/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:11:47,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:11:47,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:11:47,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:11:47,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:11:47,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:11:47,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:11:47,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:11:47,631 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:11:47,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:11:47,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:11:47,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:11:47,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:11:47,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:11:47,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:11:47,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:11:47,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:11:47,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:11:47,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:11:47,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:11:47,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:11:47,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:11:47,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:11:47,639 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:11:47,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:11:47,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:11:47,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:11:47,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:11:47,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:11:47,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:11:47,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:11:47,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:11:47,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:11:47,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:11:47,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:11:47,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:11:47,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:11:47,905 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:11:47,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-11-17 16:11:49,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:11:49,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:11:49,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-11-17 16:11:49,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6652791c8/86f651e907474b9389b2e1dceb91b45a/FLAG57d130cd9 [2023-11-17 16:11:49,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6652791c8/86f651e907474b9389b2e1dceb91b45a [2023-11-17 16:11:49,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:11:49,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:11:49,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:11:49,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:11:49,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:11:49,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a7fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49, skipping insertion in model container [2023-11-17 16:11:49,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:11:49,560 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2023-11-17 16:11:49,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:11:49,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:11:49,615 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2023-11-17 16:11:49,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:11:49,627 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:11:49,627 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:11:49,634 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:11:49,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49 WrapperNode [2023-11-17 16:11:49,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:11:49,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:11:49,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:11:49,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:11:49,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,697 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 481 [2023-11-17 16:11:49,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:11:49,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:11:49,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:11:49,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:11:49,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:11:49,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:11:49,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:11:49,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:11:49,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (1/1) ... [2023-11-17 16:11:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:11:49,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:11:49,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:11:49,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:11:49,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:11:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:11:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:11:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:11:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:11:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:11:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:11:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:11:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:11:49,826 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:11:49,970 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:11:49,972 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:11:50,642 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:11:50,863 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:11:50,864 INFO L307 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-17 16:11:50,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:11:50 BoogieIcfgContainer [2023-11-17 16:11:50,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:11:50,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:11:50,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:11:50,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:11:50,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:11:49" (1/3) ... [2023-11-17 16:11:50,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a40ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:11:50, skipping insertion in model container [2023-11-17 16:11:50,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:11:49" (2/3) ... [2023-11-17 16:11:50,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a40ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:11:50, skipping insertion in model container [2023-11-17 16:11:50,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:11:50" (3/3) ... [2023-11-17 16:11:50,872 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-17 16:11:50,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:11:50,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:11:50,887 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:11:50,970 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 16:11:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 350 transitions, 728 flow [2023-11-17 16:11:51,118 INFO L124 PetriNetUnfolderBase]: 25/346 cut-off events. [2023-11-17 16:11:51,118 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:11:51,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 346 events. 25/346 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 304. Up to 2 conditions per place. [2023-11-17 16:11:51,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 350 transitions, 728 flow [2023-11-17 16:11:51,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 333 transitions, 690 flow [2023-11-17 16:11:51,141 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:11:51,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 333 transitions, 690 flow [2023-11-17 16:11:51,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 333 transitions, 690 flow [2023-11-17 16:11:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 333 transitions, 690 flow [2023-11-17 16:11:51,242 INFO L124 PetriNetUnfolderBase]: 25/333 cut-off events. [2023-11-17 16:11:51,242 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:11:51,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 333 events. 25/333 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 304. Up to 2 conditions per place. [2023-11-17 16:11:51,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 3336 [2023-11-17 16:12:02,929 INFO L134 LiptonReduction]: Checked pairs total: 7670 [2023-11-17 16:12:02,929 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-11-17 16:12:02,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:12:02,946 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;@505e38c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:12:02,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 16:12:02,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:12:02,954 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2023-11-17 16:12:02,954 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:12:02,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:02,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:02,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:02,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1242051486, now seen corresponding path program 1 times [2023-11-17 16:12:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042848857] [2023-11-17 16:12:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:03,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042848857] [2023-11-17 16:12:03,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042848857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:03,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:03,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:12:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697078825] [2023-11-17 16:12:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:03,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:12:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:12:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:12:03,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 692 [2023-11-17 16:12:03,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 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 16:12:03,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:03,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 692 [2023-11-17 16:12:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:04,555 INFO L124 PetriNetUnfolderBase]: 6452/8113 cut-off events. [2023-11-17 16:12:04,555 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-11-17 16:12:04,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16684 conditions, 8113 events. 6452/8113 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 34033 event pairs, 1323 based on Foata normal form. 1/5569 useless extension candidates. Maximal degree in co-relation 14779. Up to 7798 conditions per place. [2023-11-17 16:12:04,609 INFO L140 encePairwiseOnDemand]: 686/692 looper letters, 58 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2023-11-17 16:12:04,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 309 flow [2023-11-17 16:12:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:12:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:12:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-11-17 16:12:04,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47784200385356457 [2023-11-17 16:12:04,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-11-17 16:12:04,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-11-17 16:12:04,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:04,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-11-17 16:12:04,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:04,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:04,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:04,655 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 114 flow. Second operand 3 states and 992 transitions. [2023-11-17 16:12:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 309 flow [2023-11-17 16:12:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 16:12:04,666 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 131 flow [2023-11-17 16:12:04,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-11-17 16:12:04,671 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-17 16:12:04,672 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 131 flow [2023-11-17 16:12:04,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 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 16:12:04,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:04,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:04,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:12:04,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:04,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2067567325, now seen corresponding path program 1 times [2023-11-17 16:12:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876287463] [2023-11-17 16:12:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876287463] [2023-11-17 16:12:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876287463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:04,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:04,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:12:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44424360] [2023-11-17 16:12:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:04,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:12:04,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:12:04,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:12:04,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:04,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:04,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:04,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:04,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:06,188 INFO L124 PetriNetUnfolderBase]: 9196/11827 cut-off events. [2023-11-17 16:12:06,188 INFO L125 PetriNetUnfolderBase]: For 2455/2455 co-relation queries the response was YES. [2023-11-17 16:12:06,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26970 conditions, 11827 events. 9196/11827 cut-off events. For 2455/2455 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53708 event pairs, 2792 based on Foata normal form. 290/11241 useless extension candidates. Maximal degree in co-relation 22163. Up to 6801 conditions per place. [2023-11-17 16:12:06,256 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 72 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-17 16:12:06,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 349 flow [2023-11-17 16:12:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:12:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:12:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-11-17 16:12:06,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797687861271676 [2023-11-17 16:12:06,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-11-17 16:12:06,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-11-17 16:12:06,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:06,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-11-17 16:12:06,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:06,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:06,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:06,268 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 131 flow. Second operand 3 states and 996 transitions. [2023-11-17 16:12:06,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 349 flow [2023-11-17 16:12:06,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:12:06,271 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 134 flow [2023-11-17 16:12:06,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-17 16:12:06,272 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-17 16:12:06,272 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 134 flow [2023-11-17 16:12:06,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:06,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:06,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:06,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:12:06,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:06,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2078253054, now seen corresponding path program 1 times [2023-11-17 16:12:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861669259] [2023-11-17 16:12:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:06,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861669259] [2023-11-17 16:12:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861669259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:06,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:12:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664372495] [2023-11-17 16:12:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:12:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:12:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:12:06,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:06,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:06,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:06,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:06,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:07,599 INFO L124 PetriNetUnfolderBase]: 8052/10342 cut-off events. [2023-11-17 16:12:07,599 INFO L125 PetriNetUnfolderBase]: For 2326/2326 co-relation queries the response was YES. [2023-11-17 16:12:07,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 10342 events. 8052/10342 cut-off events. For 2326/2326 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 47341 event pairs, 1746 based on Foata normal form. 144/9721 useless extension candidates. Maximal degree in co-relation 7921. Up to 9219 conditions per place. [2023-11-17 16:12:07,669 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 66 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-17 16:12:07,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 327 flow [2023-11-17 16:12:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:12:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:12:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-17 16:12:07,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2023-11-17 16:12:07,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-17 16:12:07,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-17 16:12:07,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:07,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-17 16:12:07,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:07,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:07,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:07,681 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 134 flow. Second operand 3 states and 990 transitions. [2023-11-17 16:12:07,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 327 flow [2023-11-17 16:12:07,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:12:07,689 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 140 flow [2023-11-17 16:12:07,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-17 16:12:07,690 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-17 16:12:07,690 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 140 flow [2023-11-17 16:12:07,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:07,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:07,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:07,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:12:07,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:07,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash 170030301, now seen corresponding path program 1 times [2023-11-17 16:12:07,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:07,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878635711] [2023-11-17 16:12:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:07,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878635711] [2023-11-17 16:12:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878635711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:12:07,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071470360] [2023-11-17 16:12:07,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:07,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:12:07,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:12:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:12:07,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:07,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:07,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:07,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:07,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:08,730 INFO L124 PetriNetUnfolderBase]: 7249/9289 cut-off events. [2023-11-17 16:12:08,731 INFO L125 PetriNetUnfolderBase]: For 3533/3533 co-relation queries the response was YES. [2023-11-17 16:12:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22713 conditions, 9289 events. 7249/9289 cut-off events. For 3533/3533 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40505 event pairs, 1383 based on Foata normal form. 98/8696 useless extension candidates. Maximal degree in co-relation 17187. Up to 8603 conditions per place. [2023-11-17 16:12:08,792 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 56 selfloop transitions, 2 changer transitions 8/70 dead transitions. [2023-11-17 16:12:08,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 323 flow [2023-11-17 16:12:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:12:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:12:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-17 16:12:08,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2023-11-17 16:12:08,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-17 16:12:08,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-17 16:12:08,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:08,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-17 16:12:08,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:08,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:08,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:08,803 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 140 flow. Second operand 3 states and 990 transitions. [2023-11-17 16:12:08,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 323 flow [2023-11-17 16:12:08,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:12:08,807 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 146 flow [2023-11-17 16:12:08,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-11-17 16:12:08,808 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-17 16:12:08,808 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 146 flow [2023-11-17 16:12:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:08,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:08,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:08,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:12:08,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:08,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash -285385413, now seen corresponding path program 1 times [2023-11-17 16:12:08,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:08,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355033028] [2023-11-17 16:12:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:08,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:08,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355033028] [2023-11-17 16:12:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355033028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:08,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:08,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:12:08,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026877699] [2023-11-17 16:12:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:12:08,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:12:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:12:08,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:08,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:08,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:08,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:08,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:09,438 INFO L124 PetriNetUnfolderBase]: 3605/4664 cut-off events. [2023-11-17 16:12:09,438 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2023-11-17 16:12:09,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 4664 events. 3605/4664 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18794 event pairs, 1445 based on Foata normal form. 29/4390 useless extension candidates. Maximal degree in co-relation 3827. Up to 4435 conditions per place. [2023-11-17 16:12:09,464 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 47 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2023-11-17 16:12:09,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 292 flow [2023-11-17 16:12:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:12:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:12:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2023-11-17 16:12:09,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47157996146435455 [2023-11-17 16:12:09,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2023-11-17 16:12:09,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2023-11-17 16:12:09,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:09,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2023-11-17 16:12:09,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:09,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:09,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:09,475 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 146 flow. Second operand 3 states and 979 transitions. [2023-11-17 16:12:09,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 292 flow [2023-11-17 16:12:09,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:12:09,480 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 156 flow [2023-11-17 16:12:09,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-17 16:12:09,482 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-17 16:12:09,482 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 156 flow [2023-11-17 16:12:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:09,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:09,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:09,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:12:09,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:09,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash -332745574, now seen corresponding path program 1 times [2023-11-17 16:12:09,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:09,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871900538] [2023-11-17 16:12:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:12:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871900538] [2023-11-17 16:12:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871900538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:09,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:12:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340586028] [2023-11-17 16:12:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:09,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:12:09,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 692 [2023-11-17 16:12:09,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:09,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:09,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 692 [2023-11-17 16:12:09,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:10,323 INFO L124 PetriNetUnfolderBase]: 3725/4893 cut-off events. [2023-11-17 16:12:10,323 INFO L125 PetriNetUnfolderBase]: For 3058/3058 co-relation queries the response was YES. [2023-11-17 16:12:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12882 conditions, 4893 events. 3725/4893 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20782 event pairs, 2472 based on Foata normal form. 30/4912 useless extension candidates. Maximal degree in co-relation 7575. Up to 4650 conditions per place. [2023-11-17 16:12:10,348 INFO L140 encePairwiseOnDemand]: 688/692 looper letters, 45 selfloop transitions, 2 changer transitions 26/77 dead transitions. [2023-11-17 16:12:10,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 364 flow [2023-11-17 16:12:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:12:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:12:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1097 transitions. [2023-11-17 16:12:10,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963150289017341 [2023-11-17 16:12:10,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1097 transitions. [2023-11-17 16:12:10,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1097 transitions. [2023-11-17 16:12:10,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:10,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1097 transitions. [2023-11-17 16:12:10,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 274.25) internal successors, (1097), 4 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:10,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:10,361 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:10,361 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 156 flow. Second operand 4 states and 1097 transitions. [2023-11-17 16:12:10,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 364 flow [2023-11-17 16:12:10,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:12:10,365 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 168 flow [2023-11-17 16:12:10,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-17 16:12:10,368 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-11-17 16:12:10,368 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 168 flow [2023-11-17 16:12:10,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:10,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:10,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:10,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:12:10,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:10,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash -871895065, now seen corresponding path program 1 times [2023-11-17 16:12:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401944412] [2023-11-17 16:12:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:12:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401944412] [2023-11-17 16:12:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401944412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:10,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:10,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:12:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717667647] [2023-11-17 16:12:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:10,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:10,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:12:10,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 692 [2023-11-17 16:12:10,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:10,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:10,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 692 [2023-11-17 16:12:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:11,372 INFO L124 PetriNetUnfolderBase]: 4092/5410 cut-off events. [2023-11-17 16:12:11,373 INFO L125 PetriNetUnfolderBase]: For 3418/3418 co-relation queries the response was YES. [2023-11-17 16:12:11,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5410 events. 4092/5410 cut-off events. For 3418/3418 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 23318 event pairs, 2736 based on Foata normal form. 32/5432 useless extension candidates. Maximal degree in co-relation 14209. Up to 4648 conditions per place. [2023-11-17 16:12:11,410 INFO L140 encePairwiseOnDemand]: 687/692 looper letters, 45 selfloop transitions, 3 changer transitions 34/86 dead transitions. [2023-11-17 16:12:11,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 430 flow [2023-11-17 16:12:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:12:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:12:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1105 transitions. [2023-11-17 16:12:11,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39920520231213874 [2023-11-17 16:12:11,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1105 transitions. [2023-11-17 16:12:11,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1105 transitions. [2023-11-17 16:12:11,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:11,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1105 transitions. [2023-11-17 16:12:11,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:11,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:11,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:11,422 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 168 flow. Second operand 4 states and 1105 transitions. [2023-11-17 16:12:11,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 430 flow [2023-11-17 16:12:11,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:12:11,427 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 180 flow [2023-11-17 16:12:11,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-17 16:12:11,429 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-17 16:12:11,433 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 180 flow [2023-11-17 16:12:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:11,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:11,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:12:11,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:11,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1082125009, now seen corresponding path program 1 times [2023-11-17 16:12:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937691423] [2023-11-17 16:12:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:12:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937691423] [2023-11-17 16:12:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937691423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:11,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:12:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798802485] [2023-11-17 16:12:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:11,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:12:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 692 [2023-11-17 16:12:11,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:11,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:11,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 692 [2023-11-17 16:12:11,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:12,259 INFO L124 PetriNetUnfolderBase]: 3792/4999 cut-off events. [2023-11-17 16:12:12,260 INFO L125 PetriNetUnfolderBase]: For 3117/3117 co-relation queries the response was YES. [2023-11-17 16:12:12,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 4999 events. 3792/4999 cut-off events. For 3117/3117 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21452 event pairs, 2540 based on Foata normal form. 8/4998 useless extension candidates. Maximal degree in co-relation 13125. Up to 4646 conditions per place. [2023-11-17 16:12:12,280 INFO L140 encePairwiseOnDemand]: 682/692 looper letters, 43 selfloop transitions, 6 changer transitions 26/79 dead transitions. [2023-11-17 16:12:12,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 398 flow [2023-11-17 16:12:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:12:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:12:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1356 transitions. [2023-11-17 16:12:12,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3919075144508671 [2023-11-17 16:12:12,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1356 transitions. [2023-11-17 16:12:12,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1356 transitions. [2023-11-17 16:12:12,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:12,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1356 transitions. [2023-11-17 16:12:12,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:12,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 692.0) internal successors, (4152), 6 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:12,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 692.0) internal successors, (4152), 6 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:12,292 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 180 flow. Second operand 5 states and 1356 transitions. [2023-11-17 16:12:12,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 398 flow [2023-11-17 16:12:12,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 388 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 16:12:12,298 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 204 flow [2023-11-17 16:12:12,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-17 16:12:12,300 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-11-17 16:12:12,300 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 204 flow [2023-11-17 16:12:12,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.75) internal successors, (1063), 4 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:12,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:12,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:12,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:12:12,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:12,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash 49086961, now seen corresponding path program 1 times [2023-11-17 16:12:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279707816] [2023-11-17 16:12:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279707816] [2023-11-17 16:12:12,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279707816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:12,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:12:12,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:12:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421012770] [2023-11-17 16:12:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:12:12,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 692 [2023-11-17 16:12:12,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:12,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:12,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 692 [2023-11-17 16:12:12,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:13,000 INFO L124 PetriNetUnfolderBase]: 3818/5040 cut-off events. [2023-11-17 16:12:13,001 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2023-11-17 16:12:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 5040 events. 3818/5040 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21483 event pairs, 2560 based on Foata normal form. 16/5050 useless extension candidates. Maximal degree in co-relation 13225. Up to 4644 conditions per place. [2023-11-17 16:12:13,030 INFO L140 encePairwiseOnDemand]: 687/692 looper letters, 47 selfloop transitions, 3 changer transitions 25/79 dead transitions. [2023-11-17 16:12:13,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 432 flow [2023-11-17 16:12:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:12:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:12:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1096 transitions. [2023-11-17 16:12:13,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959537572254335 [2023-11-17 16:12:13,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1096 transitions. [2023-11-17 16:12:13,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1096 transitions. [2023-11-17 16:12:13,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:13,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1096 transitions. [2023-11-17 16:12:13,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:13,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:13,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:13,043 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 204 flow. Second operand 4 states and 1096 transitions. [2023-11-17 16:12:13,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 432 flow [2023-11-17 16:12:13,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 404 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 16:12:13,048 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 200 flow [2023-11-17 16:12:13,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-17 16:12:13,049 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-17 16:12:13,049 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 200 flow [2023-11-17 16:12:13,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:13,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:13,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:13,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:12:13,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:13,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1017120124, now seen corresponding path program 1 times [2023-11-17 16:12:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585451109] [2023-11-17 16:12:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585451109] [2023-11-17 16:12:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585451109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958054222] [2023-11-17 16:12:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:13,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:12:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:13,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 16:12:13,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:12:13,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:12:13,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958054222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:13,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:12:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-17 16:12:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392064838] [2023-11-17 16:12:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:13,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:13,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:12:13,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:13,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:13,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:13,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:13,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:14,849 INFO L124 PetriNetUnfolderBase]: 9145/11842 cut-off events. [2023-11-17 16:12:14,850 INFO L125 PetriNetUnfolderBase]: For 7952/7952 co-relation queries the response was YES. [2023-11-17 16:12:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31763 conditions, 11842 events. 9145/11842 cut-off events. For 7952/7952 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52251 event pairs, 2544 based on Foata normal form. 316/12154 useless extension candidates. Maximal degree in co-relation 31731. Up to 4655 conditions per place. [2023-11-17 16:12:14,907 INFO L140 encePairwiseOnDemand]: 685/692 looper letters, 89 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2023-11-17 16:12:14,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 570 flow [2023-11-17 16:12:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:12:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:12:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2023-11-17 16:12:14,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779624277456647 [2023-11-17 16:12:14,912 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2023-11-17 16:12:14,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2023-11-17 16:12:14,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:14,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2023-11-17 16:12:14,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:14,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:14,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:14,920 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 200 flow. Second operand 4 states and 1323 transitions. [2023-11-17 16:12:14,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 570 flow [2023-11-17 16:12:14,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 556 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 16:12:14,930 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 276 flow [2023-11-17 16:12:14,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-11-17 16:12:14,931 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2023-11-17 16:12:14,931 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 276 flow [2023-11-17 16:12:14,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:14,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:14,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:14,941 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 16:12:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 16:12:15,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:15,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1644448070, now seen corresponding path program 1 times [2023-11-17 16:12:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:15,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809802461] [2023-11-17 16:12:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:12:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809802461] [2023-11-17 16:12:15,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809802461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831402071] [2023-11-17 16:12:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:15,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:15,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:15,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:15,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:12:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:15,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:12:15,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:12:15,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:12:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831402071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:15,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:12:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002382071] [2023-11-17 16:12:15,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:15,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:12:15,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:12:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:12:15,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 692 [2023-11-17 16:12:15,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 260.0833333333333) internal successors, (3121), 12 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:15,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:15,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 692 [2023-11-17 16:12:15,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:17,177 INFO L124 PetriNetUnfolderBase]: 9376/12253 cut-off events. [2023-11-17 16:12:17,177 INFO L125 PetriNetUnfolderBase]: For 12165/12165 co-relation queries the response was YES. [2023-11-17 16:12:17,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37577 conditions, 12253 events. 9376/12253 cut-off events. For 12165/12165 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 54417 event pairs, 5438 based on Foata normal form. 16/12264 useless extension candidates. Maximal degree in co-relation 36536. Up to 11827 conditions per place. [2023-11-17 16:12:17,245 INFO L140 encePairwiseOnDemand]: 686/692 looper letters, 57 selfloop transitions, 3 changer transitions 45/109 dead transitions. [2023-11-17 16:12:17,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 640 flow [2023-11-17 16:12:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:12:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:12:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1617 transitions. [2023-11-17 16:12:17,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38945086705202314 [2023-11-17 16:12:17,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1617 transitions. [2023-11-17 16:12:17,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1617 transitions. [2023-11-17 16:12:17,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:17,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1617 transitions. [2023-11-17 16:12:17,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:17,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 692.0) internal successors, (4844), 7 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:17,258 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 692.0) internal successors, (4844), 7 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:17,258 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 276 flow. Second operand 6 states and 1617 transitions. [2023-11-17 16:12:17,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 640 flow [2023-11-17 16:12:17,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 632 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 16:12:17,286 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 292 flow [2023-11-17 16:12:17,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-11-17 16:12:17,287 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-11-17 16:12:17,287 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 292 flow [2023-11-17 16:12:17,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 260.0833333333333) internal successors, (3121), 12 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:17,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:17,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:17,300 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 16:12:17,494 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,SelfDestructingSolverStorable10 [2023-11-17 16:12:17,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:17,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1588990877, now seen corresponding path program 2 times [2023-11-17 16:12:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969915833] [2023-11-17 16:12:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:17,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969915833] [2023-11-17 16:12:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969915833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124865888] [2023-11-17 16:12:17,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:12:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:17,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:17,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:12:18,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:12:18,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:12:18,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 16:12:18,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:12:18,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:12:18,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124865888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:12:18,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:12:18,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-17 16:12:18,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286019405] [2023-11-17 16:12:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:12:18,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:12:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:12:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:12:18,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-17 16:12:18,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:18,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:18,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-17 16:12:18,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:20,281 INFO L124 PetriNetUnfolderBase]: 16217/21345 cut-off events. [2023-11-17 16:12:20,281 INFO L125 PetriNetUnfolderBase]: For 23766/23766 co-relation queries the response was YES. [2023-11-17 16:12:20,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66064 conditions, 21345 events. 16217/21345 cut-off events. For 23766/23766 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 98367 event pairs, 4347 based on Foata normal form. 448/21789 useless extension candidates. Maximal degree in co-relation 66027. Up to 8305 conditions per place. [2023-11-17 16:12:20,374 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 124 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-11-17 16:12:20,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 858 flow [2023-11-17 16:12:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:12:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:12:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2023-11-17 16:12:20,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779624277456647 [2023-11-17 16:12:20,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2023-11-17 16:12:20,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2023-11-17 16:12:20,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:20,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2023-11-17 16:12:20,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:20,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:20,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:20,384 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 292 flow. Second operand 4 states and 1323 transitions. [2023-11-17 16:12:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 858 flow [2023-11-17 16:12:20,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 133 transitions, 836 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 16:12:20,402 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 316 flow [2023-11-17 16:12:20,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-17 16:12:20,402 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-11-17 16:12:20,403 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 316 flow [2023-11-17 16:12:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.25) internal successors, (1273), 4 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:20,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:20,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:20,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:20,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:20,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash -603136120, now seen corresponding path program 1 times [2023-11-17 16:12:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732276357] [2023-11-17 16:12:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732276357] [2023-11-17 16:12:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732276357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805796946] [2023-11-17 16:12:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:20,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:20,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:20,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:12:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:21,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:12:21,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:21,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:12:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805796946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:21,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 16:12:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818725955] [2023-11-17 16:12:21,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:12:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:12:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:12:21,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 692 [2023-11-17 16:12:21,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 316 flow. Second operand has 18 states, 18 states have (on average 259.0) internal successors, (4662), 18 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:21,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:21,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 692 [2023-11-17 16:12:21,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:23,605 INFO L124 PetriNetUnfolderBase]: 16552/21928 cut-off events. [2023-11-17 16:12:23,605 INFO L125 PetriNetUnfolderBase]: For 31639/31639 co-relation queries the response was YES. [2023-11-17 16:12:23,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70751 conditions, 21928 events. 16552/21928 cut-off events. For 31639/31639 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 104885 event pairs, 11186 based on Foata normal form. 32/21955 useless extension candidates. Maximal degree in co-relation 69138. Up to 21329 conditions per place. [2023-11-17 16:12:23,769 INFO L140 encePairwiseOnDemand]: 686/692 looper letters, 60 selfloop transitions, 4 changer transitions 54/122 dead transitions. [2023-11-17 16:12:23,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 760 flow [2023-11-17 16:12:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:12:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:12:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2137 transitions. [2023-11-17 16:12:23,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860187861271676 [2023-11-17 16:12:23,775 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2137 transitions. [2023-11-17 16:12:23,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2137 transitions. [2023-11-17 16:12:23,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:23,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2137 transitions. [2023-11-17 16:12:23,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 267.125) internal successors, (2137), 8 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:23,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 692.0) internal successors, (6228), 9 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:23,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 692.0) internal successors, (6228), 9 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:23,786 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 316 flow. Second operand 8 states and 2137 transitions. [2023-11-17 16:12:23,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 760 flow [2023-11-17 16:12:23,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 752 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 16:12:23,803 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 346 flow [2023-11-17 16:12:23,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-11-17 16:12:23,804 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-11-17 16:12:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 346 flow [2023-11-17 16:12:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 259.0) internal successors, (4662), 18 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:23,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:23,806 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:23,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:24,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:24,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1504642107, now seen corresponding path program 2 times [2023-11-17 16:12:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158675358] [2023-11-17 16:12:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 16:12:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158675358] [2023-11-17 16:12:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158675358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918816181] [2023-11-17 16:12:24,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:12:24,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:24,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:24,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:24,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:12:24,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:12:24,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:12:24,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:12:24,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 16:12:24,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 16:12:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918816181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:24,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:24,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 16:12:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976206010] [2023-11-17 16:12:24,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:12:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:12:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:12:24,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 692 [2023-11-17 16:12:24,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 346 flow. Second operand has 12 states, 12 states have (on average 260.4166666666667) internal successors, (3125), 12 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:24,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:24,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 692 [2023-11-17 16:12:24,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:27,789 INFO L124 PetriNetUnfolderBase]: 19214/25861 cut-off events. [2023-11-17 16:12:27,789 INFO L125 PetriNetUnfolderBase]: For 45214/45214 co-relation queries the response was YES. [2023-11-17 16:12:27,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85997 conditions, 25861 events. 19214/25861 cut-off events. For 45214/45214 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 130526 event pairs, 11989 based on Foata normal form. 1272/27128 useless extension candidates. Maximal degree in co-relation 85949. Up to 21326 conditions per place. [2023-11-17 16:12:28,050 INFO L140 encePairwiseOnDemand]: 685/692 looper letters, 59 selfloop transitions, 6 changer transitions 71/140 dead transitions. [2023-11-17 16:12:28,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 957 flow [2023-11-17 16:12:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:12:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:12:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2396 transitions. [2023-11-17 16:12:28,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38471419396274886 [2023-11-17 16:12:28,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2396 transitions. [2023-11-17 16:12:28,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2396 transitions. [2023-11-17 16:12:28,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:28,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2396 transitions. [2023-11-17 16:12:28,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 266.22222222222223) internal successors, (2396), 9 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:28,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 692.0) internal successors, (6920), 10 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:28,068 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 692.0) internal successors, (6920), 10 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:28,068 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 346 flow. Second operand 9 states and 2396 transitions. [2023-11-17 16:12:28,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 957 flow [2023-11-17 16:12:28,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 140 transitions, 905 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-17 16:12:28,101 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 348 flow [2023-11-17 16:12:28,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=348, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2023-11-17 16:12:28,102 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-11-17 16:12:28,102 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 348 flow [2023-11-17 16:12:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 260.4166666666667) internal successors, (3125), 12 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:28,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:28,103 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:28,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:12:28,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:12:28,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash -504101237, now seen corresponding path program 3 times [2023-11-17 16:12:28,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:28,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826819132] [2023-11-17 16:12:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:35,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:35,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826819132] [2023-11-17 16:12:35,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826819132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:35,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822755656] [2023-11-17 16:12:35,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:12:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:35,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:35,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:12:35,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:12:35,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:12:35,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-17 16:12:35,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-17 16:12:35,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:35,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-17 16:12:35,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:35,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:35,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:35,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:35,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 5 [2023-11-17 16:12:36,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-17 16:12:36,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-17 16:12:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-17 16:12:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:36,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-17 16:12:36,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:36,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 16:12:36,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-17 16:12:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-17 16:12:36,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-17 16:12:36,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-17 16:12:36,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:12:36,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-17 16:12:36,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-17 16:12:36,689 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-17 16:12:36,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-17 16:12:36,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:36,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:36,983 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-17 16:12:36,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-17 16:12:37,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:37,219 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 16:12:37,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-17 16:12:37,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:37,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:37,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:37,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:37,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:12:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:39,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:29,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:16:29,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 343 treesize of output 259 [2023-11-17 16:16:46,271 WARN L293 SmtUtils]: Spent 12.45s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 16:16:46,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:16:46,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 11412523491008473 treesize of output 11366335400089790 Received shutdown request... [2023-11-17 16:20:48,413 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:20:48,413 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 16:20:48,784 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 16:20:48,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:20:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:20:48,985 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-11-17 16:20:48,987 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 16:20:48,987 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 16:20:48,987 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 16:20:48,987 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 16:20:48,988 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:20:48,991 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:20:48,991 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:20:48,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:20:48 BasicIcfg [2023-11-17 16:20:48,994 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:20:48,994 INFO L158 Benchmark]: Toolchain (without parser) took 539621.44ms. Allocated memory was 240.1MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 191.1MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. [2023-11-17 16:20:48,995 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory was 132.2MB in the beginning and 132.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:20:48,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.81ms. Allocated memory is still 240.1MB. Free memory was 191.1MB in the beginning and 177.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 16:20:48,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.68ms. Allocated memory is still 240.1MB. Free memory was 177.4MB in the beginning and 173.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:20:48,995 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 240.1MB. Free memory was 173.9MB in the beginning and 171.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:20:48,995 INFO L158 Benchmark]: RCFGBuilder took 1118.71ms. Allocated memory is still 240.1MB. Free memory was 171.2MB in the beginning and 160.5MB in the end (delta: 10.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-11-17 16:20:48,996 INFO L158 Benchmark]: TraceAbstraction took 538126.80ms. Allocated memory was 240.1MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 159.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. [2023-11-17 16:20:48,997 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory was 132.2MB in the beginning and 132.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.81ms. Allocated memory is still 240.1MB. Free memory was 191.1MB in the beginning and 177.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.68ms. Allocated memory is still 240.1MB. Free memory was 177.4MB in the beginning and 173.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 240.1MB. Free memory was 173.9MB in the beginning and 171.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1118.71ms. Allocated memory is still 240.1MB. Free memory was 171.2MB in the beginning and 160.5MB in the end (delta: 10.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 538126.80ms. Allocated memory was 240.1MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 159.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.8s, 321 PlacesBefore, 50 PlacesAfterwards, 333 TransitionsBefore, 45 TransitionsAfterwards, 3336 CoEnabledTransitionPairs, 8 FixpointIterations, 231 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 41 TrivialYvCompositions, 15 ConcurrentYvCompositions, 17 ChoiceCompositions, 342 TotalNumberOfCompositions, 7670 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4314, independent: 4149, independent conditional: 0, independent unconditional: 4149, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2389, independent: 2323, independent conditional: 0, independent unconditional: 2323, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2389, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 381, independent: 46, independent conditional: 0, independent unconditional: 46, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4314, independent: 1826, independent conditional: 0, independent unconditional: 1826, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 2389, unknown conditional: 0, unknown unconditional: 2389] , Statistics on independence cache: Total cache size (in pairs): 237, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 49 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-23-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-60-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 374 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 538.0s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2227 IncrementalHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 0 mSDtfsCounter, 2227 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 348 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=14, InterpolantAutomatonStates: 63, 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, 3.5s InterpolantComputationTime, 761 NumberOfCodeBlocks, 761 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 877 ConstructedInterpolants, 0 QuantifiedInterpolants, 2668 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2412 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 131/153 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