/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:06:53,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:06:53,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:06:53,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:06:53,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:06:53,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:06:53,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:06:53,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:06:53,146 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:06:53,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:06:53,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:06:53,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:06:53,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:06:53,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:06:53,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:06:53,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:06:53,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:06:53,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:06:53,153 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:06:53,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:06:53,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:06:53,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:06:53,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:06:53,155 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:06:53,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:06:53,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:53,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:06:53,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:06:53,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:06:53,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:06:53,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:06:53,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:06:53,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:06:53,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:06:53,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:06:53,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:06:53,436 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:06:53,437 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:06:53,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-11-17 12:06:54,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:06:54,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:06:54,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-11-17 12:06:54,948 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ce9f19d/c4f433b5a82f4881b6738c9c46c1df0b/FLAGb3ea75dec [2023-11-17 12:06:54,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ce9f19d/c4f433b5a82f4881b6738c9c46c1df0b [2023-11-17 12:06:54,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:06:54,966 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:06:54,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:54,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:06:54,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:06:54,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:54" (1/1) ... [2023-11-17 12:06:54,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@deb7f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:54, skipping insertion in model container [2023-11-17 12:06:54,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:54" (1/1) ... [2023-11-17 12:06:55,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:06:55,165 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2023-11-17 12:06:55,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:55,180 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:06:55,203 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2023-11-17 12:06:55,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:55,217 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:55,218 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:55,224 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:06:55,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55 WrapperNode [2023-11-17 12:06:55,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:55,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:55,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:06:55,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:06:55,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,256 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-11-17 12:06:55,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:55,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:06:55,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:06:55,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:06:55,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:06:55,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:06:55,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:06:55,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:06:55,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (1/1) ... [2023-11-17 12:06:55,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:55,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:55,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:06:55,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:06:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:06:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:06:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:06:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:06:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:06:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:06:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:06:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:06:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:06:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:06:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:06:55,378 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:06:55,510 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:06:55,512 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:06:55,735 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:06:55,904 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:06:55,904 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 12:06:55,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:55 BoogieIcfgContainer [2023-11-17 12:06:55,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:06:55,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:06:55,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:06:55,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:06:55,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:06:54" (1/3) ... [2023-11-17 12:06:55,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6318c142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:55, skipping insertion in model container [2023-11-17 12:06:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:55" (2/3) ... [2023-11-17 12:06:55,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6318c142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:55, skipping insertion in model container [2023-11-17 12:06:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:55" (3/3) ... [2023-11-17 12:06:55,915 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-11-17 12:06:55,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:06:55,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:06:55,934 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:06:56,027 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:06:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2023-11-17 12:06:56,099 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2023-11-17 12:06:56,100 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:56,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 12:06:56,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2023-11-17 12:06:56,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2023-11-17 12:06:56,117 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:06:56,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 38 transitions, 94 flow [2023-11-17 12:06:56,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 38 transitions, 94 flow [2023-11-17 12:06:56,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 94 flow [2023-11-17 12:06:56,175 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2023-11-17 12:06:56,175 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:56,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 6/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 12:06:56,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 624 [2023-11-17 12:06:58,013 INFO L134 LiptonReduction]: Checked pairs total: 662 [2023-11-17 12:06:58,013 INFO L136 LiptonReduction]: Total number of compositions: 20 [2023-11-17 12:06:58,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:06:58,047 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;@3940dbdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:06:58,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:06:58,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:06:58,059 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 12:06:58,059 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:58,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:58,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:58,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:58,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 328302158, now seen corresponding path program 1 times [2023-11-17 12:06:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238878810] [2023-11-17 12:06:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238878810] [2023-11-17 12:06:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238878810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:06:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650643925] [2023-11-17 12:06:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:58,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:58,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2023-11-17 12:06:58,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:58,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2023-11-17 12:06:58,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:58,613 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-11-17 12:06:58,614 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-17 12:06:58,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1622 event pairs, 39 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-11-17 12:06:58,620 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-11-17 12:06:58,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-11-17 12:06:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-17 12:06:58,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-11-17 12:06:58,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-17 12:06:58,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-17 12:06:58,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:58,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-17 12:06:58,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,644 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 84 transitions. [2023-11-17 12:06:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-11-17 12:06:58,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:06:58,650 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-11-17 12:06:58,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-11-17 12:06:58,655 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-11-17 12:06:58,655 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-11-17 12:06:58,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:58,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:58,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:06:58,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:58,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1733634197, now seen corresponding path program 1 times [2023-11-17 12:06:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245938848] [2023-11-17 12:06:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245938848] [2023-11-17 12:06:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245938848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:58,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:06:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495995704] [2023-11-17 12:06:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:58,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:58,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:58,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2023-11-17 12:06:58,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:58,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2023-11-17 12:06:58,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:58,975 INFO L124 PetriNetUnfolderBase]: 281/398 cut-off events. [2023-11-17 12:06:58,975 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-17 12:06:58,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 398 events. 281/398 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1216 event pairs, 52 based on Foata normal form. 32/430 useless extension candidates. Maximal degree in co-relation 207. Up to 313 conditions per place. [2023-11-17 12:06:58,981 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 29 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-17 12:06:58,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 168 flow [2023-11-17 12:06:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 12:06:58,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-17 12:06:58,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 12:06:58,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 12:06:58,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:58,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 12:06:58,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,991 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 3 states and 87 transitions. [2023-11-17 12:06:58,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 168 flow [2023-11-17 12:06:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:58,993 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 87 flow [2023-11-17 12:06:58,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-11-17 12:06:58,995 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-17 12:06:58,996 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 87 flow [2023-11-17 12:06:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:58,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:58,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:06:58,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:58,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -309862300, now seen corresponding path program 1 times [2023-11-17 12:06:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804810519] [2023-11-17 12:06:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804810519] [2023-11-17 12:06:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804810519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:59,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:06:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088919943] [2023-11-17 12:06:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:59,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2023-11-17 12:06:59,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:59,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2023-11-17 12:06:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:59,194 INFO L124 PetriNetUnfolderBase]: 241/352 cut-off events. [2023-11-17 12:06:59,195 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-17 12:06:59,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 352 events. 241/352 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1042 event pairs, 34 based on Foata normal form. 29/380 useless extension candidates. Maximal degree in co-relation 662. Up to 261 conditions per place. [2023-11-17 12:06:59,198 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 31 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-17 12:06:59,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 194 flow [2023-11-17 12:06:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 12:06:59,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-17 12:06:59,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:59,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,202 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 87 flow. Second operand 3 states and 87 transitions. [2023-11-17 12:06:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 194 flow [2023-11-17 12:06:59,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:59,205 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 101 flow [2023-11-17 12:06:59,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-17 12:06:59,206 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-17 12:06:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 101 flow [2023-11-17 12:06:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:59,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:06:59,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:59,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash 214506955, now seen corresponding path program 1 times [2023-11-17 12:06:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389484004] [2023-11-17 12:06:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:59,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:06:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389484004] [2023-11-17 12:06:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389484004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:59,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:59,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:06:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794308460] [2023-11-17 12:06:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:59,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:59,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2023-11-17 12:06:59,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:59,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2023-11-17 12:06:59,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:59,390 INFO L124 PetriNetUnfolderBase]: 220/334 cut-off events. [2023-11-17 12:06:59,390 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-17 12:06:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 334 events. 220/334 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 986 event pairs, 40 based on Foata normal form. 23/353 useless extension candidates. Maximal degree in co-relation 464. Up to 199 conditions per place. [2023-11-17 12:06:59,394 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-17 12:06:59,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 222 flow [2023-11-17 12:06:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 12:06:59,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-17 12:06:59,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:59,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 12:06:59,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,397 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 101 flow. Second operand 3 states and 87 transitions. [2023-11-17 12:06:59,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 222 flow [2023-11-17 12:06:59,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:59,399 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 115 flow [2023-11-17 12:06:59,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-11-17 12:06:59,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-17 12:06:59,400 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 115 flow [2023-11-17 12:06:59,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:59,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:59,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:59,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:06:59,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:59,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -457501172, now seen corresponding path program 1 times [2023-11-17 12:06:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227061303] [2023-11-17 12:06:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:59,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227061303] [2023-11-17 12:06:59,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227061303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:06:59,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372534477] [2023-11-17 12:06:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:59,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:59,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:06:59,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:06:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:59,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:06:59,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:06:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:59,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372534477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:00,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:00,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 8 [2023-11-17 12:07:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418939317] [2023-11-17 12:07:00,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:00,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:07:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:07:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:07:00,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2023-11-17 12:07:00,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 115 flow. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:00,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2023-11-17 12:07:00,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:00,648 INFO L124 PetriNetUnfolderBase]: 379/553 cut-off events. [2023-11-17 12:07:00,648 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-11-17 12:07:00,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 553 events. 379/553 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1706 event pairs, 2 based on Foata normal form. 64/617 useless extension candidates. Maximal degree in co-relation 698. Up to 291 conditions per place. [2023-11-17 12:07:00,652 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 119 selfloop transitions, 51 changer transitions 0/173 dead transitions. [2023-11-17 12:07:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 173 transitions, 1059 flow [2023-11-17 12:07:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 12:07:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 12:07:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 460 transitions. [2023-11-17 12:07:00,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2023-11-17 12:07:00,656 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 460 transitions. [2023-11-17 12:07:00,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 460 transitions. [2023-11-17 12:07:00,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:00,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 460 transitions. [2023-11-17 12:07:00,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 20.90909090909091) internal successors, (460), 22 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 62.0) internal successors, (1426), 23 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,661 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 62.0) internal successors, (1426), 23 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,661 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 115 flow. Second operand 22 states and 460 transitions. [2023-11-17 12:07:00,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 173 transitions, 1059 flow [2023-11-17 12:07:00,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 173 transitions, 1046 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:07:00,665 INFO L231 Difference]: Finished difference. Result has 66 places, 80 transitions, 629 flow [2023-11-17 12:07:00,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=629, PETRI_PLACES=66, PETRI_TRANSITIONS=80} [2023-11-17 12:07:00,666 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-17 12:07:00,666 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 80 transitions, 629 flow [2023-11-17 12:07:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:00,667 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:00,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 12:07:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:00,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:00,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1269116438, now seen corresponding path program 2 times [2023-11-17 12:07:00,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:00,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635718955] [2023-11-17 12:07:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:01,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:01,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635718955] [2023-11-17 12:07:01,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635718955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:01,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734388472] [2023-11-17 12:07:01,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:07:01,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:01,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:01,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:01,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:07:01,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:07:01,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:07:01,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:07:01,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:07:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734388472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:02,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 15 [2023-11-17 12:07:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856602846] [2023-11-17 12:07:02,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 12:07:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 12:07:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-17 12:07:02,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:07:02,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 80 transitions, 629 flow. Second operand has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:02,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:02,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:07:02,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:02,742 INFO L124 PetriNetUnfolderBase]: 792/1161 cut-off events. [2023-11-17 12:07:02,742 INFO L125 PetriNetUnfolderBase]: For 9833/9833 co-relation queries the response was YES. [2023-11-17 12:07:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 1161 events. 792/1161 cut-off events. For 9833/9833 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4207 event pairs, 0 based on Foata normal form. 71/1232 useless extension candidates. Maximal degree in co-relation 5060. Up to 627 conditions per place. [2023-11-17 12:07:02,760 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 171 selfloop transitions, 104 changer transitions 3/281 dead transitions. [2023-11-17 12:07:02,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 281 transitions, 2805 flow [2023-11-17 12:07:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 12:07:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 12:07:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 338 transitions. [2023-11-17 12:07:02,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25960061443932414 [2023-11-17 12:07:02,763 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 338 transitions. [2023-11-17 12:07:02,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 338 transitions. [2023-11-17 12:07:02,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:02,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 338 transitions. [2023-11-17 12:07:02,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 16.095238095238095) internal successors, (338), 21 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:02,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 62.0) internal successors, (1364), 22 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:02,767 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 62.0) internal successors, (1364), 22 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:02,768 INFO L175 Difference]: Start difference. First operand has 66 places, 80 transitions, 629 flow. Second operand 21 states and 338 transitions. [2023-11-17 12:07:02,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 281 transitions, 2805 flow [2023-11-17 12:07:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 281 transitions, 2601 flow, removed 90 selfloop flow, removed 2 redundant places. [2023-11-17 12:07:02,804 INFO L231 Difference]: Finished difference. Result has 95 places, 144 transitions, 1570 flow [2023-11-17 12:07:02,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1570, PETRI_PLACES=95, PETRI_TRANSITIONS=144} [2023-11-17 12:07:02,807 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-11-17 12:07:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 144 transitions, 1570 flow [2023-11-17 12:07:02,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:02,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:02,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:02,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:03,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 12:07:03,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:03,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1265984321, now seen corresponding path program 3 times [2023-11-17 12:07:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541253820] [2023-11-17 12:07:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:07:03,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541253820] [2023-11-17 12:07:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541253820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950248704] [2023-11-17 12:07:03,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:07:03,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:03,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:03,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:07:03,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:07:03,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:03,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:07:03,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:07:03,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:07:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950248704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:04,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-11-17 12:07:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064684165] [2023-11-17 12:07:04,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:04,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:07:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:07:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:07:04,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2023-11-17 12:07:04,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 144 transitions, 1570 flow. Second operand has 13 states, 13 states have (on average 18.0) internal successors, (234), 13 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:04,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:04,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2023-11-17 12:07:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:04,726 INFO L124 PetriNetUnfolderBase]: 1104/1619 cut-off events. [2023-11-17 12:07:04,726 INFO L125 PetriNetUnfolderBase]: For 23554/23556 co-relation queries the response was YES. [2023-11-17 12:07:04,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12018 conditions, 1619 events. 1104/1619 cut-off events. For 23554/23556 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6311 event pairs, 25 based on Foata normal form. 100/1718 useless extension candidates. Maximal degree in co-relation 11461. Up to 863 conditions per place. [2023-11-17 12:07:04,753 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 217 selfloop transitions, 112 changer transitions 0/332 dead transitions. [2023-11-17 12:07:04,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 332 transitions, 4164 flow [2023-11-17 12:07:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:07:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:07:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 391 transitions. [2023-11-17 12:07:04,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2023-11-17 12:07:04,755 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 391 transitions. [2023-11-17 12:07:04,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 391 transitions. [2023-11-17 12:07:04,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:04,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 391 transitions. [2023-11-17 12:07:04,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 23.0) internal successors, (391), 17 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:04,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 62.0) internal successors, (1116), 18 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:04,759 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 62.0) internal successors, (1116), 18 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:04,759 INFO L175 Difference]: Start difference. First operand has 95 places, 144 transitions, 1570 flow. Second operand 17 states and 391 transitions. [2023-11-17 12:07:04,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 332 transitions, 4164 flow [2023-11-17 12:07:04,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 332 transitions, 3827 flow, removed 161 selfloop flow, removed 3 redundant places. [2023-11-17 12:07:04,827 INFO L231 Difference]: Finished difference. Result has 111 places, 190 transitions, 2230 flow [2023-11-17 12:07:04,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2230, PETRI_PLACES=111, PETRI_TRANSITIONS=190} [2023-11-17 12:07:04,828 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2023-11-17 12:07:04,828 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 190 transitions, 2230 flow [2023-11-17 12:07:04,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.0) internal successors, (234), 13 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:04,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:04,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:04,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:05,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:05,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1712080369, now seen corresponding path program 4 times [2023-11-17 12:07:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310743141] [2023-11-17 12:07:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 12:07:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:05,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310743141] [2023-11-17 12:07:05,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310743141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932753818] [2023-11-17 12:07:05,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:07:05,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:05,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:05,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:05,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:07:05,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:07:05,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:05,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:07:05,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:07:05,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 12:07:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932753818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:05,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2023-11-17 12:07:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330236252] [2023-11-17 12:07:05,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 12:07:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 12:07:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:07:05,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2023-11-17 12:07:05,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 190 transitions, 2230 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:05,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:05,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2023-11-17 12:07:05,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:06,001 INFO L124 PetriNetUnfolderBase]: 1106/1629 cut-off events. [2023-11-17 12:07:06,001 INFO L125 PetriNetUnfolderBase]: For 23291/23293 co-relation queries the response was YES. [2023-11-17 12:07:06,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12008 conditions, 1629 events. 1106/1629 cut-off events. For 23291/23293 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6412 event pairs, 31 based on Foata normal form. 30/1658 useless extension candidates. Maximal degree in co-relation 11475. Up to 759 conditions per place. [2023-11-17 12:07:06,028 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 130 selfloop transitions, 106 changer transitions 0/239 dead transitions. [2023-11-17 12:07:06,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 239 transitions, 3268 flow [2023-11-17 12:07:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:07:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:07:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2023-11-17 12:07:06,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2023-11-17 12:07:06,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 198 transitions. [2023-11-17 12:07:06,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 198 transitions. [2023-11-17 12:07:06,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:06,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 198 transitions. [2023-11-17 12:07:06,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.75) internal successors, (198), 8 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:06,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:06,033 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:06,033 INFO L175 Difference]: Start difference. First operand has 111 places, 190 transitions, 2230 flow. Second operand 8 states and 198 transitions. [2023-11-17 12:07:06,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 239 transitions, 3268 flow [2023-11-17 12:07:06,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 239 transitions, 2837 flow, removed 161 selfloop flow, removed 10 redundant places. [2023-11-17 12:07:06,114 INFO L231 Difference]: Finished difference. Result has 109 places, 186 transitions, 2141 flow [2023-11-17 12:07:06,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2141, PETRI_PLACES=109, PETRI_TRANSITIONS=186} [2023-11-17 12:07:06,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2023-11-17 12:07:06,117 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 186 transitions, 2141 flow [2023-11-17 12:07:06,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:06,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:06,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:06,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:06,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1584941586, now seen corresponding path program 5 times [2023-11-17 12:07:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163259242] [2023-11-17 12:07:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163259242] [2023-11-17 12:07:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163259242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805409878] [2023-11-17 12:07:07,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:07:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:07,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:07,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:07:07,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 12:07:07,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:07,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 12:07:07,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:07,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805409878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:08,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:08,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-11-17 12:07:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766574751] [2023-11-17 12:07:08,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:08,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 12:07:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 12:07:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-11-17 12:07:08,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:07:08,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 186 transitions, 2141 flow. Second operand has 24 states, 24 states have (on average 9.333333333333334) internal successors, (224), 24 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:08,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:08,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:07:08,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:12,000 INFO L124 PetriNetUnfolderBase]: 5033/7309 cut-off events. [2023-11-17 12:07:12,001 INFO L125 PetriNetUnfolderBase]: For 91381/91381 co-relation queries the response was YES. [2023-11-17 12:07:12,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51747 conditions, 7309 events. 5033/7309 cut-off events. For 91381/91381 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 37906 event pairs, 0 based on Foata normal form. 102/7411 useless extension candidates. Maximal degree in co-relation 49620. Up to 3657 conditions per place. [2023-11-17 12:07:12,099 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 375 selfloop transitions, 851 changer transitions 3/1232 dead transitions. [2023-11-17 12:07:12,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1232 transitions, 16115 flow [2023-11-17 12:07:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-17 12:07:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-17 12:07:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 952 transitions. [2023-11-17 12:07:12,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26025150355385457 [2023-11-17 12:07:12,107 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 952 transitions. [2023-11-17 12:07:12,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 952 transitions. [2023-11-17 12:07:12,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:12,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 952 transitions. [2023-11-17 12:07:12,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 16.135593220338983) internal successors, (952), 59 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 62.0) internal successors, (3720), 60 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:12,121 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 62.0) internal successors, (3720), 60 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:12,121 INFO L175 Difference]: Start difference. First operand has 109 places, 186 transitions, 2141 flow. Second operand 59 states and 952 transitions. [2023-11-17 12:07:12,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 1232 transitions, 16115 flow [2023-11-17 12:07:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1232 transitions, 15191 flow, removed 211 selfloop flow, removed 6 redundant places. [2023-11-17 12:07:12,485 INFO L231 Difference]: Finished difference. Result has 194 places, 945 transitions, 14609 flow [2023-11-17 12:07:12,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=14609, PETRI_PLACES=194, PETRI_TRANSITIONS=945} [2023-11-17 12:07:12,487 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2023-11-17 12:07:12,487 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 945 transitions, 14609 flow [2023-11-17 12:07:12,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.333333333333334) internal successors, (224), 24 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:12,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:12,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:12,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:12,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:12,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1736560250, now seen corresponding path program 6 times [2023-11-17 12:07:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:12,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313461845] [2023-11-17 12:07:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:12,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313461845] [2023-11-17 12:07:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313461845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634858852] [2023-11-17 12:07:13,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:07:13,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:13,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:13,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:13,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 12:07:13,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 12:07:13,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:13,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 12:07:13,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:13,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:14,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634858852] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:14,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:14,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 19 [2023-11-17 12:07:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237071513] [2023-11-17 12:07:14,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 12:07:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 12:07:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:07:14,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:07:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 945 transitions, 14609 flow. Second operand has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:07:14,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:19,926 INFO L124 PetriNetUnfolderBase]: 6882/9980 cut-off events. [2023-11-17 12:07:19,927 INFO L125 PetriNetUnfolderBase]: For 279811/279811 co-relation queries the response was YES. [2023-11-17 12:07:19,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87505 conditions, 9980 events. 6882/9980 cut-off events. For 279811/279811 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 54311 event pairs, 24 based on Foata normal form. 2/9982 useless extension candidates. Maximal degree in co-relation 86494. Up to 4957 conditions per place. [2023-11-17 12:07:20,054 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 725 selfloop transitions, 1118 changer transitions 8/1854 dead transitions. [2023-11-17 12:07:20,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1854 transitions, 31678 flow [2023-11-17 12:07:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-17 12:07:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2023-11-17 12:07:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 1125 transitions. [2023-11-17 12:07:20,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21861640108822386 [2023-11-17 12:07:20,059 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 1125 transitions. [2023-11-17 12:07:20,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 1125 transitions. [2023-11-17 12:07:20,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:20,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 1125 transitions. [2023-11-17 12:07:20,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 13.55421686746988) internal successors, (1125), 83 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:20,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 62.0) internal successors, (5208), 84 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:20,069 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 62.0) internal successors, (5208), 84 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:20,069 INFO L175 Difference]: Start difference. First operand has 194 places, 945 transitions, 14609 flow. Second operand 83 states and 1125 transitions. [2023-11-17 12:07:20,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1854 transitions, 31678 flow [2023-11-17 12:07:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1854 transitions, 25628 flow, removed 3003 selfloop flow, removed 3 redundant places. [2023-11-17 12:07:22,170 INFO L231 Difference]: Finished difference. Result has 295 places, 1553 transitions, 23793 flow [2023-11-17 12:07:22,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=11591, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=23793, PETRI_PLACES=295, PETRI_TRANSITIONS=1553} [2023-11-17 12:07:22,172 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 266 predicate places. [2023-11-17 12:07:22,172 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1553 transitions, 23793 flow [2023-11-17 12:07:22,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:22,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:22,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:22,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:22,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:22,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -840460370, now seen corresponding path program 7 times [2023-11-17 12:07:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958597969] [2023-11-17 12:07:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958597969] [2023-11-17 12:07:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958597969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108412097] [2023-11-17 12:07:23,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:07:23,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:23,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:23,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:23,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 12:07:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:23,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 12:07:23,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:23,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:24,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108412097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:24,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:24,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2023-11-17 12:07:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048562474] [2023-11-17 12:07:24,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:07:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:07:24,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:07:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:07:24,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1553 transitions, 23793 flow. Second operand has 26 states, 26 states have (on average 9.23076923076923) internal successors, (240), 26 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:24,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:24,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:07:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:39,075 INFO L124 PetriNetUnfolderBase]: 15959/23322 cut-off events. [2023-11-17 12:07:39,075 INFO L125 PetriNetUnfolderBase]: For 698627/698627 co-relation queries the response was YES. [2023-11-17 12:07:39,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191647 conditions, 23322 events. 15959/23322 cut-off events. For 698627/698627 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 146830 event pairs, 42 based on Foata normal form. 142/23464 useless extension candidates. Maximal degree in co-relation 190967. Up to 6331 conditions per place. [2023-11-17 12:07:39,633 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 980 selfloop transitions, 3600 changer transitions 98/4681 dead transitions. [2023-11-17 12:07:39,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 4681 transitions, 78774 flow [2023-11-17 12:07:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-11-17 12:07:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2023-11-17 12:07:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 2036 transitions. [2023-11-17 12:07:39,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2396986107840829 [2023-11-17 12:07:39,654 INFO L72 ComplementDD]: Start complementDD. Operand 137 states and 2036 transitions. [2023-11-17 12:07:39,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 2036 transitions. [2023-11-17 12:07:39,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:39,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 137 states and 2036 transitions. [2023-11-17 12:07:39,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 138 states, 137 states have (on average 14.861313868613138) internal successors, (2036), 137 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:39,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 138 states, 138 states have (on average 62.0) internal successors, (8556), 138 states have internal predecessors, (8556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:39,683 INFO L81 ComplementDD]: Finished complementDD. Result has 138 states, 138 states have (on average 62.0) internal successors, (8556), 138 states have internal predecessors, (8556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:39,683 INFO L175 Difference]: Start difference. First operand has 295 places, 1553 transitions, 23793 flow. Second operand 137 states and 2036 transitions. [2023-11-17 12:07:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 4681 transitions, 78774 flow [2023-11-17 12:07:50,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 4681 transitions, 73083 flow, removed 2772 selfloop flow, removed 14 redundant places. [2023-11-17 12:07:50,807 INFO L231 Difference]: Finished difference. Result has 452 places, 4063 transitions, 72821 flow [2023-11-17 12:07:50,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=21318, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=72821, PETRI_PLACES=452, PETRI_TRANSITIONS=4063} [2023-11-17 12:07:50,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 423 predicate places. [2023-11-17 12:07:50,810 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 4063 transitions, 72821 flow [2023-11-17 12:07:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.23076923076923) internal successors, (240), 26 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:50,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:51,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:51,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -905012206, now seen corresponding path program 8 times [2023-11-17 12:07:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:51,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440992621] [2023-11-17 12:07:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:51,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:51,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440992621] [2023-11-17 12:07:51,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440992621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:51,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753303124] [2023-11-17 12:07:51,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:07:51,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:51,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:51,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 12:07:51,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:07:51,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:51,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 12:07:51,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:52,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:52,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753303124] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:52,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:52,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2023-11-17 12:07:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438521323] [2023-11-17 12:07:52,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:52,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:07:52,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:52,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:07:52,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:07:52,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:07:52,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 4063 transitions, 72821 flow. Second operand has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:52,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:52,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:07:52,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:12,761 INFO L124 PetriNetUnfolderBase]: 19006/28314 cut-off events. [2023-11-17 12:08:12,761 INFO L125 PetriNetUnfolderBase]: For 997261/997261 co-relation queries the response was YES. [2023-11-17 12:08:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255324 conditions, 28314 events. 19006/28314 cut-off events. For 997261/997261 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 189484 event pairs, 50 based on Foata normal form. 58/28358 useless extension candidates. Maximal degree in co-relation 254155. Up to 10189 conditions per place. [2023-11-17 12:08:13,549 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 1412 selfloop transitions, 3920 changer transitions 39/5374 dead transitions. [2023-11-17 12:08:13,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 5374 transitions, 107711 flow [2023-11-17 12:08:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-17 12:08:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-17 12:08:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 689 transitions. [2023-11-17 12:08:13,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2525659824046921 [2023-11-17 12:08:13,552 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 689 transitions. [2023-11-17 12:08:13,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 689 transitions. [2023-11-17 12:08:13,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:13,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 689 transitions. [2023-11-17 12:08:13,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 15.659090909090908) internal successors, (689), 44 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:13,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 62.0) internal successors, (2790), 45 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:13,558 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 62.0) internal successors, (2790), 45 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:13,558 INFO L175 Difference]: Start difference. First operand has 452 places, 4063 transitions, 72821 flow. Second operand 44 states and 689 transitions. [2023-11-17 12:08:13,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 5374 transitions, 107711 flow [2023-11-17 12:08:51,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 5374 transitions, 96662 flow, removed 5472 selfloop flow, removed 11 redundant places. [2023-11-17 12:08:51,458 INFO L231 Difference]: Finished difference. Result has 501 places, 5119 transitions, 99593 flow [2023-11-17 12:08:51,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=65212, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2927, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=99593, PETRI_PLACES=501, PETRI_TRANSITIONS=5119} [2023-11-17 12:08:51,462 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-11-17 12:08:51,463 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 5119 transitions, 99593 flow [2023-11-17 12:08:51,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:51,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:08:51,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 12:08:51,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 12:08:51,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:08:51,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash 889215750, now seen corresponding path program 9 times [2023-11-17 12:08:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:51,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160357468] [2023-11-17 12:08:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:52,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:52,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160357468] [2023-11-17 12:08:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160357468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745867871] [2023-11-17 12:08:52,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:08:52,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:52,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:52,240 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:08:52,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 12:08:52,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:08:52,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:08:52,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 12:08:52,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:52,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:08:53,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745867871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:53,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:53,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-11-17 12:08:53,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848429801] [2023-11-17 12:08:53,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:53,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:08:53,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:08:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:08:53,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:08:53,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 5119 transitions, 99593 flow. Second operand has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 23 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:53,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:08:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:44,066 INFO L124 PetriNetUnfolderBase]: 34977/50260 cut-off events. [2023-11-17 12:09:44,067 INFO L125 PetriNetUnfolderBase]: For 1461432/1461432 co-relation queries the response was YES. [2023-11-17 12:09:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473251 conditions, 50260 events. 34977/50260 cut-off events. For 1461432/1461432 co-relation queries the response was YES. Maximal size of possible extension queue 2586. Compared 338596 event pairs, 382 based on Foata normal form. 297/50493 useless extension candidates. Maximal degree in co-relation 472444. Up to 12391 conditions per place. [2023-11-17 12:09:45,848 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 2761 selfloop transitions, 6931 changer transitions 121/9816 dead transitions. [2023-11-17 12:09:45,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 9816 transitions, 213694 flow [2023-11-17 12:09:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-17 12:09:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-17 12:09:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1001 transitions. [2023-11-17 12:09:45,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26040582726326744 [2023-11-17 12:09:45,850 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1001 transitions. [2023-11-17 12:09:45,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1001 transitions. [2023-11-17 12:09:45,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:45,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1001 transitions. [2023-11-17 12:09:45,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 16.14516129032258) internal successors, (1001), 62 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:09:45,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 62.0) internal successors, (3906), 63 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:09:45,856 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 62.0) internal successors, (3906), 63 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:09:45,857 INFO L175 Difference]: Start difference. First operand has 501 places, 5119 transitions, 99593 flow. Second operand 62 states and 1001 transitions. [2023-11-17 12:09:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 9816 transitions, 213694 flow [2023-11-17 12:12:15,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 9816 transitions, 202265 flow, removed 5444 selfloop flow, removed 22 redundant places. [2023-11-17 12:12:15,378 INFO L231 Difference]: Finished difference. Result has 572 places, 9096 transitions, 199870 flow [2023-11-17 12:12:15,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=94890, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=199870, PETRI_PLACES=572, PETRI_TRANSITIONS=9096} [2023-11-17 12:12:15,384 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 543 predicate places. [2023-11-17 12:12:15,385 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 9096 transitions, 199870 flow [2023-11-17 12:12:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 23 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:15,385 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:12:15,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 12:12:15,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 12:12:15,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:15,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 586385168, now seen corresponding path program 10 times [2023-11-17 12:12:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265634476] [2023-11-17 12:12:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:15,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265634476] [2023-11-17 12:12:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265634476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513323437] [2023-11-17 12:12:16,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:12:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:16,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:16,061 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:12:16,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 12:12:16,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:12:16,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:12:16,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 12:12:16,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:16,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513323437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:12:16,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:12:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-11-17 12:12:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536871776] [2023-11-17 12:12:16,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:12:16,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 12:12:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 12:12:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-17 12:12:16,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 62 [2023-11-17 12:12:16,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 9096 transitions, 199870 flow. Second operand has 22 states, 22 states have (on average 9.545454545454545) internal successors, (210), 22 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:16,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:16,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 62 [2023-11-17 12:12:16,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:14:07,719 INFO L124 PetriNetUnfolderBase]: 41879/60092 cut-off events. [2023-11-17 12:14:07,719 INFO L125 PetriNetUnfolderBase]: For 1118946/1118946 co-relation queries the response was YES. [2023-11-17 12:14:09,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594570 conditions, 60092 events. 41879/60092 cut-off events. For 1118946/1118946 co-relation queries the response was YES. Maximal size of possible extension queue 2985. Compared 413061 event pairs, 734 based on Foata normal form. 134/60218 useless extension candidates. Maximal degree in co-relation 593787. Up to 16165 conditions per place. [2023-11-17 12:14:09,671 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 4963 selfloop transitions, 6392 changer transitions 121/11479 dead transitions. [2023-11-17 12:14:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 11479 transitions, 273529 flow [2023-11-17 12:14:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 12:14:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 12:14:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 559 transitions. [2023-11-17 12:14:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25044802867383514 [2023-11-17 12:14:09,674 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 559 transitions. [2023-11-17 12:14:09,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 559 transitions. [2023-11-17 12:14:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:14:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 559 transitions. [2023-11-17 12:14:09,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 15.527777777777779) internal successors, (559), 36 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:09,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 62.0) internal successors, (2294), 37 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:09,678 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 62.0) internal successors, (2294), 37 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:09,678 INFO L175 Difference]: Start difference. First operand has 572 places, 9096 transitions, 199870 flow. Second operand 36 states and 559 transitions. [2023-11-17 12:14:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 11479 transitions, 273529 flow Received shutdown request... [2023-11-17 12:15:22,595 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:15:22,595 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:15:22,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:15:22,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-17 12:15:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 12:15:22,896 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 12:15:22,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:15:22,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:15:22,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:15:22,898 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1] [2023-11-17 12:15:22,901 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:15:22,901 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:15:22,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:15:22 BasicIcfg [2023-11-17 12:15:22,903 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:15:22,904 INFO L158 Benchmark]: Toolchain (without parser) took 507937.83ms. Allocated memory was 224.4MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 182.4MB in the beginning and 837.6MB in the end (delta: -655.2MB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-11-17 12:15:22,904 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 224.4MB. Free memory is still 183.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:15:22,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.05ms. Allocated memory is still 224.4MB. Free memory was 181.9MB in the beginning and 170.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:15:22,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.98ms. Allocated memory is still 224.4MB. Free memory was 170.4MB in the beginning and 168.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:15:22,905 INFO L158 Benchmark]: Boogie Preprocessor took 28.25ms. Allocated memory is still 224.4MB. Free memory was 168.7MB in the beginning and 167.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:15:22,905 INFO L158 Benchmark]: RCFGBuilder took 619.29ms. Allocated memory is still 224.4MB. Free memory was 167.3MB in the beginning and 135.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-11-17 12:15:22,905 INFO L158 Benchmark]: TraceAbstraction took 506995.24ms. Allocated memory was 224.4MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 135.2MB in the beginning and 837.6MB in the end (delta: -702.4MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-11-17 12:15:22,906 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 224.4MB. Free memory is still 183.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 256.05ms. Allocated memory is still 224.4MB. Free memory was 181.9MB in the beginning and 170.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.98ms. Allocated memory is still 224.4MB. Free memory was 170.4MB in the beginning and 168.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.25ms. Allocated memory is still 224.4MB. Free memory was 168.7MB in the beginning and 167.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 619.29ms. Allocated memory is still 224.4MB. Free memory was 167.3MB in the beginning and 135.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 506995.24ms. Allocated memory was 224.4MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 135.2MB in the beginning and 837.6MB in the end (delta: -702.4MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 42 PlacesBefore, 29 PlacesAfterwards, 38 TransitionsBefore, 22 TransitionsAfterwards, 624 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 20 TotalNumberOfCompositions, 662 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 662, independent: 662, independent conditional: 0, independent unconditional: 662, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 395, independent: 395, independent conditional: 0, independent unconditional: 395, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 395, independent: 377, independent conditional: 0, independent unconditional: 377, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 208, independent: 208, independent conditional: 0, independent unconditional: 208, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 662, independent: 267, independent conditional: 0, independent unconditional: 267, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 395, unknown conditional: 0, unknown unconditional: 395] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 61 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 506.8s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 488.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2484 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2484 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 816 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10392 IncrementalHoareTripleChecker+Invalid, 11208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 816 mSolverCounterUnsat, 0 mSDtfsCounter, 10392 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 930 GetRequests, 368 SyntacticMatches, 6 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16653 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199870occurred in iteration=13, InterpolantAutomatonStates: 465, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 566 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 775 ConstructedInterpolants, 0 QuantifiedInterpolants, 9003 SizeOfPredicates, 77 NumberOfNonLiveVariables, 1841 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 52/232 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown