/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:27:29,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:27:29,366 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 11:27:29,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:27:29,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:27:29,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:27:29,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:27:29,403 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:27:29,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:27:29,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:27:29,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:27:29,408 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:27:29,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:27:29,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:27:29,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:27:29,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:27:29,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:27:29,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:27:29,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:27:29,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:27:29,411 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:27:29,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:27:29,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:27:29,412 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:27:29,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:27:29,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:29,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:27:29,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:27:29,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:27:29,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:27:29,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:27:29,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:27:29,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:27:29,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:27:29,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:27:29,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:27:29,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:27:29,687 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:27:29,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-11-17 11:27:30,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:27:31,171 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:27:31,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-11-17 11:27:31,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50cecbc21/76cd674efe3841e7b991ae48da685e4a/FLAG7e6c748a7 [2023-11-17 11:27:31,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50cecbc21/76cd674efe3841e7b991ae48da685e4a [2023-11-17 11:27:31,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:27:31,206 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:27:31,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:31,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:27:31,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:27:31,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31, skipping insertion in model container [2023-11-17 11:27:31,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,261 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:27:31,400 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i[944,957] [2023-11-17 11:27:31,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:31,649 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:27:31,662 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i[944,957] [2023-11-17 11:27:31,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:31,774 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:31,774 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:31,781 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:27:31,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31 WrapperNode [2023-11-17 11:27:31,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:31,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:31,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:27:31,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:27:31,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,841 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2023-11-17 11:27:31,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:31,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:27:31,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:27:31,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:27:31,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:27:31,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:27:31,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:27:31,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:27:31,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (1/1) ... [2023-11-17 11:27:31,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:27:31,958 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 11:27:31,982 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 11:27:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:27:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:27:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:27:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:27:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:27:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:27:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:27:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:27:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:27:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:27:31,998 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 11:27:32,145 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:27:32,147 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:27:32,510 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:27:32,757 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:27:32,758 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:27:32,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:32 BoogieIcfgContainer [2023-11-17 11:27:32,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:27:32,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:27:32,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:27:32,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:27:32,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:27:31" (1/3) ... [2023-11-17 11:27:32,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:32, skipping insertion in model container [2023-11-17 11:27:32,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:31" (2/3) ... [2023-11-17 11:27:32,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b3a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:32, skipping insertion in model container [2023-11-17 11:27:32,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:32" (3/3) ... [2023-11-17 11:27:32,769 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-11-17 11:27:32,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:27:32,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:27:32,786 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:27:32,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:27:32,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2023-11-17 11:27:32,898 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-17 11:27:32,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:32,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 2/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-17 11:27:32,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2023-11-17 11:27:32,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 68 flow [2023-11-17 11:27:32,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:27:32,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 31 transitions, 68 flow [2023-11-17 11:27:32,938 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 31 transitions, 68 flow [2023-11-17 11:27:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 68 flow [2023-11-17 11:27:32,955 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-17 11:27:32,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:32,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 2/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-17 11:27:32,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 496 [2023-11-17 11:27:34,348 INFO L134 LiptonReduction]: Checked pairs total: 2183 [2023-11-17 11:27:34,348 INFO L136 LiptonReduction]: Total number of compositions: 21 [2023-11-17 11:27:34,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:27:34,372 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;@5cc72a6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:27:34,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:27:34,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:27:34,378 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-17 11:27:34,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:34,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:34,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:27:34,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:34,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:34,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1359339629, now seen corresponding path program 1 times [2023-11-17 11:27:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737969013] [2023-11-17 11:27:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:34,823 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 11:27:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737969013] [2023-11-17 11:27:34,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737969013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:34,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:34,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:27:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11416837] [2023-11-17 11:27:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:34,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:34,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2023-11-17 11:27:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:34,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2023-11-17 11:27:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:35,072 INFO L124 PetriNetUnfolderBase]: 204/355 cut-off events. [2023-11-17 11:27:35,073 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:27:35,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 355 events. 204/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1345 event pairs, 49 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 712. Up to 256 conditions per place. [2023-11-17 11:27:35,079 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 20 selfloop transitions, 2 changer transitions 2/25 dead transitions. [2023-11-17 11:27:35,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 104 flow [2023-11-17 11:27:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2023-11-17 11:27:35,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2023-11-17 11:27:35,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2023-11-17 11:27:35,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2023-11-17 11:27:35,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:35,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2023-11-17 11:27:35,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:35,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:35,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:35,102 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 46 flow. Second operand 3 states and 65 transitions. [2023-11-17 11:27:35,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 104 flow [2023-11-17 11:27:35,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:35,106 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-11-17 11:27:35,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 11:27:35,110 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-17 11:27:35,111 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-11-17 11:27:35,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:35,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:35,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:35,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:27:35,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:35,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 810143213, now seen corresponding path program 1 times [2023-11-17 11:27:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224670581] [2023-11-17 11:27:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:36,008 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 11:27:36,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:36,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224670581] [2023-11-17 11:27:36,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224670581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:36,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532993662] [2023-11-17 11:27:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:36,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2023-11-17 11:27:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:36,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2023-11-17 11:27:36,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:36,257 INFO L124 PetriNetUnfolderBase]: 235/409 cut-off events. [2023-11-17 11:27:36,257 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-17 11:27:36,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 409 events. 235/409 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1481 event pairs, 56 based on Foata normal form. 9/418 useless extension candidates. Maximal degree in co-relation 848. Up to 349 conditions per place. [2023-11-17 11:27:36,261 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 25 selfloop transitions, 10 changer transitions 0/35 dead transitions. [2023-11-17 11:27:36,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 35 transitions, 154 flow [2023-11-17 11:27:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:27:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:27:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2023-11-17 11:27:36,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35648148148148145 [2023-11-17 11:27:36,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 77 transitions. [2023-11-17 11:27:36,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 77 transitions. [2023-11-17 11:27:36,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:36,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 77 transitions. [2023-11-17 11:27:36,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,265 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 4 states and 77 transitions. [2023-11-17 11:27:36,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 35 transitions, 154 flow [2023-11-17 11:27:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:36,268 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 101 flow [2023-11-17 11:27:36,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-11-17 11:27:36,268 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-17 11:27:36,269 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 101 flow [2023-11-17 11:27:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:36,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:36,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:27:36,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:36,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash -655363902, now seen corresponding path program 1 times [2023-11-17 11:27:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324175340] [2023-11-17 11:27:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:36,888 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 11:27:36,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324175340] [2023-11-17 11:27:36,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324175340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:36,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:36,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:36,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350925368] [2023-11-17 11:27:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:36,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2023-11-17 11:27:36,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:36,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:36,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2023-11-17 11:27:36,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:37,049 INFO L124 PetriNetUnfolderBase]: 210/369 cut-off events. [2023-11-17 11:27:37,050 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-17 11:27:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 369 events. 210/369 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1281 event pairs, 67 based on Foata normal form. 13/382 useless extension candidates. Maximal degree in co-relation 1043. Up to 215 conditions per place. [2023-11-17 11:27:37,053 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-11-17 11:27:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 204 flow [2023-11-17 11:27:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:27:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:27:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2023-11-17 11:27:37,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32407407407407407 [2023-11-17 11:27:37,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 70 transitions. [2023-11-17 11:27:37,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 70 transitions. [2023-11-17 11:27:37,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:37,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 70 transitions. [2023-11-17 11:27:37,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,060 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 101 flow. Second operand 4 states and 70 transitions. [2023-11-17 11:27:37,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 204 flow [2023-11-17 11:27:37,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:27:37,063 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 156 flow [2023-11-17 11:27:37,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-17 11:27:37,065 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-11-17 11:27:37,065 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 156 flow [2023-11-17 11:27:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:37,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:37,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:27:37,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:37,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1622211081, now seen corresponding path program 1 times [2023-11-17 11:27:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469590580] [2023-11-17 11:27:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:37,181 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 11:27:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469590580] [2023-11-17 11:27:37,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469590580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:37,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:37,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954791412] [2023-11-17 11:27:37,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:37,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:37,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2023-11-17 11:27:37,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:37,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2023-11-17 11:27:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:37,253 INFO L124 PetriNetUnfolderBase]: 61/142 cut-off events. [2023-11-17 11:27:37,253 INFO L125 PetriNetUnfolderBase]: For 110/117 co-relation queries the response was YES. [2023-11-17 11:27:37,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 142 events. 61/142 cut-off events. For 110/117 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 435 event pairs, 12 based on Foata normal form. 28/168 useless extension candidates. Maximal degree in co-relation 451. Up to 83 conditions per place. [2023-11-17 11:27:37,254 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-17 11:27:37,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 268 flow [2023-11-17 11:27:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-17 11:27:37,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35802469135802467 [2023-11-17 11:27:37,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-17 11:27:37,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-17 11:27:37,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:37,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-17 11:27:37,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,258 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 156 flow. Second operand 3 states and 58 transitions. [2023-11-17 11:27:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 268 flow [2023-11-17 11:27:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 259 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:37,261 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 160 flow [2023-11-17 11:27:37,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-17 11:27:37,262 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-17 11:27:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 160 flow [2023-11-17 11:27:37,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:37,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:37,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:37,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:27:37,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:37,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1459314899, now seen corresponding path program 1 times [2023-11-17 11:27:37,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:37,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111998628] [2023-11-17 11:27:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:38,232 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 11:27:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111998628] [2023-11-17 11:27:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111998628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:38,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157203829] [2023-11-17 11:27:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:38,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:38,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:38,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2023-11-17 11:27:38,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:38,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2023-11-17 11:27:38,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:38,342 INFO L124 PetriNetUnfolderBase]: 60/141 cut-off events. [2023-11-17 11:27:38,342 INFO L125 PetriNetUnfolderBase]: For 94/101 co-relation queries the response was YES. [2023-11-17 11:27:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 141 events. 60/141 cut-off events. For 94/101 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 424 event pairs, 20 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 478. Up to 121 conditions per place. [2023-11-17 11:27:38,344 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 30 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2023-11-17 11:27:38,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 288 flow [2023-11-17 11:27:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2023-11-17 11:27:38,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30423280423280424 [2023-11-17 11:27:38,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 115 transitions. [2023-11-17 11:27:38,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 115 transitions. [2023-11-17 11:27:38,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:38,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 115 transitions. [2023-11-17 11:27:38,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,348 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,348 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 160 flow. Second operand 7 states and 115 transitions. [2023-11-17 11:27:38,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 288 flow [2023-11-17 11:27:38,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:38,351 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 226 flow [2023-11-17 11:27:38,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-17 11:27:38,352 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-11-17 11:27:38,352 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 226 flow [2023-11-17 11:27:38,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:38,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:38,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:27:38,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:38,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1069282068, now seen corresponding path program 1 times [2023-11-17 11:27:38,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:38,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789990999] [2023-11-17 11:27:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:38,990 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 11:27:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789990999] [2023-11-17 11:27:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789990999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553450967] [2023-11-17 11:27:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:38,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2023-11-17 11:27:38,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:38,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:38,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2023-11-17 11:27:38,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:39,107 INFO L124 PetriNetUnfolderBase]: 64/147 cut-off events. [2023-11-17 11:27:39,107 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-17 11:27:39,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 147 events. 64/147 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 419 event pairs, 21 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 558. Up to 70 conditions per place. [2023-11-17 11:27:39,110 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-11-17 11:27:39,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 358 flow [2023-11-17 11:27:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:27:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:27:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2023-11-17 11:27:39,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2023-11-17 11:27:39,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 69 transitions. [2023-11-17 11:27:39,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 69 transitions. [2023-11-17 11:27:39,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:39,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 69 transitions. [2023-11-17 11:27:39,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:39,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:39,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:39,115 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 226 flow. Second operand 4 states and 69 transitions. [2023-11-17 11:27:39,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 358 flow [2023-11-17 11:27:39,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 346 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:39,119 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 270 flow [2023-11-17 11:27:39,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-17 11:27:39,121 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-11-17 11:27:39,121 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 270 flow [2023-11-17 11:27:39,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:39,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:39,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:39,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:27:39,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:39,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -713768467, now seen corresponding path program 1 times [2023-11-17 11:27:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017877472] [2023-11-17 11:27:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:41,690 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 11:27:41,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017877472] [2023-11-17 11:27:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017877472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:41,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:41,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:27:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690704983] [2023-11-17 11:27:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:41,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:27:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:27:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:27:41,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2023-11-17 11:27:41,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 270 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:41,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:41,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2023-11-17 11:27:41,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:42,120 INFO L124 PetriNetUnfolderBase]: 87/210 cut-off events. [2023-11-17 11:27:42,120 INFO L125 PetriNetUnfolderBase]: For 457/472 co-relation queries the response was YES. [2023-11-17 11:27:42,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 210 events. 87/210 cut-off events. For 457/472 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 814 event pairs, 14 based on Foata normal form. 18/228 useless extension candidates. Maximal degree in co-relation 870. Up to 107 conditions per place. [2023-11-17 11:27:42,122 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 45 selfloop transitions, 20 changer transitions 6/75 dead transitions. [2023-11-17 11:27:42,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 646 flow [2023-11-17 11:27:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:27:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:27:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2023-11-17 11:27:42,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32407407407407407 [2023-11-17 11:27:42,124 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 140 transitions. [2023-11-17 11:27:42,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 140 transitions. [2023-11-17 11:27:42,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:42,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 140 transitions. [2023-11-17 11:27:42,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,128 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,128 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 270 flow. Second operand 8 states and 140 transitions. [2023-11-17 11:27:42,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 646 flow [2023-11-17 11:27:42,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 628 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:42,133 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 451 flow [2023-11-17 11:27:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=451, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-17 11:27:42,134 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-11-17 11:27:42,135 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 451 flow [2023-11-17 11:27:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:42,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:27:42,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:42,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2008639441, now seen corresponding path program 2 times [2023-11-17 11:27:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070246023] [2023-11-17 11:27:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:42,282 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 11:27:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070246023] [2023-11-17 11:27:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070246023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:42,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:42,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:27:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352860487] [2023-11-17 11:27:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:42,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:42,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2023-11-17 11:27:42,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:42,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2023-11-17 11:27:42,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:42,373 INFO L124 PetriNetUnfolderBase]: 43/120 cut-off events. [2023-11-17 11:27:42,373 INFO L125 PetriNetUnfolderBase]: For 334/342 co-relation queries the response was YES. [2023-11-17 11:27:42,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 120 events. 43/120 cut-off events. For 334/342 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 5 based on Foata normal form. 22/141 useless extension candidates. Maximal degree in co-relation 569. Up to 68 conditions per place. [2023-11-17 11:27:42,374 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 52 selfloop transitions, 5 changer transitions 5/66 dead transitions. [2023-11-17 11:27:42,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 664 flow [2023-11-17 11:27:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:27:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:27:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2023-11-17 11:27:42,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2023-11-17 11:27:42,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 68 transitions. [2023-11-17 11:27:42,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 68 transitions. [2023-11-17 11:27:42,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:42,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 68 transitions. [2023-11-17 11:27:42,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,381 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 451 flow. Second operand 4 states and 68 transitions. [2023-11-17 11:27:42,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 664 flow [2023-11-17 11:27:42,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 620 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:42,386 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 380 flow [2023-11-17 11:27:42,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-17 11:27:42,389 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-11-17 11:27:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 380 flow [2023-11-17 11:27:42,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:42,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:42,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:27:42,391 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1992036566, now seen corresponding path program 1 times [2023-11-17 11:27:42,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:42,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068077591] [2023-11-17 11:27:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:44,098 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 11:27:44,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:44,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068077591] [2023-11-17 11:27:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068077591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:44,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:27:44,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457758011] [2023-11-17 11:27:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 11:27:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 11:27:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:27:44,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2023-11-17 11:27:44,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:44,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2023-11-17 11:27:44,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:44,333 INFO L124 PetriNetUnfolderBase]: 47/131 cut-off events. [2023-11-17 11:27:44,333 INFO L125 PetriNetUnfolderBase]: For 393/402 co-relation queries the response was YES. [2023-11-17 11:27:44,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 131 events. 47/131 cut-off events. For 393/402 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 450 event pairs, 4 based on Foata normal form. 8/139 useless extension candidates. Maximal degree in co-relation 618. Up to 59 conditions per place. [2023-11-17 11:27:44,335 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 26 selfloop transitions, 30 changer transitions 14/74 dead transitions. [2023-11-17 11:27:44,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 716 flow [2023-11-17 11:27:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:27:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:27:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2023-11-17 11:27:44,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30864197530864196 [2023-11-17 11:27:44,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 150 transitions. [2023-11-17 11:27:44,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 150 transitions. [2023-11-17 11:27:44,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:44,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 150 transitions. [2023-11-17 11:27:44,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,340 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,340 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 380 flow. Second operand 9 states and 150 transitions. [2023-11-17 11:27:44,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 716 flow [2023-11-17 11:27:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 667 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-17 11:27:44,346 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 551 flow [2023-11-17 11:27:44,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=551, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-11-17 11:27:44,347 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-11-17 11:27:44,347 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 551 flow [2023-11-17 11:27:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:44,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:27:44,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:44,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1914144222, now seen corresponding path program 2 times [2023-11-17 11:27:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497273901] [2023-11-17 11:27:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:45,659 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 11:27:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497273901] [2023-11-17 11:27:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497273901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:45,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:27:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556605185] [2023-11-17 11:27:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:27:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:27:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:27:45,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2023-11-17 11:27:45,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 551 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:45,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:45,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2023-11-17 11:27:45,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:45,861 INFO L124 PetriNetUnfolderBase]: 38/113 cut-off events. [2023-11-17 11:27:45,861 INFO L125 PetriNetUnfolderBase]: For 466/474 co-relation queries the response was YES. [2023-11-17 11:27:45,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 113 events. 38/113 cut-off events. For 466/474 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 6 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 615. Up to 50 conditions per place. [2023-11-17 11:27:45,862 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 19 selfloop transitions, 8 changer transitions 39/68 dead transitions. [2023-11-17 11:27:45,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 757 flow [2023-11-17 11:27:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2023-11-17 11:27:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2023-11-17 11:27:45,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 119 transitions. [2023-11-17 11:27:45,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 119 transitions. [2023-11-17 11:27:45,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:45,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 119 transitions. [2023-11-17 11:27:45,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:45,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:45,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:45,867 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 551 flow. Second operand 7 states and 119 transitions. [2023-11-17 11:27:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 757 flow [2023-11-17 11:27:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 699 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-11-17 11:27:45,873 INFO L231 Difference]: Finished difference. Result has 70 places, 28 transitions, 242 flow [2023-11-17 11:27:45,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=70, PETRI_TRANSITIONS=28} [2023-11-17 11:27:45,874 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2023-11-17 11:27:45,874 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 28 transitions, 242 flow [2023-11-17 11:27:45,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:45,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:45,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:27:45,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:45,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:45,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1126005618, now seen corresponding path program 3 times [2023-11-17 11:27:45,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:45,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542517343] [2023-11-17 11:27:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:45,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:46,036 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 11:27:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542517343] [2023-11-17 11:27:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542517343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:46,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413568554] [2023-11-17 11:27:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:46,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:46,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2023-11-17 11:27:46,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 28 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:46,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2023-11-17 11:27:46,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:46,079 INFO L124 PetriNetUnfolderBase]: 14/45 cut-off events. [2023-11-17 11:27:46,079 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-17 11:27:46,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 45 events. 14/45 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 2 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 248. Up to 28 conditions per place. [2023-11-17 11:27:46,079 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-17 11:27:46,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 30 transitions, 324 flow [2023-11-17 11:27:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2023-11-17 11:27:46,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271604938271605 [2023-11-17 11:27:46,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2023-11-17 11:27:46,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2023-11-17 11:27:46,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:46,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2023-11-17 11:27:46,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,082 INFO L175 Difference]: Start difference. First operand has 70 places, 28 transitions, 242 flow. Second operand 3 states and 53 transitions. [2023-11-17 11:27:46,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 30 transitions, 324 flow [2023-11-17 11:27:46,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 212 flow, removed 12 selfloop flow, removed 26 redundant places. [2023-11-17 11:27:46,084 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-17 11:27:46,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-17 11:27:46,085 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-11-17 11:27:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-17 11:27:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:27:46,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:27:46,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:27:46,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 11:27:46,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:27:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:27:46,089 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:46,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:27:46,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:27:46,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:27:46 BasicIcfg [2023-11-17 11:27:46,097 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:27:46,098 INFO L158 Benchmark]: Toolchain (without parser) took 14891.32ms. Allocated memory was 178.3MB in the beginning and 541.1MB in the end (delta: 362.8MB). Free memory was 127.4MB in the beginning and 251.2MB in the end (delta: -123.8MB). Peak memory consumption was 239.8MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,098 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:27:46,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.13ms. Allocated memory is still 178.3MB. Free memory was 127.0MB in the beginning and 101.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.48ms. Allocated memory is still 178.3MB. Free memory was 101.8MB in the beginning and 98.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,099 INFO L158 Benchmark]: Boogie Preprocessor took 58.06ms. Allocated memory is still 178.3MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,099 INFO L158 Benchmark]: RCFGBuilder took 859.24ms. Allocated memory was 178.3MB in the beginning and 254.8MB in the end (delta: 76.5MB). Free memory was 96.6MB in the beginning and 176.1MB in the end (delta: -79.5MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,099 INFO L158 Benchmark]: TraceAbstraction took 13334.67ms. Allocated memory was 254.8MB in the beginning and 541.1MB in the end (delta: 286.3MB). Free memory was 175.6MB in the beginning and 251.2MB in the end (delta: -75.6MB). Peak memory consumption was 210.7MB. Max. memory is 8.0GB. [2023-11-17 11:27:46,100 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 573.13ms. Allocated memory is still 178.3MB. Free memory was 127.0MB in the beginning and 101.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.48ms. Allocated memory is still 178.3MB. Free memory was 101.8MB in the beginning and 98.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.06ms. Allocated memory is still 178.3MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 859.24ms. Allocated memory was 178.3MB in the beginning and 254.8MB in the end (delta: 76.5MB). Free memory was 96.6MB in the beginning and 176.1MB in the end (delta: -79.5MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. * TraceAbstraction took 13334.67ms. Allocated memory was 254.8MB in the beginning and 541.1MB in the end (delta: 286.3MB). Free memory was 175.6MB in the beginning and 251.2MB in the end (delta: -75.6MB). Peak memory consumption was 210.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 36 PlacesBefore, 26 PlacesAfterwards, 31 TransitionsBefore, 20 TransitionsAfterwards, 496 CoEnabledTransitionPairs, 6 FixpointIterations, 0 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 21 TotalNumberOfCompositions, 2183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 815, independent: 661, independent conditional: 0, independent unconditional: 661, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 392, independent: 345, independent conditional: 0, independent unconditional: 345, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 392, independent: 311, independent conditional: 0, independent unconditional: 311, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 81, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 398, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 340, dependent conditional: 0, dependent unconditional: 340, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 815, independent: 316, independent conditional: 0, independent unconditional: 316, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 392, unknown conditional: 0, unknown unconditional: 392] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 5 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: 13.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 754 IncrementalHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 4 mSDtfsCounter, 754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=551occurred in iteration=9, InterpolantAutomatonStates: 56, 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, 0.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 2128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:27:46,121 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...