258224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:01:14,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:01:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-17 12:01:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289494386] [2023-11-17 12:01:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:14,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:01:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:01:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-17 12:01:14,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 2122 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:14,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:14,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:15,232 INFO L124 PetriNetUnfolderBase]: 4671/6413 cut-off events. [2023-11-17 12:01:15,232 INFO L125 PetriNetUnfolderBase]: For 45616/45616 co-relation queries the response was YES. [2023-11-17 12:01:15,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32476 conditions, 6413 events. 4671/6413 cut-off events. For 45616/45616 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 29236 event pairs, 719 based on Foata normal form. 98/6003 useless extension candidates. Maximal degree in co-relation 32438. Up to 1767 conditions per place. [2023-11-17 12:01:15,288 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 152 selfloop transitions, 94 changer transitions 63/309 dead transitions. [2023-11-17 12:01:15,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 309 transitions, 3932 flow [2023-11-17 12:01:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:01:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:01:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 214 transitions. [2023-11-17 12:01:15,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19851576994434136 [2023-11-17 12:01:15,290 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 214 transitions. [2023-11-17 12:01:15,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 214 transitions. [2023-11-17 12:01:15,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:15,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 214 transitions. [2023-11-17 12:01:15,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.285714285714286) internal successors, (214), 14 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:15,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:15,292 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:15,292 INFO L175 Difference]: Start difference. First operand has 123 places, 164 transitions, 2122 flow. Second operand 14 states and 214 transitions. [2023-11-17 12:01:15,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 309 transitions, 3932 flow [2023-11-17 12:01:15,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 309 transitions, 3861 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 12:01:15,370 INFO L231 Difference]: Finished difference. Result has 139 places, 190 transitions, 2612 flow [2023-11-17 12:01:15,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2612, PETRI_PLACES=139, PETRI_TRANSITIONS=190} [2023-11-17 12:01:15,371 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 105 predicate places. [2023-11-17 12:01:15,371 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 190 transitions, 2612 flow [2023-11-17 12:01:15,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:15,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:15,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:15,379 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 12:01:15,578 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,SelfDestructingSolverStorable44 [2023-11-17 12:01:15,578 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 12:01:15,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1644914651, now seen corresponding path program 5 times [2023-11-17 12:01:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:15,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721974072] [2023-11-17 12:01:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721974072] [2023-11-17 12:01:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721974072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:15,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021150368] [2023-11-17 12:01:15,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:01:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:15,796 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 12:01:15,805 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 12:01:15,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:01:15,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:15,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 12:01:15,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:16,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:16,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 12:01:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:16,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:16,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 111 [2023-11-17 12:01:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:16,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021150368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:16,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:01:16,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 8] total 18 [2023-11-17 12:01:16,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894825743] [2023-11-17 12:01:16,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:01:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:01:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-17 12:01:16,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:16,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 190 transitions, 2612 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:16,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:16,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:16,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:17,382 INFO L124 PetriNetUnfolderBase]: 4164/5772 cut-off events. [2023-11-17 12:01:17,382 INFO L125 PetriNetUnfolderBase]: For 51731/51731 co-relation queries the response was YES. [2023-11-17 12:01:17,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30930 conditions, 5772 events. 4164/5772 cut-off events. For 51731/51731 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25880 event pairs, 592 based on Foata normal form. 146/5454 useless extension candidates. Maximal degree in co-relation 30887. Up to 1541 conditions per place. [2023-11-17 12:01:17,429 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 82 selfloop transitions, 16 changer transitions 224/322 dead transitions. [2023-11-17 12:01:17,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 322 transitions, 4458 flow [2023-11-17 12:01:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:01:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:01:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2023-11-17 12:01:17,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20188902007083825 [2023-11-17 12:01:17,430 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 171 transitions. [2023-11-17 12:01:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 171 transitions. [2023-11-17 12:01:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:17,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 171 transitions. [2023-11-17 12:01:17,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:17,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 77.0) internal successors, (924), 12 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:17,432 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 77.0) internal successors, (924), 12 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:17,432 INFO L175 Difference]: Start difference. First operand has 139 places, 190 transitions, 2612 flow. Second operand 11 states and 171 transitions. [2023-11-17 12:01:17,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 322 transitions, 4458 flow [2023-11-17 12:01:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 322 transitions, 4316 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-17 12:01:17,553 INFO L231 Difference]: Finished difference. Result has 142 places, 81 transitions, 978 flow [2023-11-17 12:01:17,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=978, PETRI_PLACES=142, PETRI_TRANSITIONS=81} [2023-11-17 12:01:17,554 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 108 predicate places. [2023-11-17 12:01:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 81 transitions, 978 flow [2023-11-17 12:01:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:17,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:17,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:17,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:17,757 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,SelfDestructingSolverStorable45 [2023-11-17 12:01:17,757 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 12:01:17,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:17,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1164330534, now seen corresponding path program 1 times [2023-11-17 12:01:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:17,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666306834] [2023-11-17 12:01:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:17,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666306834] [2023-11-17 12:01:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666306834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809466093] [2023-11-17 12:01:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:17,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:17,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:17,892 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 12:01:17,897 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 12:01:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:18,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:01:18,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:18,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809466093] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:18,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:01:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-11-17 12:01:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278185138] [2023-11-17 12:01:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:01:18,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:01:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:01:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:01:18,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:01:18,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 81 transitions, 978 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:18,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:18,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:01:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:18,689 INFO L124 PetriNetUnfolderBase]: 2386/3238 cut-off events. [2023-11-17 12:01:18,690 INFO L125 PetriNetUnfolderBase]: For 25687/25687 co-relation queries the response was YES. [2023-11-17 12:01:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16698 conditions, 3238 events. 2386/3238 cut-off events. For 25687/25687 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12549 event pairs, 492 based on Foata normal form. 168/3070 useless extension candidates. Maximal degree in co-relation 16654. Up to 1928 conditions per place. [2023-11-17 12:01:18,716 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 86 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2023-11-17 12:01:18,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 1531 flow [2023-11-17 12:01:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:01:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:01:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2023-11-17 12:01:18,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14471243042671614 [2023-11-17 12:01:18,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 78 transitions. [2023-11-17 12:01:18,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 78 transitions. [2023-11-17 12:01:18,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:18,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 78 transitions. [2023-11-17 12:01:18,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:18,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:01:18,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 77.0) internal successors, (616), 8 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 12:01:18,719 INFO L175 Difference]: Start difference. First operand has 142 places, 81 transitions, 978 flow. Second operand 7 states and 78 transitions. [2023-11-17 12:01:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 108 transitions, 1531 flow [2023-11-17 12:01:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 1416 flow, removed 54 selfloop flow, removed 15 redundant places. [2023-11-17 12:01:18,767 INFO L231 Difference]: Finished difference. Result has 113 places, 83 transitions, 982 flow [2023-11-17 12:01:18,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2023-11-17 12:01:18,767 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 79 predicate places. [2023-11-17 12:01:18,767 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 982 flow [2023-11-17 12:01:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:01:18,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:18,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:01:18,773 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 12:01:18,968 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,SelfDestructingSolverStorable46 [2023-11-17 12:01:18,968 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 12:01:18,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:18,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1999397647, now seen corresponding path program 1 times [2023-11-17 12:01:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:18,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177434149] [2023-11-17 12:01:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177434149] [2023-11-17 12:01:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177434149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965625847] [2023-11-17 12:01:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:19,882 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 12:01:19,906 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 12:01:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:20,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-17 12:01:20,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:20,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:01:20,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:20,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:20,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:01:21,385 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2023-11-17 12:01:21,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 203 [2023-11-17 12:01:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:01:21,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:22,285 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse4 (+ c_~get1~0.offset .cse12)) (.cse6 (+ c_~get2~0.offset .cse12))) (let ((.cse0 (forall ((~get1~0.base Int) (~get2~0.base Int) (v_ArrVal_1198 (Array Int Int))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1198))) (let ((.cse11 (select .cse10 ~get2~0.base))) (let ((.cse8 (select .cse11 c_~get2~0.offset)) (.cse9 (select (select .cse10 c_~get3~0.base) c_~get3~0.offset))) (or (< .cse8 .cse9) (= .cse8 .cse9) (< (select (select .cse10 ~get1~0.base) .cse4) (select .cse11 .cse6))))))))) (and (or (< 0 c_~n1~0) .cse0) (forall ((~get2~0.base Int) (v_ArrVal_1198 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1198))) (let ((.cse5 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse5 c_~get2~0.offset)) (.cse2 (select (select .cse7 c_~get3~0.base) c_~get3~0.offset))) (or (< .cse1 .cse2) (= .cse1 .cse2) (forall ((~get1~0.base Int)) (let ((.cse3 (select .cse7 ~get1~0.base))) (or (< .cse2 (+ (select .cse3 c_~get1~0.offset) 1)) (< (select .cse3 .cse4) (select .cse5 .cse6)))))))))) (or .cse0 (< 0 c_~n3~0)))))) is different from false [2023-11-17 12:01:22,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:22,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 100 [2023-11-17 12:01:22,831 INFO L349 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-11-17 12:01:22,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44768 treesize of output 42233 [2023-11-17 12:01:23,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:23,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3392 treesize of output 3320 [2023-11-17 12:01:23,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:23,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3296 treesize of output 2936 [2023-11-17 12:01:23,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:23,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2912 treesize of output 2744 [2023-11-17 12:02:24,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:24,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 100 [2023-11-17 12:02:24,415 INFO L349 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-11-17 12:02:24,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13408 treesize of output 12665 [2023-11-17 12:02:24,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:24,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3392 treesize of output 3320 [2023-11-17 12:02:24,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:24,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3296 treesize of output 3128 [2023-11-17 12:02:24,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:24,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3104 treesize of output 2744 [2023-11-17 12:03:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965625847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:03:06,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:03:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 40 [2023-11-17 12:03:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563402121] [2023-11-17 12:03:06,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:03:06,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-17 12:03:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-17 12:03:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1386, Unknown=17, NotChecked=78, Total=1722 [2023-11-17 12:03:06,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:03:06,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 982 flow. Second operand has 42 states, 42 states have (on average 5.928571428571429) internal successors, (249), 42 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:06,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:06,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:03:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:11,300 INFO L124 PetriNetUnfolderBase]: 5534/7513 cut-off events. [2023-11-17 12:03:11,300 INFO L125 PetriNetUnfolderBase]: For 49611/49611 co-relation queries the response was YES. [2023-11-17 12:03:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38773 conditions, 7513 events. 5534/7513 cut-off events. For 49611/49611 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 33535 event pairs, 278 based on Foata normal form. 3/7516 useless extension candidates. Maximal degree in co-relation 38739. Up to 1775 conditions per place. [2023-11-17 12:03:11,358 INFO L140 encePairwiseOnDemand]: 56/77 looper letters, 291 selfloop transitions, 212 changer transitions 21/524 dead transitions. [2023-11-17 12:03:11,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 524 transitions, 5739 flow [2023-11-17 12:03:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-17 12:03:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-17 12:03:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 567 transitions. [2023-11-17 12:03:11,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17124735729386892 [2023-11-17 12:03:11,362 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 567 transitions. [2023-11-17 12:03:11,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 567 transitions. [2023-11-17 12:03:11,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:11,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 567 transitions. [2023-11-17 12:03:11,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 13.186046511627907) internal successors, (567), 43 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 12:03:11,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 77.0) internal successors, (3388), 44 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:11,368 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 77.0) internal successors, (3388), 44 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:11,368 INFO L175 Difference]: Start difference. First operand has 113 places, 83 transitions, 982 flow. Second operand 43 states and 567 transitions. [2023-11-17 12:03:11,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 524 transitions, 5739 flow [2023-11-17 12:03:11,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 524 transitions, 5729 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:03:11,446 INFO L231 Difference]: Finished difference. Result has 179 places, 303 transitions, 4299 flow [2023-11-17 12:03:11,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=4299, PETRI_PLACES=179, PETRI_TRANSITIONS=303} [2023-11-17 12:03:11,447 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 145 predicate places. [2023-11-17 12:03:11,447 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 303 transitions, 4299 flow [2023-11-17 12:03:11,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.928571428571429) internal successors, (249), 42 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:11,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:11,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:11,461 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 12:03:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-17 12:03:11,655 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 12:03:11,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash 930615110, now seen corresponding path program 1 times [2023-11-17 12:03:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:11,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537980003] [2023-11-17 12:03:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:11,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:03:11,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537980003] [2023-11-17 12:03:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537980003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100440811] [2023-11-17 12:03:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:11,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:11,845 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 12:03:11,848 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 12:03:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:12,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 12:03:12,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:03:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:03:12,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:03:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:03:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100440811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:03:12,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:03:12,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-11-17 12:03:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953334294] [2023-11-17 12:03:12,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:03:12,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 12:03:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 12:03:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 12:03:12,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:03:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 303 transitions, 4299 flow. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:12,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:03:12,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:14,606 INFO L124 PetriNetUnfolderBase]: 10902/14725 cut-off events. [2023-11-17 12:03:14,606 INFO L125 PetriNetUnfolderBase]: For 186239/186239 co-relation queries the response was YES. [2023-11-17 12:03:14,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99777 conditions, 14725 events. 10902/14725 cut-off events. For 186239/186239 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 72151 event pairs, 3260 based on Foata normal form. 8/14733 useless extension candidates. Maximal degree in co-relation 99716. Up to 5591 conditions per place. [2023-11-17 12:03:14,741 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 442 selfloop transitions, 123 changer transitions 69/634 dead transitions. [2023-11-17 12:03:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 634 transitions, 10175 flow [2023-11-17 12:03:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:03:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:03:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2023-11-17 12:03:14,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17012987012987013 [2023-11-17 12:03:14,742 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 131 transitions. [2023-11-17 12:03:14,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 131 transitions. [2023-11-17 12:03:14,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:14,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 131 transitions. [2023-11-17 12:03:14,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:14,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:14,743 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:14,744 INFO L175 Difference]: Start difference. First operand has 179 places, 303 transitions, 4299 flow. Second operand 10 states and 131 transitions. [2023-11-17 12:03:14,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 634 transitions, 10175 flow [2023-11-17 12:03:16,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 634 transitions, 9089 flow, removed 471 selfloop flow, removed 9 redundant places. [2023-11-17 12:03:16,179 INFO L231 Difference]: Finished difference. Result has 180 places, 350 transitions, 4651 flow [2023-11-17 12:03:16,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4651, PETRI_PLACES=180, PETRI_TRANSITIONS=350} [2023-11-17 12:03:16,179 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 146 predicate places. [2023-11-17 12:03:16,179 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 350 transitions, 4651 flow [2023-11-17 12:03:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:16,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:16,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:16,187 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 12:03:16,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-17 12:03:16,384 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 12:03:16,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1664558945, now seen corresponding path program 2 times [2023-11-17 12:03:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827775899] [2023-11-17 12:03:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:16,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:17,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:17,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827775899] [2023-11-17 12:03:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827775899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:17,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196535599] [2023-11-17 12:03:17,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:03:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:17,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:17,225 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 12:03:17,234 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 12:03:17,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 12:03:17,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:03:17,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 12:03:17,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:03:18,394 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2023-11-17 12:03:18,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 219 [2023-11-17 12:03:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:03:18,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:03:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196535599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:03:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 24 [2023-11-17 12:03:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166971171] [2023-11-17 12:03:18,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:18,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:03:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:03:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:03:18,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:03:18,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 350 transitions, 4651 flow. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:18,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:18,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:03:18,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:21,669 INFO L124 PetriNetUnfolderBase]: 11157/15123 cut-off events. [2023-11-17 12:03:21,669 INFO L125 PetriNetUnfolderBase]: For 183601/183601 co-relation queries the response was YES. [2023-11-17 12:03:21,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99313 conditions, 15123 events. 11157/15123 cut-off events. For 183601/183601 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 76094 event pairs, 2771 based on Foata normal form. 1/15124 useless extension candidates. Maximal degree in co-relation 99251. Up to 11756 conditions per place. [2023-11-17 12:03:21,817 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 400 selfloop transitions, 73 changer transitions 7/480 dead transitions. [2023-11-17 12:03:21,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 480 transitions, 7257 flow [2023-11-17 12:03:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:03:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:03:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2023-11-17 12:03:21,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17316017316017315 [2023-11-17 12:03:21,818 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 160 transitions. [2023-11-17 12:03:21,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 160 transitions. [2023-11-17 12:03:21,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:21,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 160 transitions. [2023-11-17 12:03:21,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:21,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:21,819 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:21,819 INFO L175 Difference]: Start difference. First operand has 180 places, 350 transitions, 4651 flow. Second operand 12 states and 160 transitions. [2023-11-17 12:03:21,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 480 transitions, 7257 flow [2023-11-17 12:03:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 480 transitions, 7081 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-17 12:03:22,943 INFO L231 Difference]: Finished difference. Result has 194 places, 397 transitions, 5447 flow [2023-11-17 12:03:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4510, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5447, PETRI_PLACES=194, PETRI_TRANSITIONS=397} [2023-11-17 12:03:22,944 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 160 predicate places. [2023-11-17 12:03:22,944 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 397 transitions, 5447 flow [2023-11-17 12:03:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:22,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:22,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:22,951 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 12:03:23,145 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,SelfDestructingSolverStorable49 [2023-11-17 12:03:23,145 INFO L420 AbstractCegarLoop]: === Iteration 51 === 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 12:03:23,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 731678699, now seen corresponding path program 3 times [2023-11-17 12:03:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920031645] [2023-11-17 12:03:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920031645] [2023-11-17 12:03:23,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920031645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951609583] [2023-11-17 12:03:23,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:03:23,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:23,945 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 12:03:23,968 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 12:03:24,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 12:03:24,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:03:24,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 12:03:24,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:03:24,840 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2023-11-17 12:03:24,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 199 treesize of output 211 [2023-11-17 12:03:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:03:25,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:03:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951609583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:25,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:03:25,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 24 [2023-11-17 12:03:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916680692] [2023-11-17 12:03:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:03:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:03:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:03:25,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:03:25,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 397 transitions, 5447 flow. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:25,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:25,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:03:25,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:28,249 INFO L124 PetriNetUnfolderBase]: 12140/16416 cut-off events. [2023-11-17 12:03:28,249 INFO L125 PetriNetUnfolderBase]: For 227246/227246 co-relation queries the response was YES. [2023-11-17 12:03:28,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113373 conditions, 16416 events. 12140/16416 cut-off events. For 227246/227246 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 83264 event pairs, 2864 based on Foata normal form. 1/16417 useless extension candidates. Maximal degree in co-relation 113305. Up to 12433 conditions per place. [2023-11-17 12:03:28,585 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 389 selfloop transitions, 104 changer transitions 7/500 dead transitions. [2023-11-17 12:03:28,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 500 transitions, 7817 flow [2023-11-17 12:03:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:03:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:03:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2023-11-17 12:03:28,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1645021645021645 [2023-11-17 12:03:28,587 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 152 transitions. [2023-11-17 12:03:28,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 152 transitions. [2023-11-17 12:03:28,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:28,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 152 transitions. [2023-11-17 12:03:28,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:28,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:28,588 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:28,588 INFO L175 Difference]: Start difference. First operand has 194 places, 397 transitions, 5447 flow. Second operand 12 states and 152 transitions. [2023-11-17 12:03:28,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 500 transitions, 7817 flow [2023-11-17 12:03:30,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 500 transitions, 7599 flow, removed 65 selfloop flow, removed 4 redundant places. [2023-11-17 12:03:30,097 INFO L231 Difference]: Finished difference. Result has 207 places, 456 transitions, 6654 flow [2023-11-17 12:03:30,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=5276, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6654, PETRI_PLACES=207, PETRI_TRANSITIONS=456} [2023-11-17 12:03:30,097 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 173 predicate places. [2023-11-17 12:03:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 456 transitions, 6654 flow [2023-11-17 12:03:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:30,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:30,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:30,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 12:03:30,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:30,303 INFO L420 AbstractCegarLoop]: === Iteration 52 === 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 12:03:30,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1640838183, now seen corresponding path program 4 times [2023-11-17 12:03:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019802754] [2023-11-17 12:03:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:31,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:31,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019802754] [2023-11-17 12:03:31,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019802754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:31,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574236483] [2023-11-17 12:03:31,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:03:31,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:31,082 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 12:03:31,099 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 12:03:31,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:03:31,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:03:31,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-17 12:03:31,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:03:31,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:03:31,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:31,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:31,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:32,317 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2023-11-17 12:03:32,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 219 [2023-11-17 12:03:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:03:32,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:03:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:03:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574236483] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:03:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 15] total 36 [2023-11-17 12:03:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980738978] [2023-11-17 12:03:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:03:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:03:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2023-11-17 12:03:33,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 77 [2023-11-17 12:03:33,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 456 transitions, 6654 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:33,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:33,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 77 [2023-11-17 12:03:33,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:38,555 INFO L124 PetriNetUnfolderBase]: 15685/21314 cut-off events. [2023-11-17 12:03:38,555 INFO L125 PetriNetUnfolderBase]: For 331675/331675 co-relation queries the response was YES. [2023-11-17 12:03:38,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157390 conditions, 21314 events. 15685/21314 cut-off events. For 331675/331675 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 113168 event pairs, 2056 based on Foata normal form. 1/21315 useless extension candidates. Maximal degree in co-relation 157317. Up to 9753 conditions per place. [2023-11-17 12:03:39,182 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 544 selfloop transitions, 236 changer transitions 12/792 dead transitions. [2023-11-17 12:03:39,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 792 transitions, 13156 flow [2023-11-17 12:03:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:03:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:03:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 220 transitions. [2023-11-17 12:03:39,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19047619047619047 [2023-11-17 12:03:39,183 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 220 transitions. [2023-11-17 12:03:39,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 220 transitions. [2023-11-17 12:03:39,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:39,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 220 transitions. [2023-11-17 12:03:39,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 14.666666666666666) internal successors, (220), 15 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:39,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 77.0) internal successors, (1232), 16 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:39,185 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 77.0) internal successors, (1232), 16 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:39,186 INFO L175 Difference]: Start difference. First operand has 207 places, 456 transitions, 6654 flow. Second operand 15 states and 220 transitions. [2023-11-17 12:03:39,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 792 transitions, 13156 flow [2023-11-17 12:03:41,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 792 transitions, 12738 flow, removed 205 selfloop flow, removed 3 redundant places. [2023-11-17 12:03:41,368 INFO L231 Difference]: Finished difference. Result has 227 places, 562 transitions, 9070 flow [2023-11-17 12:03:41,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6456, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9070, PETRI_PLACES=227, PETRI_TRANSITIONS=562} [2023-11-17 12:03:41,369 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 193 predicate places. [2023-11-17 12:03:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 562 transitions, 9070 flow [2023-11-17 12:03:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:03:41,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:41,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:41,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 12:03:41,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:41,572 INFO L420 AbstractCegarLoop]: === Iteration 53 === 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 12:03:41,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -580539943, now seen corresponding path program 5 times [2023-11-17 12:03:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93259125] [2023-11-17 12:03:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:42,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:42,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93259125] [2023-11-17 12:03:42,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93259125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:03:42,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745752187] [2023-11-17 12:03:42,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:03:42,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:42,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:42,378 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 12:03:42,398 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 12:03:42,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:03:42,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:03:42,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-17 12:03:42,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:03:42,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:03:42,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:42,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:42,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:03:43,681 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2023-11-17 12:03:43,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 219 [2023-11-17 12:03:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:03:43,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:03:45,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:03:45,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 129 [2023-11-17 12:03:45,085 INFO L349 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-11-17 12:03:45,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71637 treesize of output 67562 [2023-11-17 12:03:45,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:03:45,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4437 treesize of output 4333 [2023-11-17 12:03:45,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:03:45,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4309 treesize of output 4077 [2023-11-17 12:03:45,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:03:45,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4053 treesize of output 3565 [2023-11-17 12:05:41,080 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:05:41,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 129 [2023-11-17 12:05:41,141 INFO L349 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-11-17 12:05:41,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26837 treesize of output 25322 [2023-11-17 12:05:41,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:05:41,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4437 treesize of output 3949 [2023-11-17 12:05:41,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:05:41,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3925 treesize of output 3821 [2023-11-17 12:05:41,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:05:41,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3797 treesize of output 3565 [2023-11-17 12:06:32,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 12:06:32,584 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 12:06:32,585 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 12:06:32,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 12:06:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:32,787 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 12:06:32,793 INFO L158 Benchmark]: Toolchain (without parser) took 362440.55ms. Allocated memory was 248.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 198.0MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-11-17 12:06:32,793 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 170.9MB. Free memory was 121.4MB in the beginning and 121.3MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:06:32,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.06ms. Allocated memory is still 248.5MB. Free memory was 198.0MB in the beginning and 185.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 12:06:32,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.76ms. Allocated memory is still 248.5MB. Free memory was 185.4MB in the beginning and 183.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:32,793 INFO L158 Benchmark]: Boogie Preprocessor took 56.80ms. Allocated memory is still 248.5MB. Free memory was 183.3MB in the beginning and 181.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:32,793 INFO L158 Benchmark]: RCFGBuilder took 925.75ms. Allocated memory is still 248.5MB. Free memory was 181.2MB in the beginning and 194.8MB in the end (delta: -13.6MB). Peak memory consumption was 63.5MB. Max. memory is 8.0GB. [2023-11-17 12:06:32,794 INFO L158 Benchmark]: TraceAbstraction took 361041.72ms. Allocated memory was 248.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 194.3MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-11-17 12:06:32,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 170.9MB. Free memory was 121.4MB in the beginning and 121.3MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.06ms. Allocated memory is still 248.5MB. Free memory was 198.0MB in the beginning and 185.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.76ms. Allocated memory is still 248.5MB. Free memory was 185.4MB in the beginning and 183.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.80ms. Allocated memory is still 248.5MB. Free memory was 183.3MB in the beginning and 181.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 925.75ms. Allocated memory is still 248.5MB. Free memory was 181.2MB in the beginning and 194.8MB in the end (delta: -13.6MB). Peak memory consumption was 63.5MB. Max. memory is 8.0GB. * TraceAbstraction took 361041.72ms. Allocated memory was 248.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 194.3MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 45 PlacesBefore, 34 PlacesAfterwards, 47 TransitionsBefore, 35 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 1 ChoiceCompositions, 26 TotalNumberOfCompositions, 1256 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1072, independent: 1043, independent conditional: 0, independent unconditional: 1043, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 564, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 564, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1072, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 564, unknown conditional: 0, unknown unconditional: 564] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...