/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/chl-match-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:52:34,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:52:34,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:52:34,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:52:34,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:52:34,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:52:34,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:52:34,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:52:34,307 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:52:34,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:52:34,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:52:34,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:52:34,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:52:34,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:52:34,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:52:34,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:52:34,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:52:34,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:52:34,313 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:52:34,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:52:34,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:52:34,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:52:34,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:52:34,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:52:34,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:52:34,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:52:34,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:52:34,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:52:34,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:52:34,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:52:34,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:52:34,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:52:34,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:52:34,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-11-17 15:52:35,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:52:35,710 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:52:35,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-11-17 15:52:35,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15374880a/ee3c0cd842904749880becef8d782e4d/FLAGbc9d03151 [2023-11-17 15:52:35,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15374880a/ee3c0cd842904749880becef8d782e4d [2023-11-17 15:52:35,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:52:35,734 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:52:35,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:52:35,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:52:35,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:52:35,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410c1ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35, skipping insertion in model container [2023-11-17 15:52:35,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:52:35,888 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3056,3069] [2023-11-17 15:52:35,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:52:35,899 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:52:35,914 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3056,3069] [2023-11-17 15:52:35,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:52:35,930 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:52:35,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35 WrapperNode [2023-11-17 15:52:35,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:52:35,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:52:35,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:52:35,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:52:35,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,960 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 217 [2023-11-17 15:52:35,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:52:35,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:52:35,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:52:35,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:52:35,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:52:35,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:52:35,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:52:35,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:52:35,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (1/1) ... [2023-11-17 15:52:35,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:52:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:52:36,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:52:36,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:52:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:52:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:52:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:52:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:52:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:52:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:52:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:52:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:52:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:52:36,066 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:52:36,167 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:52:36,168 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:52:36,414 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:52:36,425 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:52:36,425 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:52:36,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:52:36 BoogieIcfgContainer [2023-11-17 15:52:36,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:52:36,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:52:36,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:52:36,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:52:36,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:52:35" (1/3) ... [2023-11-17 15:52:36,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b30191c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:52:36, skipping insertion in model container [2023-11-17 15:52:36,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:52:35" (2/3) ... [2023-11-17 15:52:36,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b30191c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:52:36, skipping insertion in model container [2023-11-17 15:52:36,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:52:36" (3/3) ... [2023-11-17 15:52:36,432 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-11-17 15:52:36,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:52:36,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:52:36,444 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:52:36,547 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:52:36,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 297 transitions, 615 flow [2023-11-17 15:52:36,723 INFO L124 PetriNetUnfolderBase]: 14/294 cut-off events. [2023-11-17 15:52:36,724 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:52:36,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 14/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 415 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2023-11-17 15:52:36,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 297 transitions, 615 flow [2023-11-17 15:52:36,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 283 transitions, 584 flow [2023-11-17 15:52:36,742 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:52:36,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 283 transitions, 584 flow [2023-11-17 15:52:36,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 283 transitions, 584 flow [2023-11-17 15:52:36,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 283 transitions, 584 flow [2023-11-17 15:52:36,806 INFO L124 PetriNetUnfolderBase]: 14/283 cut-off events. [2023-11-17 15:52:36,806 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:52:36,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 14/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 414 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2023-11-17 15:52:36,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 25920 [2023-11-17 15:52:43,107 INFO L134 LiptonReduction]: Checked pairs total: 21441 [2023-11-17 15:52:43,107 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-11-17 15:52:43,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:52:43,141 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;@608f52ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:52:43,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:52:43,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:52:43,145 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:52:43,145 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:52:43,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:43,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:43,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:43,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 836551234, now seen corresponding path program 1 times [2023-11-17 15:52:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298103166] [2023-11-17 15:52:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298103166] [2023-11-17 15:52:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298103166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897394970] [2023-11-17 15:52:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:44,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:44,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:44,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:44,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:44,545 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-11-17 15:52:44,545 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 15:52:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 277 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-11-17 15:52:44,547 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-11-17 15:52:44,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-11-17 15:52:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2023-11-17 15:52:44,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020234291799787 [2023-11-17 15:52:44,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2023-11-17 15:52:44,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2023-11-17 15:52:44,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:44,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2023-11-17 15:52:44,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,586 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1510 transitions. [2023-11-17 15:52:44,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-11-17 15:52:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:52:44,591 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-11-17 15:52:44,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-17 15:52:44,595 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-17 15:52:44,596 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-11-17 15:52:44,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:44,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:44,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:52:44,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:44,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1850990244, now seen corresponding path program 2 times [2023-11-17 15:52:44,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:44,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548419448] [2023-11-17 15:52:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:44,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548419448] [2023-11-17 15:52:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548419448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62644146] [2023-11-17 15:52:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:45,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:45,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:45,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:45,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:45,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:45,335 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-11-17 15:52:45,336 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-17 15:52:45,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 408 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-11-17 15:52:45,336 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-11-17 15:52:45,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-11-17 15:52:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2023-11-17 15:52:45,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020234291799787 [2023-11-17 15:52:45,340 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2023-11-17 15:52:45,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2023-11-17 15:52:45,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:45,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2023-11-17 15:52:45,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:45,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:45,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:45,348 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1510 transitions. [2023-11-17 15:52:45,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-11-17 15:52:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:52:45,351 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-11-17 15:52:45,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-11-17 15:52:45,352 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-17 15:52:45,352 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-11-17 15:52:45,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:45,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:45,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:52:45,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:45,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 411818430, now seen corresponding path program 3 times [2023-11-17 15:52:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043124587] [2023-11-17 15:52:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:45,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043124587] [2023-11-17 15:52:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043124587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:46,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057154698] [2023-11-17 15:52:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:46,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:46,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:46,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:46,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:46,289 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2023-11-17 15:52:46,289 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-17 15:52:46,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-11-17 15:52:46,291 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-11-17 15:52:46,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-11-17 15:52:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-11-17 15:52:46,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014909478168264 [2023-11-17 15:52:46,294 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-11-17 15:52:46,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-11-17 15:52:46,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:46,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-11-17 15:52:46,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,302 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1508 transitions. [2023-11-17 15:52:46,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-11-17 15:52:46,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 15:52:46,305 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-11-17 15:52:46,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-11-17 15:52:46,306 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-17 15:52:46,306 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-11-17 15:52:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:46,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:52:46,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:46,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -781324364, now seen corresponding path program 4 times [2023-11-17 15:52:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:46,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584735075] [2023-11-17 15:52:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:46,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584735075] [2023-11-17 15:52:46,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584735075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:46,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:46,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109501459] [2023-11-17 15:52:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:46,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:46,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:46,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:46,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:46,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:46,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:46,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:47,005 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-11-17 15:52:47,006 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-17 15:52:47,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-11-17 15:52:47,006 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-11-17 15:52:47,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-11-17 15:52:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1500 transitions. [2023-11-17 15:52:47,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993610223642173 [2023-11-17 15:52:47,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1500 transitions. [2023-11-17 15:52:47,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1500 transitions. [2023-11-17 15:52:47,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:47,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1500 transitions. [2023-11-17 15:52:47,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,018 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 1500 transitions. [2023-11-17 15:52:47,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-11-17 15:52:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 15:52:47,021 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-11-17 15:52:47,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-11-17 15:52:47,023 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-11-17 15:52:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-11-17 15:52:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:47,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:47,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:52:47,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:47,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -433792550, now seen corresponding path program 5 times [2023-11-17 15:52:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620222696] [2023-11-17 15:52:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620222696] [2023-11-17 15:52:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620222696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:47,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:47,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:47,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164290401] [2023-11-17 15:52:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:47,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:47,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:47,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:47,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:47,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:47,646 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-11-17 15:52:47,646 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-17 15:52:47,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-11-17 15:52:47,649 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-11-17 15:52:47,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-11-17 15:52:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1495 transitions. [2023-11-17 15:52:47,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39802981895633655 [2023-11-17 15:52:47,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1495 transitions. [2023-11-17 15:52:47,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1495 transitions. [2023-11-17 15:52:47,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:47,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1495 transitions. [2023-11-17 15:52:47,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.16666666666666) internal successors, (1495), 6 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,660 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,660 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 1495 transitions. [2023-11-17 15:52:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-11-17 15:52:47,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-17 15:52:47,661 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-11-17 15:52:47,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-11-17 15:52:47,663 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-11-17 15:52:47,663 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-11-17 15:52:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:47,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:52:47,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:52:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:52:47,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:52:47,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:52:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1178495048, now seen corresponding path program 6 times [2023-11-17 15:52:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:52:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919666567] [2023-11-17 15:52:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:52:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:52:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:52:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:52:48,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:52:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919666567] [2023-11-17 15:52:48,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919666567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:52:48,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:52:48,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:52:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31507809] [2023-11-17 15:52:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:52:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:52:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:52:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:52:48,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:52:48,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 626 [2023-11-17 15:52:48,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:48,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:52:48,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 626 [2023-11-17 15:52:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:52:48,393 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 15:52:48,393 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:52:48,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-11-17 15:52:48,393 INFO L140 encePairwiseOnDemand]: 621/626 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-11-17 15:52:48,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-11-17 15:52:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:52:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:52:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1483 transitions. [2023-11-17 15:52:48,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39483493077742277 [2023-11-17 15:52:48,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1483 transitions. [2023-11-17 15:52:48,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1483 transitions. [2023-11-17 15:52:48,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:52:48,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1483 transitions. [2023-11-17 15:52:48,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.16666666666666) internal successors, (1483), 6 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:48,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:48,403 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:48,403 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 1483 transitions. [2023-11-17 15:52:48,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-11-17 15:52:48,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 15:52:48,404 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-17 15:52:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-17 15:52:48,406 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-17 15:52:48,406 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-17 15:52:48,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:52:48,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:52:48,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:52:48,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:52:48,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:52:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:52:48,409 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-11-17 15:52:48,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:52:48,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:52:48,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:52:48 BasicIcfg [2023-11-17 15:52:48,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:52:48,413 INFO L158 Benchmark]: Toolchain (without parser) took 12679.33ms. Allocated memory was 211.8MB in the beginning and 418.4MB in the end (delta: 206.6MB). Free memory was 171.8MB in the beginning and 350.8MB in the end (delta: -179.1MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. [2023-11-17 15:52:48,417 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 166.7MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:52:48,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.96ms. Allocated memory is still 211.8MB. Free memory was 171.8MB in the beginning and 160.2MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 15:52:48,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.69ms. Allocated memory is still 211.8MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:52:48,417 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 211.8MB. Free memory was 157.6MB in the beginning and 155.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:52:48,417 INFO L158 Benchmark]: RCFGBuilder took 435.47ms. Allocated memory is still 211.8MB. Free memory was 155.5MB in the beginning and 133.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 15:52:48,418 INFO L158 Benchmark]: TraceAbstraction took 11985.09ms. Allocated memory was 211.8MB in the beginning and 418.4MB in the end (delta: 206.6MB). Free memory was 132.9MB in the beginning and 350.8MB in the end (delta: -217.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:52:48,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 166.7MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.96ms. Allocated memory is still 211.8MB. Free memory was 171.8MB in the beginning and 160.2MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.69ms. Allocated memory is still 211.8MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 211.8MB. Free memory was 157.6MB in the beginning and 155.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 435.47ms. Allocated memory is still 211.8MB. Free memory was 155.5MB in the beginning and 133.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 11985.09ms. Allocated memory was 211.8MB in the beginning and 418.4MB in the end (delta: 206.6MB). Free memory was 132.9MB in the beginning and 350.8MB in the end (delta: -217.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 279 PlacesBefore, 26 PlacesAfterwards, 283 TransitionsBefore, 16 TransitionsAfterwards, 25920 CoEnabledTransitionPairs, 8 FixpointIterations, 78 TrivialSequentialCompositions, 186 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 46 ConcurrentYvCompositions, 14 ChoiceCompositions, 329 TotalNumberOfCompositions, 21441 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21441, independent: 21441, independent conditional: 0, independent unconditional: 21441, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18690, independent: 18690, independent conditional: 0, independent unconditional: 18690, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18690, independent: 18690, independent conditional: 0, independent unconditional: 18690, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21441, independent: 2751, independent conditional: 0, independent unconditional: 2751, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 18690, unknown conditional: 0, unknown unconditional: 18690] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 89]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 458 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:52:48,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...