/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:03:19,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:03:19,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:03:19,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:03:19,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:03:19,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:03:19,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:03:19,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:03:19,595 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:03:19,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:03:19,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:03:19,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:03:19,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:03:19,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:03:19,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:03:19,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:03:19,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:03:19,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:03:19,602 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:03:19,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:03:19,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:03:19,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:03:19,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:03:19,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:03:19,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:03:19,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:03:19,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:03:19,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:03:19,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:03:19,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:03:19,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:03:19,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:03:19,797 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:03:19,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-11-17 15:03:20,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:03:20,896 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:03:20,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-11-17 15:03:20,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7319d3801/40d9f0ecfd31456789e0b5d9f8b28b6b/FLAG5642aa9ef [2023-11-17 15:03:20,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7319d3801/40d9f0ecfd31456789e0b5d9f8b28b6b [2023-11-17 15:03:20,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:03:20,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:03:20,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:03:20,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:03:20,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:03:20,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:20" (1/1) ... [2023-11-17 15:03:20,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327af80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:20, skipping insertion in model container [2023-11-17 15:03:20,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:03:20" (1/1) ... [2023-11-17 15:03:20,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:03:21,180 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-11-17 15:03:21,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:03:21,195 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:03:21,221 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-11-17 15:03:21,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:03:21,251 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:03:21,251 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:03:21,256 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:03:21,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21 WrapperNode [2023-11-17 15:03:21,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:03:21,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:03:21,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:03:21,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:03:21,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,300 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 15:03:21,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:03:21,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:03:21,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:03:21,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:03:21,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:03:21,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:03:21,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:03:21,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:03:21,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (1/1) ... [2023-11-17 15:03:21,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:03:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:21,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:03:21,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:03:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:03:21,386 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:03:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:03:21,386 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:03:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:03:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:03:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:03:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:03:21,388 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:03:21,507 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:03:21,508 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:03:21,615 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:03:21,624 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:03:21,624 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:03:21,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:03:21 BoogieIcfgContainer [2023-11-17 15:03:21,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:03:21,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:03:21,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:03:21,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:03:21,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:03:20" (1/3) ... [2023-11-17 15:03:21,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633730ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:21, skipping insertion in model container [2023-11-17 15:03:21,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:03:21" (2/3) ... [2023-11-17 15:03:21,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633730ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:03:21, skipping insertion in model container [2023-11-17 15:03:21,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:03:21" (3/3) ... [2023-11-17 15:03:21,631 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-17 15:03:21,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:03:21,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:03:21,645 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:03:21,687 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:03:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:03:21,731 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:03:21,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:21,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:03:21,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 69 transitions, 146 flow [2023-11-17 15:03:21,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:21,748 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:03:21,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:21,764 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:21,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 140 flow [2023-11-17 15:03:21,814 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-11-17 15:03:21,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:21,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 15:03:21,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 1296 [2023-11-17 15:03:23,541 INFO L134 LiptonReduction]: Checked pairs total: 1192 [2023-11-17 15:03:23,542 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-17 15:03:23,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:03:23,556 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;@50139348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:03:23,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:03:23,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:03:23,559 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-17 15:03:23,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:03:23,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:23,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:03:23,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:23,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash -425197577, now seen corresponding path program 1 times [2023-11-17 15:03:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:23,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440129867] [2023-11-17 15:03:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:23,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440129867] [2023-11-17 15:03:23,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440129867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:23,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:23,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:03:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193242887] [2023-11-17 15:03:23,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:23,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:03:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:03:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:03:23,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:23,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 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 15:03:23,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:23,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,021 INFO L124 PetriNetUnfolderBase]: 124/200 cut-off events. [2023-11-17 15:03:24,022 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:03:24,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 200 events. 124/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 587 event pairs, 24 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 406. Up to 122 conditions per place. [2023-11-17 15:03:24,025 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 23 selfloop transitions, 7 changer transitions 5/35 dead transitions. [2023-11-17 15:03:24,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 35 transitions, 149 flow [2023-11-17 15:03:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:03:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:03:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 304 transitions. [2023-11-17 15:03:24,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412213740458014 [2023-11-17 15:03:24,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 304 transitions. [2023-11-17 15:03:24,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 304 transitions. [2023-11-17 15:03:24,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 304 transitions. [2023-11-17 15:03:24,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,046 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 5 states and 304 transitions. [2023-11-17 15:03:24,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 35 transitions, 149 flow [2023-11-17 15:03:24,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:03:24,049 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-11-17 15:03:24,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-11-17 15:03:24,052 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-11-17 15:03:24,052 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-11-17 15:03:24,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 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 15:03:24,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:03:24,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -566238261, now seen corresponding path program 1 times [2023-11-17 15:03:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491456754] [2023-11-17 15:03:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491456754] [2023-11-17 15:03:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491456754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509402065] [2023-11-17 15:03:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:24,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:24,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:24,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,210 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-17 15:03:24,210 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-17 15:03:24,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 441. Up to 61 conditions per place. [2023-11-17 15:03:24,211 INFO L140 encePairwiseOnDemand]: 127/131 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-17 15:03:24,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 173 flow [2023-11-17 15:03:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:03:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:03:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-17 15:03:24,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45229007633587787 [2023-11-17 15:03:24,213 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-17 15:03:24,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-17 15:03:24,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-17 15:03:24,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,215 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 237 transitions. [2023-11-17 15:03:24,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 173 flow [2023-11-17 15:03:24,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:03:24,217 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 119 flow [2023-11-17 15:03:24,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-17 15:03:24,217 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-11-17 15:03:24,218 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 119 flow [2023-11-17 15:03:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:03:24,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash -593367787, now seen corresponding path program 1 times [2023-11-17 15:03:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591837138] [2023-11-17 15:03:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591837138] [2023-11-17 15:03:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591837138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246310185] [2023-11-17 15:03:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:24,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:24,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:24,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,373 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-17 15:03:24,373 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-17 15:03:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 721 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 740. Up to 101 conditions per place. [2023-11-17 15:03:24,377 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-17 15:03:24,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 301 flow [2023-11-17 15:03:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:03:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:03:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-11-17 15:03:24,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529262086513995 [2023-11-17 15:03:24,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-11-17 15:03:24,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-11-17 15:03:24,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-11-17 15:03:24,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,383 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,383 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 119 flow. Second operand 6 states and 356 transitions. [2023-11-17 15:03:24,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 301 flow [2023-11-17 15:03:24,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 15:03:24,387 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 203 flow [2023-11-17 15:03:24,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-11-17 15:03:24,388 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 15:03:24,388 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 203 flow [2023-11-17 15:03:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:03:24,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -593353837, now seen corresponding path program 2 times [2023-11-17 15:03:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428387683] [2023-11-17 15:03:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428387683] [2023-11-17 15:03:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428387683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:03:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141872750] [2023-11-17 15:03:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:03:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:03:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:03:24,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:24,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:24,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,555 INFO L124 PetriNetUnfolderBase]: 132/231 cut-off events. [2023-11-17 15:03:24,556 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-11-17 15:03:24,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 231 events. 132/231 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 751 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 869. Up to 99 conditions per place. [2023-11-17 15:03:24,557 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-11-17 15:03:24,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 422 flow [2023-11-17 15:03:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:03:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:03:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-11-17 15:03:24,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45038167938931295 [2023-11-17 15:03:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-11-17 15:03:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-11-17 15:03:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-11-17 15:03:24,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,563 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 203 flow. Second operand 7 states and 413 transitions. [2023-11-17 15:03:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 422 flow [2023-11-17 15:03:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 398 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-17 15:03:24,567 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 277 flow [2023-11-17 15:03:24,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-11-17 15:03:24,569 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-11-17 15:03:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 277 flow [2023-11-17 15:03:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:03:24,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1275101541, now seen corresponding path program 1 times [2023-11-17 15:03:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899144473] [2023-11-17 15:03:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899144473] [2023-11-17 15:03:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899144473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:03:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118016698] [2023-11-17 15:03:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:03:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:03:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:03:24,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:24,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:24,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,749 INFO L124 PetriNetUnfolderBase]: 168/295 cut-off events. [2023-11-17 15:03:24,749 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2023-11-17 15:03:24,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 295 events. 168/295 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 16 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1223. Up to 79 conditions per place. [2023-11-17 15:03:24,751 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-11-17 15:03:24,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 555 flow [2023-11-17 15:03:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:03:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:03:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-11-17 15:03:24,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484732824427481 [2023-11-17 15:03:24,753 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-11-17 15:03:24,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-11-17 15:03:24,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-11-17 15:03:24,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,755 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 277 flow. Second operand 8 states and 470 transitions. [2023-11-17 15:03:24,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 555 flow [2023-11-17 15:03:24,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 523 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:03:24,759 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 389 flow [2023-11-17 15:03:24,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=389, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-11-17 15:03:24,760 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-11-17 15:03:24,760 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 389 flow [2023-11-17 15:03:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:03:24,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1305502311, now seen corresponding path program 2 times [2023-11-17 15:03:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218296736] [2023-11-17 15:03:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218296736] [2023-11-17 15:03:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218296736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:03:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202877944] [2023-11-17 15:03:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:03:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:03:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:03:24,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:24,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:24,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:24,900 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-17 15:03:24,900 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2023-11-17 15:03:24,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 283 events. 160/283 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 993 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1337. Up to 69 conditions per place. [2023-11-17 15:03:24,902 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-11-17 15:03:24,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 633 flow [2023-11-17 15:03:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:03:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:03:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-11-17 15:03:24,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820065430752454 [2023-11-17 15:03:24,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-11-17 15:03:24,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-11-17 15:03:24,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:24,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-11-17 15:03:24,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,906 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 389 flow. Second operand 7 states and 411 transitions. [2023-11-17 15:03:24,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 633 flow [2023-11-17 15:03:24,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 579 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:24,911 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 429 flow [2023-11-17 15:03:24,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-17 15:03:24,912 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-11-17 15:03:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 429 flow [2023-11-17 15:03:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:24,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:03:24,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1815886077, now seen corresponding path program 3 times [2023-11-17 15:03:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582282891] [2023-11-17 15:03:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582282891] [2023-11-17 15:03:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582282891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177178048] [2023-11-17 15:03:24,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:03:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:24,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:25,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:03:25,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:03:25,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:25,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 15:03:25,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:25,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:25,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177178048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:25,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:25,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 15:03:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014635154] [2023-11-17 15:03:25,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:25,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:03:25,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:03:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 15:03:25,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:25,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:25,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:25,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:25,392 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-17 15:03:25,392 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-17 15:03:25,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 363 events. 208/363 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1283 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1839. Up to 91 conditions per place. [2023-11-17 15:03:25,395 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-17 15:03:25,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 1039 flow [2023-11-17 15:03:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:03:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:03:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 816 transitions. [2023-11-17 15:03:25,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44492911668484186 [2023-11-17 15:03:25,397 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 816 transitions. [2023-11-17 15:03:25,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 816 transitions. [2023-11-17 15:03:25,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:25,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 816 transitions. [2023-11-17 15:03:25,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.285714285714285) internal successors, (816), 14 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,406 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 131.0) internal successors, (1965), 15 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,406 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 429 flow. Second operand 14 states and 816 transitions. [2023-11-17 15:03:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 1039 flow [2023-11-17 15:03:25,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 972 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 15:03:25,413 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 748 flow [2023-11-17 15:03:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=748, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-17 15:03:25,414 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-17 15:03:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 748 flow [2023-11-17 15:03:25,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:25,415 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:25,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:25,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:25,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:25,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 173906857, now seen corresponding path program 4 times [2023-11-17 15:03:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933156221] [2023-11-17 15:03:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933156221] [2023-11-17 15:03:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933156221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123445306] [2023-11-17 15:03:25,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:03:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:25,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:25,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:03:25,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:03:25,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:25,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:03:25,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:25,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123445306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:25,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:25,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:03:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369646477] [2023-11-17 15:03:25,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:03:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:03:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:03:25,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:25,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 748 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:25,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:25,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:25,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:26,124 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-17 15:03:26,124 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2023-11-17 15:03:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 475 events. 264/475 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1706 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2665. Up to 249 conditions per place. [2023-11-17 15:03:26,126 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-17 15:03:26,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1566 flow [2023-11-17 15:03:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:03:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:03:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-11-17 15:03:26,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441793893129771 [2023-11-17 15:03:26,128 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-11-17 15:03:26,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-11-17 15:03:26,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:26,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-11-17 15:03:26,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,133 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,133 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 748 flow. Second operand 16 states and 931 transitions. [2023-11-17 15:03:26,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1566 flow [2023-11-17 15:03:26,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1187 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-11-17 15:03:26,143 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 836 flow [2023-11-17 15:03:26,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=836, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2023-11-17 15:03:26,144 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-17 15:03:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 836 flow [2023-11-17 15:03:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:26,144 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:26,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 15:03:26,349 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,SelfDestructingSolverStorable7 [2023-11-17 15:03:26,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:26,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 118604779, now seen corresponding path program 5 times [2023-11-17 15:03:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613815934] [2023-11-17 15:03:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:26,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613815934] [2023-11-17 15:03:26,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613815934] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:26,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149176630] [2023-11-17 15:03:26,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:03:26,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:26,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:26,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:26,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:03:26,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 15:03:26,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:26,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:03:26,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:26,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149176630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:26,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:26,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 15:03:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246442986] [2023-11-17 15:03:26,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:03:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:03:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:03:26,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:26,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 836 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:26,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:26,960 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-17 15:03:26,960 INFO L125 PetriNetUnfolderBase]: For 14645/14645 co-relation queries the response was YES. [2023-11-17 15:03:26,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 767 events. 418/767 cut-off events. For 14645/14645 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3409 event pairs, 42 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4345. Up to 230 conditions per place. [2023-11-17 15:03:26,964 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-17 15:03:26,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 183 transitions, 2228 flow [2023-11-17 15:03:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 15:03:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 15:03:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-11-17 15:03:26,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441360166551006 [2023-11-17 15:03:26,969 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-11-17 15:03:26,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-11-17 15:03:26,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:26,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-11-17 15:03:26,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,975 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 131.0) internal successors, (3013), 23 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:26,975 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 836 flow. Second operand 22 states and 1280 transitions. [2023-11-17 15:03:26,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 183 transitions, 2228 flow [2023-11-17 15:03:27,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 183 transitions, 2087 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:27,026 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 1567 flow [2023-11-17 15:03:27,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1567, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-11-17 15:03:27,027 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-17 15:03:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 1567 flow [2023-11-17 15:03:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:27,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:27,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:27,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1404696555, now seen corresponding path program 6 times [2023-11-17 15:03:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134449745] [2023-11-17 15:03:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:27,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:27,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134449745] [2023-11-17 15:03:27,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134449745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959410899] [2023-11-17 15:03:27,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:03:27,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:27,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:27,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:27,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:03:27,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 15:03:27,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:27,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:03:27,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:27,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959410899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:27,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:27,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 15:03:27,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396482679] [2023-11-17 15:03:27,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:27,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 15:03:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 15:03:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:03:27,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:27,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 1567 flow. Second operand has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:27,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:27,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:27,841 INFO L124 PetriNetUnfolderBase]: 618/1123 cut-off events. [2023-11-17 15:03:27,842 INFO L125 PetriNetUnfolderBase]: For 42544/42544 co-relation queries the response was YES. [2023-11-17 15:03:27,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 1123 events. 618/1123 cut-off events. For 42544/42544 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5459 event pairs, 30 based on Foata normal form. 36/1159 useless extension candidates. Maximal degree in co-relation 8313. Up to 358 conditions per place. [2023-11-17 15:03:27,850 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 71 selfloop transitions, 135 changer transitions 41/247 dead transitions. [2023-11-17 15:03:27,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 247 transitions, 3949 flow [2023-11-17 15:03:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:03:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:03:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-11-17 15:03:27,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44416171897087925 [2023-11-17 15:03:27,853 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-11-17 15:03:27,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-11-17 15:03:27,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:27,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-11-17 15:03:27,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,887 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 131.0) internal successors, (3668), 28 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,888 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 1567 flow. Second operand 27 states and 1571 transitions. [2023-11-17 15:03:27,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 247 transitions, 3949 flow [2023-11-17 15:03:27,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 247 transitions, 3594 flow, removed 169 selfloop flow, removed 4 redundant places. [2023-11-17 15:03:27,950 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 2747 flow [2023-11-17 15:03:27,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2747, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2023-11-17 15:03:27,951 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 139 predicate places. [2023-11-17 15:03:27,951 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 2747 flow [2023-11-17 15:03:27,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:27,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:27,952 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:27,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:28,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:28,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1794307131, now seen corresponding path program 7 times [2023-11-17 15:03:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818722714] [2023-11-17 15:03:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818722714] [2023-11-17 15:03:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818722714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256005819] [2023-11-17 15:03:28,247 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:03:28,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:28,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:28,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:03:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:28,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:03:28,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:28,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:03:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256005819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:28,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-17 15:03:28,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311732445] [2023-11-17 15:03:28,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:28,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:03:28,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:28,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:03:28,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:03:28,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:28,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 2747 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:28,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:28,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:28,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:28,875 INFO L124 PetriNetUnfolderBase]: 722/1315 cut-off events. [2023-11-17 15:03:28,876 INFO L125 PetriNetUnfolderBase]: For 81886/81886 co-relation queries the response was YES. [2023-11-17 15:03:28,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12295 conditions, 1315 events. 722/1315 cut-off events. For 81886/81886 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6583 event pairs, 21 based on Foata normal form. 28/1343 useless extension candidates. Maximal degree in co-relation 12220. Up to 429 conditions per place. [2023-11-17 15:03:28,886 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 63 selfloop transitions, 161 changer transitions 44/268 dead transitions. [2023-11-17 15:03:28,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 268 transitions, 5594 flow [2023-11-17 15:03:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:03:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:03:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1454 transitions. [2023-11-17 15:03:28,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443969465648855 [2023-11-17 15:03:28,889 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1454 transitions. [2023-11-17 15:03:28,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1454 transitions. [2023-11-17 15:03:28,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:28,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1454 transitions. [2023-11-17 15:03:28,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.16) internal successors, (1454), 25 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:28,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 131.0) internal successors, (3406), 26 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:28,894 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 131.0) internal successors, (3406), 26 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:28,894 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 2747 flow. Second operand 25 states and 1454 transitions. [2023-11-17 15:03:28,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 268 transitions, 5594 flow [2023-11-17 15:03:29,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 268 transitions, 4193 flow, removed 671 selfloop flow, removed 11 redundant places. [2023-11-17 15:03:29,024 INFO L231 Difference]: Finished difference. Result has 180 places, 193 transitions, 3272 flow [2023-11-17 15:03:29,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3272, PETRI_PLACES=180, PETRI_TRANSITIONS=193} [2023-11-17 15:03:29,025 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 162 predicate places. [2023-11-17 15:03:29,025 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 193 transitions, 3272 flow [2023-11-17 15:03:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:29,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:29,026 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:29,032 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 15:03:29,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 15:03:29,231 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:29,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -686459577, now seen corresponding path program 8 times [2023-11-17 15:03:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:29,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970521422] [2023-11-17 15:03:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970521422] [2023-11-17 15:03:29,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970521422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320899763] [2023-11-17 15:03:29,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:03:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:29,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:29,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:03:29,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:03:29,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:29,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 15:03:29,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:29,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:03:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320899763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:03:29,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:03:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2023-11-17 15:03:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125994284] [2023-11-17 15:03:29,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:03:29,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 15:03:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 15:03:29,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:03:29,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 131 [2023-11-17 15:03:29,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 193 transitions, 3272 flow. Second operand has 27 states, 27 states have (on average 54.407407407407405) internal successors, (1469), 27 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:29,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:29,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 131 [2023-11-17 15:03:29,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:30,164 INFO L124 PetriNetUnfolderBase]: 762/1383 cut-off events. [2023-11-17 15:03:30,165 INFO L125 PetriNetUnfolderBase]: For 76371/76371 co-relation queries the response was YES. [2023-11-17 15:03:30,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12399 conditions, 1383 events. 762/1383 cut-off events. For 76371/76371 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6906 event pairs, 28 based on Foata normal form. 12/1395 useless extension candidates. Maximal degree in co-relation 12316. Up to 449 conditions per place. [2023-11-17 15:03:30,176 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 70 selfloop transitions, 173 changer transitions 50/293 dead transitions. [2023-11-17 15:03:30,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 293 transitions, 5500 flow [2023-11-17 15:03:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 15:03:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 15:03:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1624 transitions. [2023-11-17 15:03:30,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44274809160305345 [2023-11-17 15:03:30,179 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1624 transitions. [2023-11-17 15:03:30,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1624 transitions. [2023-11-17 15:03:30,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:30,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1624 transitions. [2023-11-17 15:03:30,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 131.0) internal successors, (3799), 29 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,185 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 131.0) internal successors, (3799), 29 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,185 INFO L175 Difference]: Start difference. First operand has 180 places, 193 transitions, 3272 flow. Second operand 28 states and 1624 transitions. [2023-11-17 15:03:30,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 293 transitions, 5500 flow [2023-11-17 15:03:30,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 293 transitions, 5015 flow, removed 213 selfloop flow, removed 8 redundant places. [2023-11-17 15:03:30,334 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 3646 flow [2023-11-17 15:03:30,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3646, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2023-11-17 15:03:30,334 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 187 predicate places. [2023-11-17 15:03:30,334 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 3646 flow [2023-11-17 15:03:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 54.407407407407405) internal successors, (1469), 27 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:30,335 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:30,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:30,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:30,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:03:30,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1978860057, now seen corresponding path program 9 times [2023-11-17 15:03:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409621798] [2023-11-17 15:03:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:30,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409621798] [2023-11-17 15:03:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409621798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:03:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560967889] [2023-11-17 15:03:30,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:03:30,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:30,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:03:30,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:03:30,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:03:30,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-17 15:03:30,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:03:30,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 15:03:30,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:03:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:30,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:03:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560967889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:03:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-17 15:03:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114624026] [2023-11-17 15:03:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:03:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:03:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:03:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 131 [2023-11-17 15:03:30,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 3646 flow. Second operand has 8 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:30,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 131 [2023-11-17 15:03:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:31,192 INFO L124 PetriNetUnfolderBase]: 1744/2916 cut-off events. [2023-11-17 15:03:31,192 INFO L125 PetriNetUnfolderBase]: For 161006/161006 co-relation queries the response was YES. [2023-11-17 15:03:31,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22980 conditions, 2916 events. 1744/2916 cut-off events. For 161006/161006 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16533 event pairs, 58 based on Foata normal form. 268/3184 useless extension candidates. Maximal degree in co-relation 22899. Up to 1241 conditions per place. [2023-11-17 15:03:31,213 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 672/672 dead transitions. [2023-11-17 15:03:31,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 672 transitions, 12366 flow [2023-11-17 15:03:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:03:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:03:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 513 transitions. [2023-11-17 15:03:31,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48950381679389315 [2023-11-17 15:03:31,215 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 513 transitions. [2023-11-17 15:03:31,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 513 transitions. [2023-11-17 15:03:31,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:31,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 513 transitions. [2023-11-17 15:03:31,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:31,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:31,225 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:31,225 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 3646 flow. Second operand 8 states and 513 transitions. [2023-11-17 15:03:31,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 672 transitions, 12366 flow [2023-11-17 15:03:31,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 672 transitions, 10893 flow, removed 166 selfloop flow, removed 28 redundant places. [2023-11-17 15:03:31,418 INFO L231 Difference]: Finished difference. Result has 182 places, 0 transitions, 0 flow [2023-11-17 15:03:31,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=182, PETRI_TRANSITIONS=0} [2023-11-17 15:03:31,419 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 164 predicate places. [2023-11-17 15:03:31,419 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 0 transitions, 0 flow [2023-11-17 15:03:31,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:03:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:03:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:03:31,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:03:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:03:31,625 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1] [2023-11-17 15:03:31,627 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:03:31,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:03:31,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:03:31 BasicIcfg [2023-11-17 15:03:31,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:03:31,630 INFO L158 Benchmark]: Toolchain (without parser) took 10700.54ms. Allocated memory was 187.7MB in the beginning and 377.5MB in the end (delta: 189.8MB). Free memory was 145.8MB in the beginning and 286.6MB in the end (delta: -140.8MB). Peak memory consumption was 231.6MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,630 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:03:31,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.55ms. Allocated memory is still 187.7MB. Free memory was 145.8MB in the beginning and 126.2MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.72ms. Allocated memory is still 187.7MB. Free memory was 126.2MB in the beginning and 124.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,631 INFO L158 Benchmark]: Boogie Preprocessor took 30.02ms. Allocated memory is still 187.7MB. Free memory was 124.5MB in the beginning and 123.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,631 INFO L158 Benchmark]: RCFGBuilder took 294.42ms. Allocated memory is still 187.7MB. Free memory was 122.7MB in the beginning and 110.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,631 INFO L158 Benchmark]: TraceAbstraction took 10002.58ms. Allocated memory was 187.7MB in the beginning and 377.5MB in the end (delta: 189.8MB). Free memory was 110.2MB in the beginning and 286.6MB in the end (delta: -176.4MB). Peak memory consumption was 196.0MB. Max. memory is 8.0GB. [2023-11-17 15:03:31,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 326.55ms. Allocated memory is still 187.7MB. Free memory was 145.8MB in the beginning and 126.2MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.72ms. Allocated memory is still 187.7MB. Free memory was 126.2MB in the beginning and 124.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.02ms. Allocated memory is still 187.7MB. Free memory was 124.5MB in the beginning and 123.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.42ms. Allocated memory is still 187.7MB. Free memory was 122.7MB in the beginning and 110.9MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 10002.58ms. Allocated memory was 187.7MB in the beginning and 377.5MB in the end (delta: 189.8MB). Free memory was 110.2MB in the beginning and 286.6MB in the end (delta: -176.4MB). Peak memory consumption was 196.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1045, independent: 1015, independent conditional: 0, independent unconditional: 1015, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 28, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1045, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 870, unknown conditional: 0, unknown unconditional: 870] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.9s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1214 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1214 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1670 IncrementalHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 0 mSDtfsCounter, 1670 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3646occurred in iteration=12, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1277 SizeOfPredicates, 34 NumberOfNonLiveVariables, 973 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 57/203 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:03:31,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...