/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:41:12,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:41:12,383 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-VariableLbe.epf [2023-08-24 01:41:12,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:41:12,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:41:12,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:41:12,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:41:12,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:41:12,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:41:12,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:41:12,410 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:41:12,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:41:12,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:41:12,411 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:41:12,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:41:12,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:41:12,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:41:12,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:41:12,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:41:12,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:41:12,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:41:12,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:41:12,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:41:12,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:41:12,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:41:12,415 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:41:12,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:41:12,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:41:12,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:41:12,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:41:12,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:41:12,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:41:12,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:41:12,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:41:12,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:41:12,417 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:41:12,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:41:12,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:41:12,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:41:12,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:41:12,770 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:41:12,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-24 01:41:13,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:41:14,127 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:41:14,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-24 01:41:14,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff846ccb7/8271b1cbb04949589d073f157777d131/FLAGf5ef62449 [2023-08-24 01:41:14,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff846ccb7/8271b1cbb04949589d073f157777d131 [2023-08-24 01:41:14,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:41:14,514 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:41:14,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:41:14,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:41:14,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:41:14,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291f59f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14, skipping insertion in model container [2023-08-24 01:41:14,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,540 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:41:14,696 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-08-24 01:41:14,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:41:14,707 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:41:14,741 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-08-24 01:41:14,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:41:14,756 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:41:14,756 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:41:14,762 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:41:14,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14 WrapperNode [2023-08-24 01:41:14,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:41:14,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:41:14,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:41:14,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:41:14,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,807 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-24 01:41:14,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:41:14,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:41:14,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:41:14,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:41:14,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:41:14,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:41:14,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:41:14,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:41:14,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (1/1) ... [2023-08-24 01:41:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:41:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:14,879 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) [2023-08-24 01:41:14,906 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 [2023-08-24 01:41:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:41:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:41:14,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:41:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:41:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:41:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:41:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:41:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:41:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:41:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:41:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 01:41:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 01:41:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:41:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:41:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:41:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:41:14,926 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:41:15,041 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:41:15,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:41:15,296 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:41:15,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:41:15,326 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 01:41:15,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:41:15 BoogieIcfgContainer [2023-08-24 01:41:15,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:41:15,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:41:15,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:41:15,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:41:15,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:41:14" (1/3) ... [2023-08-24 01:41:15,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bac7d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:41:15, skipping insertion in model container [2023-08-24 01:41:15,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:41:14" (2/3) ... [2023-08-24 01:41:15,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bac7d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:41:15, skipping insertion in model container [2023-08-24 01:41:15,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:41:15" (3/3) ... [2023-08-24 01:41:15,337 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-08-24 01:41:15,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:41:15,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:41:15,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:41:15,446 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:41:15,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 278 flow [2023-08-24 01:41:15,577 INFO L124 PetriNetUnfolderBase]: 16/124 cut-off events. [2023-08-24 01:41:15,577 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:41:15,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 16/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-08-24 01:41:15,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 278 flow [2023-08-24 01:41:15,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 246 flow [2023-08-24 01:41:15,593 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:41:15,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 246 flow [2023-08-24 01:41:15,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 246 flow [2023-08-24 01:41:15,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 246 flow [2023-08-24 01:41:15,678 INFO L124 PetriNetUnfolderBase]: 16/114 cut-off events. [2023-08-24 01:41:15,679 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:41:15,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 16/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-08-24 01:41:15,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-08-24 01:41:19,515 INFO L134 LiptonReduction]: Checked pairs total: 3005 [2023-08-24 01:41:19,516 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-24 01:41:19,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:41:19,533 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=LoopsAndPotentialCycles, 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;@19e1a245, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:41:19,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:41:19,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:41:19,540 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-08-24 01:41:19,540 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:41:19,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:19,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:19,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:19,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:19,546 INFO L85 PathProgramCache]: Analyzing trace with hash -135806213, now seen corresponding path program 1 times [2023-08-24 01:41:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511640278] [2023-08-24 01:41:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511640278] [2023-08-24 01:41:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511640278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:41:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:41:19,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:41:19,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536089396] [2023-08-24 01:41:19,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:41:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:41:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:41:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:41:19,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-08-24 01:41:19,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:19,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:19,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-08-24 01:41:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:19,984 INFO L124 PetriNetUnfolderBase]: 111/168 cut-off events. [2023-08-24 01:41:19,985 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 01:41:19,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 111/168 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 17 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2023-08-24 01:41:19,988 INFO L140 encePairwiseOnDemand]: 237/240 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-24 01:41:19,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 140 flow [2023-08-24 01:41:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:41:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:41:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-24 01:41:20,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-08-24 01:41:20,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:20,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,027 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-08-24 01:41:20,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 140 flow [2023-08-24 01:41:20,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:41:20,031 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2023-08-24 01:41:20,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-08-24 01:41:20,037 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-08-24 01:41:20,037 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2023-08-24 01:41:20,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:20,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:20,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:41:20,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:20,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1305020753, now seen corresponding path program 1 times [2023-08-24 01:41:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296143292] [2023-08-24 01:41:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:20,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:41:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296143292] [2023-08-24 01:41:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296143292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:41:20,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:41:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:41:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124394400] [2023-08-24 01:41:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:41:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:41:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:41:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:41:20,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-08-24 01:41:20,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:20,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-08-24 01:41:20,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:20,233 INFO L124 PetriNetUnfolderBase]: 151/226 cut-off events. [2023-08-24 01:41:20,233 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-24 01:41:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 226 events. 151/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 549 event pairs, 11 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 188. Up to 185 conditions per place. [2023-08-24 01:41:20,235 INFO L140 encePairwiseOnDemand]: 237/240 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-24 01:41:20,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 149 flow [2023-08-24 01:41:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:41:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:41:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-24 01:41:20,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-08-24 01:41:20,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:20,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,242 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-08-24 01:41:20,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 149 flow [2023-08-24 01:41:20,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:41:20,243 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 66 flow [2023-08-24 01:41:20,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-24 01:41:20,244 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-24 01:41:20,244 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 66 flow [2023-08-24 01:41:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:20,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:20,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:41:20,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:20,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1756026437, now seen corresponding path program 1 times [2023-08-24 01:41:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674508009] [2023-08-24 01:41:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:41:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674508009] [2023-08-24 01:41:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674508009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:41:20,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:41:20,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:41:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683318971] [2023-08-24 01:41:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:41:20,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:41:20,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:41:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:41:20,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-08-24 01:41:20,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:20,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-08-24 01:41:20,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:20,412 INFO L124 PetriNetUnfolderBase]: 220/325 cut-off events. [2023-08-24 01:41:20,412 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-24 01:41:20,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 220/325 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 867 event pairs, 28 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 596. Up to 243 conditions per place. [2023-08-24 01:41:20,421 INFO L140 encePairwiseOnDemand]: 237/240 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-24 01:41:20,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 171 flow [2023-08-24 01:41:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:41:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:41:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-24 01:41:20,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-08-24 01:41:20,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:20,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-24 01:41:20,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,429 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 66 flow. Second operand 3 states and 357 transitions. [2023-08-24 01:41:20,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 171 flow [2023-08-24 01:41:20,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:41:20,431 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 76 flow [2023-08-24 01:41:20,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-08-24 01:41:20,433 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-24 01:41:20,436 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 76 flow [2023-08-24 01:41:20,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:20,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:20,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:41:20,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:20,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash -170860382, now seen corresponding path program 1 times [2023-08-24 01:41:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:20,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303745354] [2023-08-24 01:41:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:41:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303745354] [2023-08-24 01:41:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303745354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:41:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63891079] [2023-08-24 01:41:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:20,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:20,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:20,809 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) [2023-08-24 01:41:20,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 01:41:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:20,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 01:41:20,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:41:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:21,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:41:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:41:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63891079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:41:21,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:41:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 4] total 10 [2023-08-24 01:41:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307387691] [2023-08-24 01:41:21,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:41:21,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:41:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:41:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:41:21,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 240 [2023-08-24 01:41:21,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 76 flow. Second operand has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:21,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:21,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 240 [2023-08-24 01:41:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:21,902 INFO L124 PetriNetUnfolderBase]: 397/582 cut-off events. [2023-08-24 01:41:21,903 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-24 01:41:21,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 582 events. 397/582 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1756 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 489. Up to 177 conditions per place. [2023-08-24 01:41:21,907 INFO L140 encePairwiseOnDemand]: 234/240 looper letters, 116 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-08-24 01:41:21,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 145 transitions, 772 flow [2023-08-24 01:41:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:41:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:41:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1553 transitions. [2023-08-24 01:41:21,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38063725490196076 [2023-08-24 01:41:21,912 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1553 transitions. [2023-08-24 01:41:21,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1553 transitions. [2023-08-24 01:41:21,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:21,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1553 transitions. [2023-08-24 01:41:21,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.3529411764706) internal successors, (1553), 17 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:21,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:21,926 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:21,927 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 76 flow. Second operand 17 states and 1553 transitions. [2023-08-24 01:41:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 145 transitions, 772 flow [2023-08-24 01:41:21,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 145 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:41:21,932 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 319 flow [2023-08-24 01:41:21,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=319, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-08-24 01:41:21,933 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2023-08-24 01:41:21,933 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 319 flow [2023-08-24 01:41:21,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:21,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:21,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:21,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 01:41:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:22,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:22,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1244112525, now seen corresponding path program 2 times [2023-08-24 01:41:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322481917] [2023-08-24 01:41:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:41:22,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:22,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322481917] [2023-08-24 01:41:22,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322481917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:41:22,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878569048] [2023-08-24 01:41:22,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:41:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:22,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:22,348 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) [2023-08-24 01:41:22,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 01:41:22,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:41:22,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:41:22,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 01:41:22,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:41:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:41:22,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:41:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 01:41:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878569048] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:41:22,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:41:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 8 [2023-08-24 01:41:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010585487] [2023-08-24 01:41:22,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:41:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:41:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:41:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:41:22,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 240 [2023-08-24 01:41:22,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 319 flow. Second operand has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:22,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:22,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 240 [2023-08-24 01:41:22,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:23,020 INFO L124 PetriNetUnfolderBase]: 503/734 cut-off events. [2023-08-24 01:41:23,020 INFO L125 PetriNetUnfolderBase]: For 1625/1625 co-relation queries the response was YES. [2023-08-24 01:41:23,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 734 events. 503/734 cut-off events. For 1625/1625 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2366 event pairs, 9 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 2162. Up to 223 conditions per place. [2023-08-24 01:41:23,026 INFO L140 encePairwiseOnDemand]: 235/240 looper letters, 148 selfloop transitions, 30 changer transitions 0/178 dead transitions. [2023-08-24 01:41:23,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 178 transitions, 1451 flow [2023-08-24 01:41:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 01:41:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 01:41:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1048 transitions. [2023-08-24 01:41:23,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2023-08-24 01:41:23,030 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1048 transitions. [2023-08-24 01:41:23,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1048 transitions. [2023-08-24 01:41:23,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:23,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1048 transitions. [2023-08-24 01:41:23,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.8) internal successors, (1048), 10 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:23,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:23,037 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:23,037 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 319 flow. Second operand 10 states and 1048 transitions. [2023-08-24 01:41:23,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 178 transitions, 1451 flow [2023-08-24 01:41:23,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 178 transitions, 1116 flow, removed 143 selfloop flow, removed 3 redundant places. [2023-08-24 01:41:23,047 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 511 flow [2023-08-24 01:41:23,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=511, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-08-24 01:41:23,048 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-08-24 01:41:23,048 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 511 flow [2023-08-24 01:41:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:23,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:23,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:23,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 01:41:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:23,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:23,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1158182375, now seen corresponding path program 3 times [2023-08-24 01:41:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298427149] [2023-08-24 01:41:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298427149] [2023-08-24 01:41:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298427149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:41:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123310242] [2023-08-24 01:41:24,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:41:24,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:24,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:24,437 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) [2023-08-24 01:41:24,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 01:41:24,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 01:41:24,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:41:24,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:41:24,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:41:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:24,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:41:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:41:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123310242] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:41:25,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:41:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-08-24 01:41:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340220800] [2023-08-24 01:41:25,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:41:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 01:41:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 01:41:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-08-24 01:41:25,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-08-24 01:41:25,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 511 flow. Second operand has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:25,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:25,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-08-24 01:41:25,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:28,690 INFO L124 PetriNetUnfolderBase]: 2467/3512 cut-off events. [2023-08-24 01:41:28,690 INFO L125 PetriNetUnfolderBase]: For 12642/12642 co-relation queries the response was YES. [2023-08-24 01:41:28,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 3512 events. 2467/3512 cut-off events. For 12642/12642 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15114 event pairs, 18 based on Foata normal form. 32/3210 useless extension candidates. Maximal degree in co-relation 12410. Up to 801 conditions per place. [2023-08-24 01:41:28,755 INFO L140 encePairwiseOnDemand]: 232/240 looper letters, 224 selfloop transitions, 410 changer transitions 24/658 dead transitions. [2023-08-24 01:41:28,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 658 transitions, 5364 flow [2023-08-24 01:41:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 01:41:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 01:41:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2933 transitions. [2023-08-24 01:41:28,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33946759259259257 [2023-08-24 01:41:28,765 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2933 transitions. [2023-08-24 01:41:28,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2933 transitions. [2023-08-24 01:41:28,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:28,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2933 transitions. [2023-08-24 01:41:28,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 81.47222222222223) internal successors, (2933), 36 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:28,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:28,783 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:28,783 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 511 flow. Second operand 36 states and 2933 transitions. [2023-08-24 01:41:28,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 658 transitions, 5364 flow [2023-08-24 01:41:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 658 transitions, 4976 flow, removed 183 selfloop flow, removed 1 redundant places. [2023-08-24 01:41:28,857 INFO L231 Difference]: Finished difference. Result has 107 places, 472 transitions, 4389 flow [2023-08-24 01:41:28,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4389, PETRI_PLACES=107, PETRI_TRANSITIONS=472} [2023-08-24 01:41:28,858 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 81 predicate places. [2023-08-24 01:41:28,858 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 472 transitions, 4389 flow [2023-08-24 01:41:28,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:28,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:28,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:28,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 01:41:29,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:29,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:29,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1565513747, now seen corresponding path program 4 times [2023-08-24 01:41:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:29,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204563405] [2023-08-24 01:41:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204563405] [2023-08-24 01:41:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204563405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:41:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843541817] [2023-08-24 01:41:30,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:41:30,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:30,201 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) [2023-08-24 01:41:30,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 01:41:30,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:41:30,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:41:30,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:41:30,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:41:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:30,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:41:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:41:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843541817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:41:31,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:41:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 22 [2023-08-24 01:41:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738429328] [2023-08-24 01:41:31,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:41:31,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 01:41:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 01:41:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-08-24 01:41:31,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-08-24 01:41:31,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 472 transitions, 4389 flow. Second operand has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:31,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:31,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-08-24 01:41:31,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:35,326 INFO L124 PetriNetUnfolderBase]: 6206/8902 cut-off events. [2023-08-24 01:41:35,326 INFO L125 PetriNetUnfolderBase]: For 40470/40470 co-relation queries the response was YES. [2023-08-24 01:41:35,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42649 conditions, 8902 events. 6206/8902 cut-off events. For 40470/40470 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 46320 event pairs, 26 based on Foata normal form. 54/8540 useless extension candidates. Maximal degree in co-relation 41148. Up to 2127 conditions per place. [2023-08-24 01:41:35,423 INFO L140 encePairwiseOnDemand]: 232/240 looper letters, 500 selfloop transitions, 1094 changer transitions 63/1657 dead transitions. [2023-08-24 01:41:35,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1657 transitions, 17162 flow [2023-08-24 01:41:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-24 01:41:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-24 01:41:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3834 transitions. [2023-08-24 01:41:35,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398936170212766 [2023-08-24 01:41:35,435 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3834 transitions. [2023-08-24 01:41:35,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3834 transitions. [2023-08-24 01:41:35,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:35,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3834 transitions. [2023-08-24 01:41:35,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 81.57446808510639) internal successors, (3834), 47 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:35,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:35,461 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:35,461 INFO L175 Difference]: Start difference. First operand has 107 places, 472 transitions, 4389 flow. Second operand 47 states and 3834 transitions. [2023-08-24 01:41:35,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1657 transitions, 17162 flow [2023-08-24 01:41:36,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1657 transitions, 15778 flow, removed 690 selfloop flow, removed 1 redundant places. [2023-08-24 01:41:36,188 INFO L231 Difference]: Finished difference. Result has 172 places, 1354 transitions, 15630 flow [2023-08-24 01:41:36,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15630, PETRI_PLACES=172, PETRI_TRANSITIONS=1354} [2023-08-24 01:41:36,190 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 146 predicate places. [2023-08-24 01:41:36,190 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 1354 transitions, 15630 flow [2023-08-24 01:41:36,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:36,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:36,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:36,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 01:41:36,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:36,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:36,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1531481615, now seen corresponding path program 5 times [2023-08-24 01:41:36,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59642053] [2023-08-24 01:41:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:41:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:37,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:41:37,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59642053] [2023-08-24 01:41:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59642053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:41:37,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44469575] [2023-08-24 01:41:37,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:41:37,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:37,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:41:37,669 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) [2023-08-24 01:41:37,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 01:41:37,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 01:41:37,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:41:37,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:41:37,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:41:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:41:38,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:41:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:41:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44469575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:41:38,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:41:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 24 [2023-08-24 01:41:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610218059] [2023-08-24 01:41:38,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:41:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 01:41:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:41:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 01:41:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:41:38,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 240 [2023-08-24 01:41:38,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1354 transitions, 15630 flow. Second operand has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:38,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:41:38,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 240 [2023-08-24 01:41:38,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:41:50,185 INFO L124 PetriNetUnfolderBase]: 17734/24832 cut-off events. [2023-08-24 01:41:50,185 INFO L125 PetriNetUnfolderBase]: For 146156/146156 co-relation queries the response was YES. [2023-08-24 01:41:50,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148649 conditions, 24832 events. 17734/24832 cut-off events. For 146156/146156 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 143648 event pairs, 28 based on Foata normal form. 57/24713 useless extension candidates. Maximal degree in co-relation 145971. Up to 7423 conditions per place. [2023-08-24 01:41:50,457 INFO L140 encePairwiseOnDemand]: 232/240 looper letters, 1184 selfloop transitions, 3774 changer transitions 43/5001 dead transitions. [2023-08-24 01:41:50,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 5001 transitions, 66210 flow [2023-08-24 01:41:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-08-24 01:41:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-08-24 01:41:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 6756 transitions. [2023-08-24 01:41:50,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3162921348314607 [2023-08-24 01:41:50,469 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 6756 transitions. [2023-08-24 01:41:50,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 6756 transitions. [2023-08-24 01:41:50,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:41:50,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 6756 transitions. [2023-08-24 01:41:50,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 75.91011235955057) internal successors, (6756), 89 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:50,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:50,523 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:50,523 INFO L175 Difference]: Start difference. First operand has 172 places, 1354 transitions, 15630 flow. Second operand 89 states and 6756 transitions. [2023-08-24 01:41:50,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 5001 transitions, 66210 flow [2023-08-24 01:41:59,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 5001 transitions, 63967 flow, removed 1112 selfloop flow, removed 2 redundant places. [2023-08-24 01:41:59,513 INFO L231 Difference]: Finished difference. Result has 293 places, 4504 transitions, 66708 flow [2023-08-24 01:41:59,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=15061, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=66708, PETRI_PLACES=293, PETRI_TRANSITIONS=4504} [2023-08-24 01:41:59,514 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 267 predicate places. [2023-08-24 01:41:59,515 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 4504 transitions, 66708 flow [2023-08-24 01:41:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:41:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:41:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:41:59,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 01:41:59,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:59,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:41:59,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:41:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1711291265, now seen corresponding path program 6 times [2023-08-24 01:41:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:41:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873642375] [2023-08-24 01:41:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:41:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:41:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:42:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:42:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:42:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873642375] [2023-08-24 01:42:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873642375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:42:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550596752] [2023-08-24 01:42:00,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:42:00,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:42:00,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:42:00,985 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) [2023-08-24 01:42:00,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 01:42:01,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 01:42:01,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:42:01,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:42:01,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:42:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:42:01,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:42:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:42:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550596752] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:42:01,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:42:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-08-24 01:42:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256524283] [2023-08-24 01:42:01,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:42:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 01:42:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:42:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 01:42:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-08-24 01:42:01,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-08-24 01:42:01,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 4504 transitions, 66708 flow. Second operand has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:42:01,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:42:01,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-08-24 01:42:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:42:30,683 INFO L124 PetriNetUnfolderBase]: 30522/43870 cut-off events. [2023-08-24 01:42:30,684 INFO L125 PetriNetUnfolderBase]: For 400834/400834 co-relation queries the response was YES. [2023-08-24 01:42:31,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313607 conditions, 43870 events. 30522/43870 cut-off events. For 400834/400834 co-relation queries the response was YES. Maximal size of possible extension queue 2154. Compared 290556 event pairs, 82 based on Foata normal form. 68/43938 useless extension candidates. Maximal degree in co-relation 312221. Up to 13621 conditions per place. [2023-08-24 01:42:31,897 INFO L140 encePairwiseOnDemand]: 232/240 looper letters, 2759 selfloop transitions, 6119 changer transitions 90/8968 dead transitions. [2023-08-24 01:42:31,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 8968 transitions, 147419 flow [2023-08-24 01:42:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-08-24 01:42:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2023-08-24 01:42:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 6706 transitions. [2023-08-24 01:42:31,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366465863453815 [2023-08-24 01:42:31,910 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 6706 transitions. [2023-08-24 01:42:31,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 6706 transitions. [2023-08-24 01:42:31,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:42:31,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 6706 transitions. [2023-08-24 01:42:31,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 80.79518072289157) internal successors, (6706), 83 states have internal predecessors, (6706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:42:31,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:42:31,947 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:42:31,948 INFO L175 Difference]: Start difference. First operand has 293 places, 4504 transitions, 66708 flow. Second operand 83 states and 6706 transitions. [2023-08-24 01:42:31,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 8968 transitions, 147419 flow [2023-08-24 01:43:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 8968 transitions, 140951 flow, removed 3062 selfloop flow, removed 13 redundant places. [2023-08-24 01:43:34,148 INFO L231 Difference]: Finished difference. Result has 399 places, 7918 transitions, 138546 flow [2023-08-24 01:43:34,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=63804, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3098, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=138546, PETRI_PLACES=399, PETRI_TRANSITIONS=7918} [2023-08-24 01:43:34,152 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 373 predicate places. [2023-08-24 01:43:34,152 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 7918 transitions, 138546 flow [2023-08-24 01:43:34,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:43:34,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:43:34,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:43:34,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 01:43:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:43:34,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:43:34,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:43:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1401432863, now seen corresponding path program 7 times [2023-08-24 01:43:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:43:34,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292450239] [2023-08-24 01:43:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:43:34,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:43:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:43:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:43:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:43:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292450239] [2023-08-24 01:43:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292450239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:43:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140780736] [2023-08-24 01:43:35,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:43:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:43:35,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:43:35,181 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:43:35,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 01:43:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:43:35,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:43:35,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:43:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:43:35,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:43:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:43:36,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140780736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:43:36,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:43:36,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-08-24 01:43:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071335398] [2023-08-24 01:43:36,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:43:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 01:43:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:43:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 01:43:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-08-24 01:43:36,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-08-24 01:43:36,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 7918 transitions, 138546 flow. Second operand has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:43:36,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:43:36,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-08-24 01:43:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:45:16,219 INFO L124 PetriNetUnfolderBase]: 55768/80973 cut-off events. [2023-08-24 01:45:16,219 INFO L125 PetriNetUnfolderBase]: For 912151/912151 co-relation queries the response was YES. [2023-08-24 01:45:18,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660732 conditions, 80973 events. 55768/80973 cut-off events. For 912151/912151 co-relation queries the response was YES. Maximal size of possible extension queue 3859. Compared 591688 event pairs, 148 based on Foata normal form. 188/81161 useless extension candidates. Maximal degree in co-relation 658230. Up to 23873 conditions per place. [2023-08-24 01:45:19,031 INFO L140 encePairwiseOnDemand]: 232/240 looper letters, 4311 selfloop transitions, 11241 changer transitions 238/15790 dead transitions. [2023-08-24 01:45:19,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 15790 transitions, 304628 flow [2023-08-24 01:45:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-08-24 01:45:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-08-24 01:45:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 6895 transitions. [2023-08-24 01:45:19,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3340600775193798 [2023-08-24 01:45:19,041 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 6895 transitions. [2023-08-24 01:45:19,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 6895 transitions. [2023-08-24 01:45:19,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:45:19,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 6895 transitions. [2023-08-24 01:45:19,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 80.17441860465117) internal successors, (6895), 86 states have internal predecessors, (6895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:45:19,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:45:19,069 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:45:19,070 INFO L175 Difference]: Start difference. First operand has 399 places, 7918 transitions, 138546 flow. Second operand 86 states and 6895 transitions. [2023-08-24 01:45:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 15790 transitions, 304628 flow [2023-08-24 01:52:23,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 15790 transitions, 300255 flow, removed 2035 selfloop flow, removed 11 redundant places. [2023-08-24 01:52:23,574 INFO L231 Difference]: Finished difference. Result has 531 places, 14680 transitions, 302938 flow [2023-08-24 01:52:23,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=136732, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=302938, PETRI_PLACES=531, PETRI_TRANSITIONS=14680} [2023-08-24 01:52:23,582 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 505 predicate places. [2023-08-24 01:52:23,582 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 14680 transitions, 302938 flow [2023-08-24 01:52:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:52:23,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:52:23,583 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:52:23,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 01:52:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:52:23,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:52:23,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:52:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1908179027, now seen corresponding path program 8 times [2023-08-24 01:52:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:52:23,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711557185] [2023-08-24 01:52:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:52:23,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:52:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:52:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:52:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:52:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711557185] [2023-08-24 01:52:24,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711557185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:52:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428122078] [2023-08-24 01:52:24,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:52:24,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:52:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:52:24,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:52:24,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 01:52:24,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:52:24,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:52:24,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 01:52:24,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:52:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:52:25,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:52:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:52:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428122078] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:52:25,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:52:25,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-08-24 01:52:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389712472] [2023-08-24 01:52:25,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:52:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 01:52:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:52:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 01:52:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-08-24 01:52:25,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-08-24 01:52:25,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 14680 transitions, 302938 flow. Second operand has 23 states, 23 states have (on average 74.69565217391305) internal successors, (1718), 23 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:52:25,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:52:25,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-08-24 01:52:25,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 01:55:09,283 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 [2023-08-24 01:55:09,283 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:55:10,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 01:55:10,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 01:55:11,744 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:55:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 01:55:11,745 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 01:55:11,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:55:11,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:55:11,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:55:11,746 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2023-08-24 01:55:11,748 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:55:11,748 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:55:11,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:55:11 BasicIcfg [2023-08-24 01:55:11,751 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:55:11,751 INFO L158 Benchmark]: Toolchain (without parser) took 837237.26ms. Allocated memory was 421.5MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 395.6MB in the beginning and 4.7GB in the end (delta: -4.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-08-24 01:55:11,751 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 421.5MB. Free memory is still 398.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:55:11,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.36ms. Allocated memory is still 421.5MB. Free memory was 395.3MB in the beginning and 384.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:55:11,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.56ms. Allocated memory is still 421.5MB. Free memory was 384.0MB in the beginning and 382.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:55:11,752 INFO L158 Benchmark]: Boogie Preprocessor took 35.32ms. Allocated memory is still 421.5MB. Free memory was 382.3MB in the beginning and 381.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:55:11,752 INFO L158 Benchmark]: RCFGBuilder took 483.57ms. Allocated memory is still 421.5MB. Free memory was 380.8MB in the beginning and 365.2MB in the end (delta: 15.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 01:55:11,752 INFO L158 Benchmark]: TraceAbstraction took 836421.17ms. Allocated memory was 421.5MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 364.5MB in the beginning and 4.7GB in the end (delta: -4.4GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-08-24 01:55:11,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 421.5MB. Free memory is still 398.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 249.36ms. Allocated memory is still 421.5MB. Free memory was 395.3MB in the beginning and 384.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.56ms. Allocated memory is still 421.5MB. Free memory was 384.0MB in the beginning and 382.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 35.32ms. Allocated memory is still 421.5MB. Free memory was 382.3MB in the beginning and 381.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 483.57ms. Allocated memory is still 421.5MB. Free memory was 380.8MB in the beginning and 365.2MB in the end (delta: 15.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 836421.17ms. Allocated memory was 421.5MB in the beginning and 6.8GB in the end (delta: 6.4GB). Free memory was 364.5MB in the beginning and 4.7GB in the end (delta: -4.4GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 108 PlacesBefore, 26 PlacesAfterwards, 114 TransitionsBefore, 19 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 113 TotalNumberOfCompositions, 3005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2864, independent: 2855, independent conditional: 0, independent unconditional: 2855, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1659, independent: 1653, independent conditional: 0, independent unconditional: 1653, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2864, independent: 1202, independent conditional: 0, independent unconditional: 1202, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1659, unknown conditional: 0, unknown unconditional: 1659] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 157 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 836.3s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 814.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2979 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2979 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 889 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8243 IncrementalHoareTripleChecker+Invalid, 9132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 889 mSolverCounterUnsat, 0 mSDtfsCounter, 8243 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 227 SyntacticMatches, 19 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16927 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302938occurred in iteration=10, InterpolantAutomatonStates: 377, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 9060 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1316 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 34/195 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