/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:25:24,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:25:24,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:25:24,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:25:24,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:25:24,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:25:24,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:25:24,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:25:24,290 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:25:24,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:25:24,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:25:24,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:25:24,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:25:24,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:25:24,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:25:24,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:25:24,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:25:24,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:25:24,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:25:24,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:25:24,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:25:24,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:25:24,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:25:24,295 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:25:24,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:25:24,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:25:24,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:25:24,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:25:24,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:25:24,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:25:24,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:25:24,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:25:24,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:25:24,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:25:24,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:25:24,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:25:24,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:25:24,544 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:25:24,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2023-11-17 16:25:25,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:25:26,068 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:25:26,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2023-11-17 16:25:26,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c29872c/389fa72af6d64b648cda3287d7db6133/FLAG3dbffa33f [2023-11-17 16:25:26,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c29872c/389fa72af6d64b648cda3287d7db6133 [2023-11-17 16:25:26,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:25:26,107 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:25:26,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:25:26,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:25:26,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:25:26,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1830ac57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26, skipping insertion in model container [2023-11-17 16:25:26,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,147 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:25:26,298 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2664,2677] [2023-11-17 16:25:26,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:25:26,312 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:25:26,334 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c[2664,2677] [2023-11-17 16:25:26,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:25:26,342 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:25:26,342 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:25:26,349 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:25:26,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26 WrapperNode [2023-11-17 16:25:26,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:25:26,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:25:26,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:25:26,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:25:26,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,394 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 122 [2023-11-17 16:25:26,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:25:26,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:25:26,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:25:26,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:25:26,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:25:26,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:25:26,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:25:26,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:25:26,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (1/1) ... [2023-11-17 16:25:26,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:25:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:26,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:25:26,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:25:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:25:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:25:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:25:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:25:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:25:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:25:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:25:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:25:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:25:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:25:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:25:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:25:26,593 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:25:26,682 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:25:26,684 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:25:26,955 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:25:27,004 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:25:27,004 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 16:25:27,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:25:27 BoogieIcfgContainer [2023-11-17 16:25:27,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:25:27,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:25:27,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:25:27,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:25:27,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:25:26" (1/3) ... [2023-11-17 16:25:27,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37686dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:25:27, skipping insertion in model container [2023-11-17 16:25:27,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:26" (2/3) ... [2023-11-17 16:25:27,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37686dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:25:27, skipping insertion in model container [2023-11-17 16:25:27,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:25:27" (3/3) ... [2023-11-17 16:25:27,014 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2023-11-17 16:25:27,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:25:27,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:25:27,032 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:25:27,164 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 16:25:27,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 139 transitions, 306 flow [2023-11-17 16:25:27,293 INFO L124 PetriNetUnfolderBase]: 10/135 cut-off events. [2023-11-17 16:25:27,294 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:25:27,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 135 events. 10/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-17 16:25:27,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 139 transitions, 306 flow [2023-11-17 16:25:27,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 122 transitions, 268 flow [2023-11-17 16:25:27,316 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:25:27,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 122 transitions, 268 flow [2023-11-17 16:25:27,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 122 transitions, 268 flow [2023-11-17 16:25:27,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 122 transitions, 268 flow [2023-11-17 16:25:27,400 INFO L124 PetriNetUnfolderBase]: 10/122 cut-off events. [2023-11-17 16:25:27,400 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:25:27,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 10/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-17 16:25:27,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-11-17 16:25:30,525 INFO L134 LiptonReduction]: Checked pairs total: 3272 [2023-11-17 16:25:30,525 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-17 16:25:30,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:25:30,544 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;@59734d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:25:30,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 16:25:30,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:25:30,550 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-11-17 16:25:30,550 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:25:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:30,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:30,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:30,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -527290099, now seen corresponding path program 1 times [2023-11-17 16:25:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:30,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314918701] [2023-11-17 16:25:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314918701] [2023-11-17 16:25:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314918701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:25:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308710334] [2023-11-17 16:25:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:25:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:25:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:25:31,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 242 [2023-11-17 16:25:31,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:31,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 242 [2023-11-17 16:25:31,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:31,300 INFO L124 PetriNetUnfolderBase]: 1680/2288 cut-off events. [2023-11-17 16:25:31,300 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-11-17 16:25:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4806 conditions, 2288 events. 1680/2288 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8188 event pairs, 624 based on Foata normal form. 1/1777 useless extension candidates. Maximal degree in co-relation 3668. Up to 1345 conditions per place. [2023-11-17 16:25:31,344 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 47 selfloop transitions, 3 changer transitions 3/53 dead transitions. [2023-11-17 16:25:31,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 257 flow [2023-11-17 16:25:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:25:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:25:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-17 16:25:31,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647382920110193 [2023-11-17 16:25:31,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-17 16:25:31,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-17 16:25:31,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:31,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-17 16:25:31,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,375 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 410 transitions. [2023-11-17 16:25:31,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 257 flow [2023-11-17 16:25:31,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 16:25:31,384 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 89 flow [2023-11-17 16:25:31,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-17 16:25:31,389 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-11-17 16:25:31,389 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 89 flow [2023-11-17 16:25:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:31,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:25:31,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:31,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -114306080, now seen corresponding path program 1 times [2023-11-17 16:25:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114065102] [2023-11-17 16:25:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114065102] [2023-11-17 16:25:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114065102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:25:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056009079] [2023-11-17 16:25:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:25:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:25:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:25:31,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 242 [2023-11-17 16:25:31,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:31,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:31,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 242 [2023-11-17 16:25:31,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:32,043 INFO L124 PetriNetUnfolderBase]: 2083/2891 cut-off events. [2023-11-17 16:25:32,044 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-11-17 16:25:32,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 2891 events. 2083/2891 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11575 event pairs, 710 based on Foata normal form. 202/3093 useless extension candidates. Maximal degree in co-relation 2218. Up to 1464 conditions per place. [2023-11-17 16:25:32,061 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 62 selfloop transitions, 4 changer transitions 17/83 dead transitions. [2023-11-17 16:25:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 83 transitions, 385 flow [2023-11-17 16:25:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2023-11-17 16:25:32,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991735537190083 [2023-11-17 16:25:32,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2023-11-17 16:25:32,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2023-11-17 16:25:32,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:32,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2023-11-17 16:25:32,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,071 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 89 flow. Second operand 5 states and 604 transitions. [2023-11-17 16:25:32,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 83 transitions, 385 flow [2023-11-17 16:25:32,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 83 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:32,075 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 123 flow [2023-11-17 16:25:32,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-17 16:25:32,076 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-17 16:25:32,076 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 123 flow [2023-11-17 16:25:32,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:32,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:32,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:25:32,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:32,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1541703220, now seen corresponding path program 2 times [2023-11-17 16:25:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898535271] [2023-11-17 16:25:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898535271] [2023-11-17 16:25:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898535271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257670554] [2023-11-17 16:25:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:32,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:32,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:32,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:32,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:32,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:32,592 INFO L124 PetriNetUnfolderBase]: 2610/3676 cut-off events. [2023-11-17 16:25:32,592 INFO L125 PetriNetUnfolderBase]: For 4132/4132 co-relation queries the response was YES. [2023-11-17 16:25:32,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10248 conditions, 3676 events. 2610/3676 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15663 event pairs, 940 based on Foata normal form. 162/3838 useless extension candidates. Maximal degree in co-relation 4472. Up to 1920 conditions per place. [2023-11-17 16:25:32,617 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 72 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-17 16:25:32,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 75 transitions, 426 flow [2023-11-17 16:25:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2023-11-17 16:25:32,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175619834710744 [2023-11-17 16:25:32,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2023-11-17 16:25:32,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2023-11-17 16:25:32,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:32,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2023-11-17 16:25:32,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,624 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 123 flow. Second operand 4 states and 501 transitions. [2023-11-17 16:25:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 75 transitions, 426 flow [2023-11-17 16:25:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 75 transitions, 401 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:32,629 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 146 flow [2023-11-17 16:25:32,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-17 16:25:32,630 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-11-17 16:25:32,630 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 146 flow [2023-11-17 16:25:32,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:32,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:32,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:25:32,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:32,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1973834413, now seen corresponding path program 1 times [2023-11-17 16:25:32,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:32,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361748563] [2023-11-17 16:25:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:32,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:32,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361748563] [2023-11-17 16:25:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361748563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768009024] [2023-11-17 16:25:32,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:32,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:32,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:32,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:32,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:32,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:33,158 INFO L124 PetriNetUnfolderBase]: 2950/4138 cut-off events. [2023-11-17 16:25:33,158 INFO L125 PetriNetUnfolderBase]: For 5226/5226 co-relation queries the response was YES. [2023-11-17 16:25:33,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 4138 events. 2950/4138 cut-off events. For 5226/5226 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17809 event pairs, 894 based on Foata normal form. 122/4260 useless extension candidates. Maximal degree in co-relation 3695. Up to 2752 conditions per place. [2023-11-17 16:25:33,180 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 61 selfloop transitions, 4 changer transitions 10/75 dead transitions. [2023-11-17 16:25:33,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 443 flow [2023-11-17 16:25:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-11-17 16:25:33,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518595041322314 [2023-11-17 16:25:33,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-11-17 16:25:33,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-11-17 16:25:33,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:33,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-11-17 16:25:33,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,186 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 146 flow. Second operand 4 states and 502 transitions. [2023-11-17 16:25:33,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 443 flow [2023-11-17 16:25:33,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 434 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:33,190 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 174 flow [2023-11-17 16:25:33,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-17 16:25:33,191 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-17 16:25:33,191 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 174 flow [2023-11-17 16:25:33,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:33,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:33,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:25:33,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:33,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1930217321, now seen corresponding path program 2 times [2023-11-17 16:25:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972708125] [2023-11-17 16:25:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972708125] [2023-11-17 16:25:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972708125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:33,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:25:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62364200] [2023-11-17 16:25:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:33,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:25:33,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:25:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:25:33,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 242 [2023-11-17 16:25:33,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:33,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 242 [2023-11-17 16:25:33,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:33,752 INFO L124 PetriNetUnfolderBase]: 3092/4328 cut-off events. [2023-11-17 16:25:33,753 INFO L125 PetriNetUnfolderBase]: For 9045/9045 co-relation queries the response was YES. [2023-11-17 16:25:33,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 4328 events. 3092/4328 cut-off events. For 9045/9045 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18254 event pairs, 1835 based on Foata normal form. 16/4344 useless extension candidates. Maximal degree in co-relation 6276. Up to 3580 conditions per place. [2023-11-17 16:25:33,788 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 57 selfloop transitions, 7 changer transitions 11/75 dead transitions. [2023-11-17 16:25:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 490 flow [2023-11-17 16:25:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2023-11-17 16:25:33,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48512396694214877 [2023-11-17 16:25:33,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2023-11-17 16:25:33,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2023-11-17 16:25:33,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:33,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2023-11-17 16:25:33,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,797 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,797 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 174 flow. Second operand 5 states and 587 transitions. [2023-11-17 16:25:33,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 490 flow [2023-11-17 16:25:33,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:33,806 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 223 flow [2023-11-17 16:25:33,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-17 16:25:33,809 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-11-17 16:25:33,809 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 223 flow [2023-11-17 16:25:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:33,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:25:33,810 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:33,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1822124311, now seen corresponding path program 3 times [2023-11-17 16:25:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064380295] [2023-11-17 16:25:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:33,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:33,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064380295] [2023-11-17 16:25:33,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064380295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944730381] [2023-11-17 16:25:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:33,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:33,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:33,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:33,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:33,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:34,370 INFO L124 PetriNetUnfolderBase]: 3445/4809 cut-off events. [2023-11-17 16:25:34,371 INFO L125 PetriNetUnfolderBase]: For 12587/12587 co-relation queries the response was YES. [2023-11-17 16:25:34,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17490 conditions, 4809 events. 3445/4809 cut-off events. For 12587/12587 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20863 event pairs, 1685 based on Foata normal form. 152/4961 useless extension candidates. Maximal degree in co-relation 8546. Up to 3328 conditions per place. [2023-11-17 16:25:34,402 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 71 selfloop transitions, 13 changer transitions 1/85 dead transitions. [2023-11-17 16:25:34,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 665 flow [2023-11-17 16:25:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-11-17 16:25:34,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134297520661157 [2023-11-17 16:25:34,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-11-17 16:25:34,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-11-17 16:25:34,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:34,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-11-17 16:25:34,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,408 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 223 flow. Second operand 4 states and 497 transitions. [2023-11-17 16:25:34,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 665 flow [2023-11-17 16:25:34,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 85 transitions, 631 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:34,423 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 354 flow [2023-11-17 16:25:34,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-17 16:25:34,423 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-17 16:25:34,424 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 354 flow [2023-11-17 16:25:34,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:34,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:34,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:25:34,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:34,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 788699484, now seen corresponding path program 3 times [2023-11-17 16:25:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023635091] [2023-11-17 16:25:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:34,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023635091] [2023-11-17 16:25:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023635091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:34,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182435796] [2023-11-17 16:25:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:34,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:34,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:34,941 INFO L124 PetriNetUnfolderBase]: 3741/5201 cut-off events. [2023-11-17 16:25:34,941 INFO L125 PetriNetUnfolderBase]: For 18058/18058 co-relation queries the response was YES. [2023-11-17 16:25:34,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20941 conditions, 5201 events. 3741/5201 cut-off events. For 18058/18058 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22594 event pairs, 2003 based on Foata normal form. 96/5297 useless extension candidates. Maximal degree in co-relation 9618. Up to 4138 conditions per place. [2023-11-17 16:25:34,980 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 68 selfloop transitions, 21 changer transitions 1/90 dead transitions. [2023-11-17 16:25:34,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 808 flow [2023-11-17 16:25:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-11-17 16:25:34,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082644628099173 [2023-11-17 16:25:34,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-11-17 16:25:34,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-11-17 16:25:34,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:34,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-11-17 16:25:34,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,986 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:34,986 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 354 flow. Second operand 4 states and 492 transitions. [2023-11-17 16:25:34,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 808 flow [2023-11-17 16:25:35,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 90 transitions, 754 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:35,003 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 514 flow [2023-11-17 16:25:35,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-11-17 16:25:35,004 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-11-17 16:25:35,004 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 514 flow [2023-11-17 16:25:35,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:35,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:35,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:25:35,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:35,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash 605445178, now seen corresponding path program 4 times [2023-11-17 16:25:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995021950] [2023-11-17 16:25:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995021950] [2023-11-17 16:25:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995021950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:35,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:35,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028917397] [2023-11-17 16:25:35,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:35,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:35,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:35,651 INFO L124 PetriNetUnfolderBase]: 3677/5025 cut-off events. [2023-11-17 16:25:35,651 INFO L125 PetriNetUnfolderBase]: For 17378/17378 co-relation queries the response was YES. [2023-11-17 16:25:35,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21758 conditions, 5025 events. 3677/5025 cut-off events. For 17378/17378 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21605 event pairs, 1031 based on Foata normal form. 96/5121 useless extension candidates. Maximal degree in co-relation 9766. Up to 3366 conditions per place. [2023-11-17 16:25:35,679 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 74 selfloop transitions, 15 changer transitions 10/99 dead transitions. [2023-11-17 16:25:35,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 99 transitions, 908 flow [2023-11-17 16:25:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 498 transitions. [2023-11-17 16:25:35,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144628099173554 [2023-11-17 16:25:35,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 498 transitions. [2023-11-17 16:25:35,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 498 transitions. [2023-11-17 16:25:35,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:35,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 498 transitions. [2023-11-17 16:25:35,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,684 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,685 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 514 flow. Second operand 4 states and 498 transitions. [2023-11-17 16:25:35,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 99 transitions, 908 flow [2023-11-17 16:25:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:35,697 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 577 flow [2023-11-17 16:25:35,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=577, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2023-11-17 16:25:35,697 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-17 16:25:35,698 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 577 flow [2023-11-17 16:25:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:35,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:35,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:25:35,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:35,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash 364262899, now seen corresponding path program 4 times [2023-11-17 16:25:35,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:35,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110706163] [2023-11-17 16:25:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:35,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110706163] [2023-11-17 16:25:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110706163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:35,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:25:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527700658] [2023-11-17 16:25:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:25:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:25:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:25:35,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 242 [2023-11-17 16:25:35,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:35,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 242 [2023-11-17 16:25:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:36,323 INFO L124 PetriNetUnfolderBase]: 3975/5332 cut-off events. [2023-11-17 16:25:36,323 INFO L125 PetriNetUnfolderBase]: For 25938/25938 co-relation queries the response was YES. [2023-11-17 16:25:36,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23920 conditions, 5332 events. 3975/5332 cut-off events. For 25938/25938 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21653 event pairs, 1555 based on Foata normal form. 16/5348 useless extension candidates. Maximal degree in co-relation 18644. Up to 4009 conditions per place. [2023-11-17 16:25:36,358 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 78 selfloop transitions, 17 changer transitions 9/104 dead transitions. [2023-11-17 16:25:36,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 104 transitions, 1020 flow [2023-11-17 16:25:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 585 transitions. [2023-11-17 16:25:36,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834710743801653 [2023-11-17 16:25:36,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 585 transitions. [2023-11-17 16:25:36,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 585 transitions. [2023-11-17 16:25:36,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:36,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 585 transitions. [2023-11-17 16:25:36,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,366 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 577 flow. Second operand 5 states and 585 transitions. [2023-11-17 16:25:36,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 104 transitions, 1020 flow [2023-11-17 16:25:36,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 104 transitions, 1006 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:36,388 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 708 flow [2023-11-17 16:25:36,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=708, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2023-11-17 16:25:36,389 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-11-17 16:25:36,389 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 708 flow [2023-11-17 16:25:36,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:36,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:25:36,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1060337343, now seen corresponding path program 5 times [2023-11-17 16:25:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445517405] [2023-11-17 16:25:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445517405] [2023-11-17 16:25:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445517405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:36,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:36,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082819420] [2023-11-17 16:25:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:36,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:36,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:36,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:36,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:37,050 INFO L124 PetriNetUnfolderBase]: 4082/5575 cut-off events. [2023-11-17 16:25:37,051 INFO L125 PetriNetUnfolderBase]: For 33245/33245 co-relation queries the response was YES. [2023-11-17 16:25:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 5575 events. 4082/5575 cut-off events. For 33245/33245 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23908 event pairs, 1597 based on Foata normal form. 156/5731 useless extension candidates. Maximal degree in co-relation 21047. Up to 3715 conditions per place. [2023-11-17 16:25:37,099 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 92 selfloop transitions, 14 changer transitions 1/107 dead transitions. [2023-11-17 16:25:37,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 107 transitions, 1094 flow [2023-11-17 16:25:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 499 transitions. [2023-11-17 16:25:37,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515495867768595 [2023-11-17 16:25:37,102 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 499 transitions. [2023-11-17 16:25:37,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 499 transitions. [2023-11-17 16:25:37,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:37,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 499 transitions. [2023-11-17 16:25:37,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:37,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:37,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:37,105 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 708 flow. Second operand 4 states and 499 transitions. [2023-11-17 16:25:37,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 107 transitions, 1094 flow [2023-11-17 16:25:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 1056 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:37,184 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 717 flow [2023-11-17 16:25:37,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=717, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2023-11-17 16:25:37,185 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-17 16:25:37,185 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 717 flow [2023-11-17 16:25:37,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:37,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:37,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:37,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:25:37,186 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:37,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:37,186 INFO L85 PathProgramCache]: Analyzing trace with hash 540527041, now seen corresponding path program 6 times [2023-11-17 16:25:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809240889] [2023-11-17 16:25:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:37,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:37,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:37,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809240889] [2023-11-17 16:25:37,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809240889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:37,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:37,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185495586] [2023-11-17 16:25:37,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:37,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:37,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:37,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:37,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 717 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:37,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:37,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:37,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:38,160 INFO L124 PetriNetUnfolderBase]: 5628/7817 cut-off events. [2023-11-17 16:25:38,160 INFO L125 PetriNetUnfolderBase]: For 61203/61203 co-relation queries the response was YES. [2023-11-17 16:25:38,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37704 conditions, 7817 events. 5628/7817 cut-off events. For 61203/61203 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 36670 event pairs, 2212 based on Foata normal form. 408/8225 useless extension candidates. Maximal degree in co-relation 30041. Up to 5172 conditions per place. [2023-11-17 16:25:38,233 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 136 selfloop transitions, 6 changer transitions 6/148 dead transitions. [2023-11-17 16:25:38,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 148 transitions, 1837 flow [2023-11-17 16:25:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-11-17 16:25:38,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134297520661157 [2023-11-17 16:25:38,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-11-17 16:25:38,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-11-17 16:25:38,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:38,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-11-17 16:25:38,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:38,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:38,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:38,239 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 717 flow. Second operand 4 states and 497 transitions. [2023-11-17 16:25:38,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 148 transitions, 1837 flow [2023-11-17 16:25:38,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 148 transitions, 1770 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:38,276 INFO L231 Difference]: Finished difference. Result has 66 places, 74 transitions, 839 flow [2023-11-17 16:25:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=839, PETRI_PLACES=66, PETRI_TRANSITIONS=74} [2023-11-17 16:25:38,277 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2023-11-17 16:25:38,278 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 74 transitions, 839 flow [2023-11-17 16:25:38,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:38,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:38,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:25:38,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:38,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1304390355, now seen corresponding path program 7 times [2023-11-17 16:25:38,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:38,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429863188] [2023-11-17 16:25:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429863188] [2023-11-17 16:25:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429863188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:38,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:25:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594647664] [2023-11-17 16:25:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:38,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:38,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:38,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 74 transitions, 839 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:38,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:38,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:38,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:39,349 INFO L124 PetriNetUnfolderBase]: 5798/7899 cut-off events. [2023-11-17 16:25:39,350 INFO L125 PetriNetUnfolderBase]: For 55485/55485 co-relation queries the response was YES. [2023-11-17 16:25:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43330 conditions, 7899 events. 5798/7899 cut-off events. For 55485/55485 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 35825 event pairs, 1726 based on Foata normal form. 304/8203 useless extension candidates. Maximal degree in co-relation 34045. Up to 5244 conditions per place. [2023-11-17 16:25:39,416 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 92 selfloop transitions, 17 changer transitions 5/114 dead transitions. [2023-11-17 16:25:39,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 114 transitions, 1400 flow [2023-11-17 16:25:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-11-17 16:25:39,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-11-17 16:25:39,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-11-17 16:25:39,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-11-17 16:25:39,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:39,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-11-17 16:25:39,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,422 INFO L175 Difference]: Start difference. First operand has 66 places, 74 transitions, 839 flow. Second operand 4 states and 495 transitions. [2023-11-17 16:25:39,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 114 transitions, 1400 flow [2023-11-17 16:25:39,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 1331 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:39,471 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 885 flow [2023-11-17 16:25:39,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=885, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2023-11-17 16:25:39,472 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-11-17 16:25:39,472 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 885 flow [2023-11-17 16:25:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:39,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 16:25:39,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:39,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -949528942, now seen corresponding path program 1 times [2023-11-17 16:25:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910807400] [2023-11-17 16:25:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910807400] [2023-11-17 16:25:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910807400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867845440] [2023-11-17 16:25:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:39,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:39,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:39,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:39,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:25:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:39,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:39,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:39,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867845440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:39,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-11-17 16:25:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157883002] [2023-11-17 16:25:39,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:25:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:25:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:25:39,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 242 [2023-11-17 16:25:39,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 885 flow. Second operand has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:39,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:39,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 242 [2023-11-17 16:25:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:41,340 INFO L124 PetriNetUnfolderBase]: 7249/9860 cut-off events. [2023-11-17 16:25:41,340 INFO L125 PetriNetUnfolderBase]: For 76396/76396 co-relation queries the response was YES. [2023-11-17 16:25:41,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54003 conditions, 9860 events. 7249/9860 cut-off events. For 76396/76396 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 46125 event pairs, 2563 based on Foata normal form. 214/10074 useless extension candidates. Maximal degree in co-relation 44996. Up to 5955 conditions per place. [2023-11-17 16:25:41,424 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 160 selfloop transitions, 34 changer transitions 7/201 dead transitions. [2023-11-17 16:25:41,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 201 transitions, 2364 flow [2023-11-17 16:25:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:25:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:25:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 947 transitions. [2023-11-17 16:25:41,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48915289256198347 [2023-11-17 16:25:41,428 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 947 transitions. [2023-11-17 16:25:41,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 947 transitions. [2023-11-17 16:25:41,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:41,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 947 transitions. [2023-11-17 16:25:41,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:41,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:41,434 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:41,434 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 885 flow. Second operand 8 states and 947 transitions. [2023-11-17 16:25:41,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 201 transitions, 2364 flow [2023-11-17 16:25:41,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 201 transitions, 2340 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:41,498 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 1117 flow [2023-11-17 16:25:41,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2023-11-17 16:25:41,500 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-11-17 16:25:41,500 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 1117 flow [2023-11-17 16:25:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:41,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:41,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:41,510 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 16:25:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:25:41,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:41,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2010425236, now seen corresponding path program 2 times [2023-11-17 16:25:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969123679] [2023-11-17 16:25:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:41,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:41,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969123679] [2023-11-17 16:25:41,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969123679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:41,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831950276] [2023-11-17 16:25:41,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:25:41,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:41,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:41,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:25:42,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:42,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:42,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:42,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:42,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831950276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:42,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:42,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-11-17 16:25:42,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528649855] [2023-11-17 16:25:42,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:42,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:25:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:25:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:25:42,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-11-17 16:25:42,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 1117 flow. Second operand has 9 states, 9 states have (on average 105.11111111111111) internal successors, (946), 9 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:42,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:42,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-11-17 16:25:42,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:43,321 INFO L124 PetriNetUnfolderBase]: 7375/9938 cut-off events. [2023-11-17 16:25:43,322 INFO L125 PetriNetUnfolderBase]: For 89649/89649 co-relation queries the response was YES. [2023-11-17 16:25:43,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59633 conditions, 9938 events. 7375/9938 cut-off events. For 89649/89649 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 45927 event pairs, 1477 based on Foata normal form. 214/10152 useless extension candidates. Maximal degree in co-relation 52686. Up to 4499 conditions per place. [2023-11-17 16:25:43,474 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 135 selfloop transitions, 70 changer transitions 7/212 dead transitions. [2023-11-17 16:25:43,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 212 transitions, 2620 flow [2023-11-17 16:25:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:25:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:25:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1021 transitions. [2023-11-17 16:25:43,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4687786960514233 [2023-11-17 16:25:43,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1021 transitions. [2023-11-17 16:25:43,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1021 transitions. [2023-11-17 16:25:43,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:43,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1021 transitions. [2023-11-17 16:25:43,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.44444444444444) internal successors, (1021), 9 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:43,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:43,489 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:43,489 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 1117 flow. Second operand 9 states and 1021 transitions. [2023-11-17 16:25:43,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 212 transitions, 2620 flow [2023-11-17 16:25:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 212 transitions, 2440 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-11-17 16:25:43,601 INFO L231 Difference]: Finished difference. Result has 81 places, 123 transitions, 1691 flow [2023-11-17 16:25:43,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=81, PETRI_TRANSITIONS=123} [2023-11-17 16:25:43,602 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 43 predicate places. [2023-11-17 16:25:43,602 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 123 transitions, 1691 flow [2023-11-17 16:25:43,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.11111111111111) internal successors, (946), 9 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:43,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:43,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:43,609 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 16:25:43,808 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,SelfDestructingSolverStorable13 [2023-11-17 16:25:43,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:43,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1005377771, now seen corresponding path program 1 times [2023-11-17 16:25:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:43,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652999658] [2023-11-17 16:25:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652999658] [2023-11-17 16:25:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652999658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128439751] [2023-11-17 16:25:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:43,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:43,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:43,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:25:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:44,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:44,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:44,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128439751] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:25:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-11-17 16:25:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022070154] [2023-11-17 16:25:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:25:44,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:44,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 123 transitions, 1691 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:44,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:44,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:44,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:45,223 INFO L124 PetriNetUnfolderBase]: 8721/11698 cut-off events. [2023-11-17 16:25:45,223 INFO L125 PetriNetUnfolderBase]: For 123344/123344 co-relation queries the response was YES. [2023-11-17 16:25:45,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73667 conditions, 11698 events. 8721/11698 cut-off events. For 123344/123344 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 54442 event pairs, 2163 based on Foata normal form. 414/12112 useless extension candidates. Maximal degree in co-relation 64956. Up to 9720 conditions per place. [2023-11-17 16:25:45,286 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 187 selfloop transitions, 20 changer transitions 1/208 dead transitions. [2023-11-17 16:25:45,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 208 transitions, 3199 flow [2023-11-17 16:25:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-11-17 16:25:45,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092975206611571 [2023-11-17 16:25:45,290 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-11-17 16:25:45,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-11-17 16:25:45,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:45,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-11-17 16:25:45,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:45,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:45,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:45,294 INFO L175 Difference]: Start difference. First operand has 81 places, 123 transitions, 1691 flow. Second operand 4 states and 493 transitions. [2023-11-17 16:25:45,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 208 transitions, 3199 flow [2023-11-17 16:25:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 208 transitions, 3041 flow, removed 46 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:45,368 INFO L231 Difference]: Finished difference. Result has 84 places, 131 transitions, 1761 flow [2023-11-17 16:25:45,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1761, PETRI_PLACES=84, PETRI_TRANSITIONS=131} [2023-11-17 16:25:45,369 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 46 predicate places. [2023-11-17 16:25:45,369 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 131 transitions, 1761 flow [2023-11-17 16:25:45,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:45,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:45,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:45,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:45,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:45,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:45,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash 99986775, now seen corresponding path program 2 times [2023-11-17 16:25:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594407112] [2023-11-17 16:25:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594407112] [2023-11-17 16:25:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594407112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810475474] [2023-11-17 16:25:45,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:25:45,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:45,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:25:45,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:45,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:45,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:45,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:45,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810475474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:45,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:45,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-11-17 16:25:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063378443] [2023-11-17 16:25:45,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:45,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:25:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:25:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:25:45,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 242 [2023-11-17 16:25:45,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 131 transitions, 1761 flow. Second operand has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:45,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:45,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 242 [2023-11-17 16:25:45,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:47,880 INFO L124 PetriNetUnfolderBase]: 12169/16246 cut-off events. [2023-11-17 16:25:47,880 INFO L125 PetriNetUnfolderBase]: For 185394/185394 co-relation queries the response was YES. [2023-11-17 16:25:47,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107450 conditions, 16246 events. 12169/16246 cut-off events. For 185394/185394 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 78431 event pairs, 3037 based on Foata normal form. 342/16588 useless extension candidates. Maximal degree in co-relation 93178. Up to 9981 conditions per place. [2023-11-17 16:25:48,037 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 350 selfloop transitions, 100 changer transitions 3/453 dead transitions. [2023-11-17 16:25:48,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 453 transitions, 7015 flow [2023-11-17 16:25:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:25:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:25:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1060 transitions. [2023-11-17 16:25:48,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866850321395776 [2023-11-17 16:25:48,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1060 transitions. [2023-11-17 16:25:48,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1060 transitions. [2023-11-17 16:25:48,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:48,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1060 transitions. [2023-11-17 16:25:48,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.77777777777777) internal successors, (1060), 9 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:48,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:48,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:48,070 INFO L175 Difference]: Start difference. First operand has 84 places, 131 transitions, 1761 flow. Second operand 9 states and 1060 transitions. [2023-11-17 16:25:48,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 453 transitions, 7015 flow [2023-11-17 16:25:48,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 453 transitions, 6991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:25:48,232 INFO L231 Difference]: Finished difference. Result has 96 places, 217 transitions, 3467 flow [2023-11-17 16:25:48,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3467, PETRI_PLACES=96, PETRI_TRANSITIONS=217} [2023-11-17 16:25:48,232 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-11-17 16:25:48,233 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 217 transitions, 3467 flow [2023-11-17 16:25:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:48,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:48,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:48,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:48,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 16:25:48,435 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:48,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1617420985, now seen corresponding path program 3 times [2023-11-17 16:25:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812913326] [2023-11-17 16:25:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:48,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812913326] [2023-11-17 16:25:48,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812913326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268234932] [2023-11-17 16:25:48,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:25:48,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:48,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:48,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:25:48,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:25:48,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:48,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 16:25:48,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:25:48,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:25:48,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268234932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:48,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:25:48,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-17 16:25:48,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001540671] [2023-11-17 16:25:48,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:48,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:48,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:48,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:25:48,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242 [2023-11-17 16:25:48,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 217 transitions, 3467 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:48,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:48,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242 [2023-11-17 16:25:48,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:50,695 INFO L124 PetriNetUnfolderBase]: 12529/16526 cut-off events. [2023-11-17 16:25:50,695 INFO L125 PetriNetUnfolderBase]: For 242349/242349 co-relation queries the response was YES. [2023-11-17 16:25:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122431 conditions, 16526 events. 12529/16526 cut-off events. For 242349/242349 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 77150 event pairs, 2677 based on Foata normal form. 390/16916 useless extension candidates. Maximal degree in co-relation 115974. Up to 9329 conditions per place. [2023-11-17 16:25:50,886 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 225 selfloop transitions, 149 changer transitions 1/375 dead transitions. [2023-11-17 16:25:50,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 375 transitions, 6596 flow [2023-11-17 16:25:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:25:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:25:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2023-11-17 16:25:50,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134297520661157 [2023-11-17 16:25:50,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 497 transitions. [2023-11-17 16:25:50,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 497 transitions. [2023-11-17 16:25:50,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:50,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 497 transitions. [2023-11-17 16:25:50,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:50,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:50,892 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:50,892 INFO L175 Difference]: Start difference. First operand has 96 places, 217 transitions, 3467 flow. Second operand 4 states and 497 transitions. [2023-11-17 16:25:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 375 transitions, 6596 flow [2023-11-17 16:25:51,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 375 transitions, 6192 flow, removed 202 selfloop flow, removed 0 redundant places. [2023-11-17 16:25:51,228 INFO L231 Difference]: Finished difference. Result has 100 places, 281 transitions, 4861 flow [2023-11-17 16:25:51,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4861, PETRI_PLACES=100, PETRI_TRANSITIONS=281} [2023-11-17 16:25:51,229 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-11-17 16:25:51,229 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 281 transitions, 4861 flow [2023-11-17 16:25:51,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:51,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:51,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:51,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:51,437 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,SelfDestructingSolverStorable16 [2023-11-17 16:25:51,437 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:51,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1592594121, now seen corresponding path program 1 times [2023-11-17 16:25:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:51,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694039358] [2023-11-17 16:25:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:51,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694039358] [2023-11-17 16:25:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694039358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739194467] [2023-11-17 16:25:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:51,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:51,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:51,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:25:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:51,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:25:51,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:51,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739194467] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:51,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:51,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 16:25:51,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508477785] [2023-11-17 16:25:51,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:51,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:25:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:25:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:25:51,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242 [2023-11-17 16:25:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 281 transitions, 4861 flow. Second operand has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:51,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242 [2023-11-17 16:25:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:56,353 INFO L124 PetriNetUnfolderBase]: 24284/32858 cut-off events. [2023-11-17 16:25:56,354 INFO L125 PetriNetUnfolderBase]: For 487111/487111 co-relation queries the response was YES. [2023-11-17 16:25:56,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235608 conditions, 32858 events. 24284/32858 cut-off events. For 487111/487111 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 183037 event pairs, 4165 based on Foata normal form. 2599/35457 useless extension candidates. Maximal degree in co-relation 227511. Up to 18727 conditions per place. [2023-11-17 16:25:56,644 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 320 selfloop transitions, 262 changer transitions 3/585 dead transitions. [2023-11-17 16:25:56,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 585 transitions, 10471 flow [2023-11-17 16:25:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2023-11-17 16:25:56,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330578512396694 [2023-11-17 16:25:56,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2023-11-17 16:25:56,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2023-11-17 16:25:56,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:56,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2023-11-17 16:25:56,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:56,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:56,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:56,650 INFO L175 Difference]: Start difference. First operand has 100 places, 281 transitions, 4861 flow. Second operand 5 states and 645 transitions. [2023-11-17 16:25:56,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 585 transitions, 10471 flow [2023-11-17 16:25:57,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 585 transitions, 10157 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-17 16:25:57,697 INFO L231 Difference]: Finished difference. Result has 102 places, 502 transitions, 9854 flow [2023-11-17 16:25:57,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9854, PETRI_PLACES=102, PETRI_TRANSITIONS=502} [2023-11-17 16:25:57,698 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2023-11-17 16:25:57,698 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 502 transitions, 9854 flow [2023-11-17 16:25:57,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:57,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:57,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:57,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 16:25:57,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:25:57,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2042408733, now seen corresponding path program 2 times [2023-11-17 16:25:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:57,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166281034] [2023-11-17 16:25:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166281034] [2023-11-17 16:25:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166281034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352588746] [2023-11-17 16:25:58,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:25:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:58,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:58,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:58,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:25:58,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:58,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:58,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:25:58,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:58,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352588746] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:58,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:58,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-11-17 16:25:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254286144] [2023-11-17 16:25:58,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:25:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:25:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:25:58,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 242 [2023-11-17 16:25:58,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 502 transitions, 9854 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:58,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:58,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 242 [2023-11-17 16:25:58,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:07,378 INFO L124 PetriNetUnfolderBase]: 46206/62587 cut-off events. [2023-11-17 16:26:07,378 INFO L125 PetriNetUnfolderBase]: For 1144218/1144218 co-relation queries the response was YES. [2023-11-17 16:26:07,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488444 conditions, 62587 events. 46206/62587 cut-off events. For 1144218/1144218 co-relation queries the response was YES. Maximal size of possible extension queue 2737. Compared 380592 event pairs, 7497 based on Foata normal form. 2599/65186 useless extension candidates. Maximal degree in co-relation 427222. Up to 32289 conditions per place. [2023-11-17 16:26:08,122 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 352 selfloop transitions, 617 changer transitions 3/972 dead transitions. [2023-11-17 16:26:08,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 972 transitions, 19656 flow [2023-11-17 16:26:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:26:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:26:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2023-11-17 16:26:08,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661157024793388 [2023-11-17 16:26:08,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2023-11-17 16:26:08,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2023-11-17 16:26:08,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:08,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2023-11-17 16:26:08,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:08,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:08,128 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:08,128 INFO L175 Difference]: Start difference. First operand has 102 places, 502 transitions, 9854 flow. Second operand 5 states and 685 transitions. [2023-11-17 16:26:08,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 972 transitions, 19656 flow [2023-11-17 16:26:10,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 972 transitions, 19316 flow, removed 170 selfloop flow, removed 0 redundant places. [2023-11-17 16:26:10,664 INFO L231 Difference]: Finished difference. Result has 109 places, 865 transitions, 19376 flow [2023-11-17 16:26:10,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=9514, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=19376, PETRI_PLACES=109, PETRI_TRANSITIONS=865} [2023-11-17 16:26:10,665 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2023-11-17 16:26:10,665 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 865 transitions, 19376 flow [2023-11-17 16:26:10,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:10,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:10,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:10,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:10,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:10,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:26:10,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1957526383, now seen corresponding path program 3 times [2023-11-17 16:26:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235007771] [2023-11-17 16:26:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235007771] [2023-11-17 16:26:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235007771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721966678] [2023-11-17 16:26:11,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:26:11,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:11,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:11,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:26:11,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:26:11,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:11,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:26:11,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:11,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721966678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:11,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 16:26:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67252241] [2023-11-17 16:26:11,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:11,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:26:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:26:11,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:26:11,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-11-17 16:26:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 865 transitions, 19376 flow. Second operand has 14 states, 14 states have (on average 105.14285714285714) internal successors, (1472), 14 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-11-17 16:26:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:34,142 INFO L124 PetriNetUnfolderBase]: 87718/117587 cut-off events. [2023-11-17 16:26:34,142 INFO L125 PetriNetUnfolderBase]: For 2475237/2475237 co-relation queries the response was YES. [2023-11-17 16:26:34,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003998 conditions, 117587 events. 87718/117587 cut-off events. For 2475237/2475237 co-relation queries the response was YES. Maximal size of possible extension queue 4985. Compared 748186 event pairs, 5828 based on Foata normal form. 2834/120421 useless extension candidates. Maximal degree in co-relation 863902. Up to 50751 conditions per place. [2023-11-17 16:26:35,562 INFO L140 encePairwiseOnDemand]: 233/242 looper letters, 2918 selfloop transitions, 1164 changer transitions 0/4082 dead transitions. [2023-11-17 16:26:35,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 4082 transitions, 94344 flow [2023-11-17 16:26:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-17 16:26:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-17 16:26:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4380 transitions. [2023-11-17 16:26:35,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46408137317228226 [2023-11-17 16:26:35,572 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4380 transitions. [2023-11-17 16:26:35,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4380 transitions. [2023-11-17 16:26:35,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:35,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4380 transitions. [2023-11-17 16:26:35,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 112.3076923076923) internal successors, (4380), 39 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:35,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 242.0) internal successors, (9680), 40 states have internal predecessors, (9680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:35,592 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 242.0) internal successors, (9680), 40 states have internal predecessors, (9680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:35,592 INFO L175 Difference]: Start difference. First operand has 109 places, 865 transitions, 19376 flow. Second operand 39 states and 4380 transitions. [2023-11-17 16:26:35,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 4082 transitions, 94344 flow [2023-11-17 16:26:48,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 4082 transitions, 89392 flow, removed 2443 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:48,706 INFO L231 Difference]: Finished difference. Result has 180 places, 1918 transitions, 44207 flow [2023-11-17 16:26:48,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=18250, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=44207, PETRI_PLACES=180, PETRI_TRANSITIONS=1918} [2023-11-17 16:26:48,707 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 142 predicate places. [2023-11-17 16:26:48,707 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 1918 transitions, 44207 flow [2023-11-17 16:26:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 105.14285714285714) internal successors, (1472), 14 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:48,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:48,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:48,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:48,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:48,914 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:26:48,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1075448484, now seen corresponding path program 4 times [2023-11-17 16:26:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:48,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82623752] [2023-11-17 16:26:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:49,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82623752] [2023-11-17 16:26:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82623752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594219839] [2023-11-17 16:26:49,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:26:49,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:49,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:49,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:26:49,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:26:49,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:49,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:26:49,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:49,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594219839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:49,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-11-17 16:26:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403658568] [2023-11-17 16:26:49,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:49,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:26:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:26:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:26:49,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 242 [2023-11-17 16:26:49,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 1918 transitions, 44207 flow. Second operand has 16 states, 16 states have (on average 103.125) internal successors, (1650), 16 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:49,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:49,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 242 [2023-11-17 16:26:49,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand