/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/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 03:19:49,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 03:19:49,647 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 03:19:49,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 03:19:49,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 03:19:49,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 03:19:49,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 03:19:49,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 03:19:49,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 03:19:49,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 03:19:49,688 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 03:19:49,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 03:19:49,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 03:19:49,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 03:19:49,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 03:19:49,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 03:19:49,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 03:19:49,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 03:19:49,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 03:19:49,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 03:19:49,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 03:19:49,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 03:19:49,693 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 03:19:49,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 03:19:49,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 03:19:49,694 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 03:19:49,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 03:19:49,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:19:49,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 03:19:49,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 03:19:49,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 03:19:49,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 03:19:49,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 03:19:49,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 03:19:49,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 03:19:49,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 03:19:49,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 03:19:50,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 03:19:50,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 03:19:50,019 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 03:19:50,021 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 03:19:50,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-24 03:19:51,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 03:19:51,427 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 03:19:51,428 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-24 03:19:51,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3116c42fc/21f430c873c44972bd0a450b4133fb0c/FLAG28f36d18e [2023-08-24 03:19:51,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3116c42fc/21f430c873c44972bd0a450b4133fb0c [2023-08-24 03:19:51,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 03:19:51,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 03:19:51,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 03:19:51,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 03:19:51,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 03:19:51,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f4d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51, skipping insertion in model container [2023-08-24 03:19:51,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,471 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 03:19:51,610 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2023-08-24 03:19:51,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:19:51,619 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 03:19:51,645 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2023-08-24 03:19:51,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:19:51,660 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:19:51,660 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 03:19:51,666 INFO L206 MainTranslator]: Completed translation [2023-08-24 03:19:51,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51 WrapperNode [2023-08-24 03:19:51,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 03:19:51,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 03:19:51,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 03:19:51,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 03:19:51,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,701 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-08-24 03:19:51,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 03:19:51,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 03:19:51,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 03:19:51,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 03:19:51,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 03:19:51,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 03:19:51,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 03:19:51,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 03:19:51,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (1/1) ... [2023-08-24 03:19:51,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:19:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:51,769 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 03:19:51,797 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 03:19:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 03:19:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 03:19:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 03:19:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 03:19:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 03:19:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 03:19:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 03:19:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 03:19:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 03:19:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 03:19:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 03:19:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 03:19:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 03:19:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 03:19:51,810 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 03:19:51,912 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 03:19:51,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 03:19:52,100 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 03:19:52,134 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 03:19:52,135 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 03:19:52,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:19:52 BoogieIcfgContainer [2023-08-24 03:19:52,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 03:19:52,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 03:19:52,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 03:19:52,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 03:19:52,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:19:51" (1/3) ... [2023-08-24 03:19:52,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17829ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:19:52, skipping insertion in model container [2023-08-24 03:19:52,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:19:51" (2/3) ... [2023-08-24 03:19:52,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17829ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:19:52, skipping insertion in model container [2023-08-24 03:19:52,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:19:52" (3/3) ... [2023-08-24 03:19:52,142 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2023-08-24 03:19:52,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 03:19:52,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 03:19:52,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 03:19:52,200 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 03:19:52,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 170 flow [2023-08-24 03:19:52,267 INFO L124 PetriNetUnfolderBase]: 6/75 cut-off events. [2023-08-24 03:19:52,267 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 03:19:52,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 6/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-24 03:19:52,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 170 flow [2023-08-24 03:19:52,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 146 flow [2023-08-24 03:19:52,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 03:19:52,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 146 flow [2023-08-24 03:19:52,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 146 flow [2023-08-24 03:19:52,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 146 flow [2023-08-24 03:19:52,320 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2023-08-24 03:19:52,320 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 03:19:52,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 67 events. 6/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-08-24 03:19:52,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 436 [2023-08-24 03:19:54,330 INFO L134 LiptonReduction]: Checked pairs total: 452 [2023-08-24 03:19:54,330 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-24 03:19:54,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 03:19:54,359 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;@ce3a277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 03:19:54,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 03:19:54,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 03:19:54,379 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-24 03:19:54,379 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 03:19:54,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:54,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:54,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:54,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash 86937769, now seen corresponding path program 1 times [2023-08-24 03:19:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416903196] [2023-08-24 03:19:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:54,787 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 03:19:54,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416903196] [2023-08-24 03:19:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416903196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:19:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:19:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 03:19:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457012670] [2023-08-24 03:19:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:19:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 03:19:54,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 03:19:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 03:19:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-08-24 03:19:54,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 03:19:54,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:54,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-08-24 03:19:54,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:54,891 INFO L124 PetriNetUnfolderBase]: 59/100 cut-off events. [2023-08-24 03:19:54,891 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-24 03:19:54,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 100 events. 59/100 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 23 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 165. Up to 78 conditions per place. [2023-08-24 03:19:54,894 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 17 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-24 03:19:54,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 97 flow [2023-08-24 03:19:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 03:19:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 03:19:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-08-24 03:19:54,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-24 03:19:54,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-08-24 03:19:54,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-08-24 03:19:54,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:54,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-08-24 03:19:54,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 03:19:54,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:54,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:54,917 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 4 states and 253 transitions. [2023-08-24 03:19:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 97 flow [2023-08-24 03:19:54,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 87 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 03:19:54,921 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 48 flow [2023-08-24 03:19:54,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-24 03:19:54,925 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-08-24 03:19:54,925 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 48 flow [2023-08-24 03:19:54,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 03:19:54,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:54,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 03:19:54,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:54,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1441172027, now seen corresponding path program 1 times [2023-08-24 03:19:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246279838] [2023-08-24 03:19:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246279838] [2023-08-24 03:19:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246279838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:19:55,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:19:55,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 03:19:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470514920] [2023-08-24 03:19:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:19:55,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:19:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:19:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:19:55,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 138 [2023-08-24 03:19:55,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 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 03:19:55,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:55,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 138 [2023-08-24 03:19:55,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:55,144 INFO L124 PetriNetUnfolderBase]: 86/161 cut-off events. [2023-08-24 03:19:55,145 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-24 03:19:55,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 161 events. 86/161 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 33 based on Foata normal form. 4/131 useless extension candidates. Maximal degree in co-relation 89. Up to 93 conditions per place. [2023-08-24 03:19:55,147 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 30 selfloop transitions, 3 changer transitions 6/39 dead transitions. [2023-08-24 03:19:55,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 197 flow [2023-08-24 03:19:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 03:19:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 03:19:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2023-08-24 03:19:55,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449275362318841 [2023-08-24 03:19:55,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 307 transitions. [2023-08-24 03:19:55,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 307 transitions. [2023-08-24 03:19:55,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:55,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 307 transitions. [2023-08-24 03:19:55,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 03:19:55,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 03:19:55,158 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 03:19:55,158 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 48 flow. Second operand 5 states and 307 transitions. [2023-08-24 03:19:55,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 197 flow [2023-08-24 03:19:55,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 183 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 03:19:55,160 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 64 flow [2023-08-24 03:19:55,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-24 03:19:55,166 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2023-08-24 03:19:55,166 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 64 flow [2023-08-24 03:19:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 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 03:19:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:55,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 03:19:55,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:55,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1846837317, now seen corresponding path program 2 times [2023-08-24 03:19:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90780040] [2023-08-24 03:19:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90780040] [2023-08-24 03:19:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90780040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643187872] [2023-08-24 03:19:55,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:19:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:55,304 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 03:19:55,325 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 03:19:55,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 03:19:55,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:19:55,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 03:19:55,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:55,465 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 03:19:55,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 03:19:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643187872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:19:55,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 03:19:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-24 03:19:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400104062] [2023-08-24 03:19:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:19:55,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 03:19:55,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 03:19:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 03:19:55,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 138 [2023-08-24 03:19:55,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 03:19:55,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:55,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 138 [2023-08-24 03:19:55,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:55,524 INFO L124 PetriNetUnfolderBase]: 51/94 cut-off events. [2023-08-24 03:19:55,524 INFO L125 PetriNetUnfolderBase]: For 66/73 co-relation queries the response was YES. [2023-08-24 03:19:55,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 94 events. 51/94 cut-off events. For 66/73 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 216 event pairs, 16 based on Foata normal form. 15/89 useless extension candidates. Maximal degree in co-relation 170. Up to 73 conditions per place. [2023-08-24 03:19:55,530 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-24 03:19:55,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 121 flow [2023-08-24 03:19:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 03:19:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 03:19:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-08-24 03:19:55,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365942028985507 [2023-08-24 03:19:55,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-08-24 03:19:55,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-08-24 03:19:55,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:55,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-08-24 03:19:55,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 03:19:55,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:55,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:55,554 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 64 flow. Second operand 4 states and 241 transitions. [2023-08-24 03:19:55,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 121 flow [2023-08-24 03:19:55,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 111 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 03:19:55,557 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 56 flow [2023-08-24 03:19:55,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-24 03:19:55,558 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-24 03:19:55,558 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 56 flow [2023-08-24 03:19:55,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 03:19:55,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:55,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:55,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 03:19:55,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:55,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:55,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash -200595888, now seen corresponding path program 1 times [2023-08-24 03:19:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:55,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512190165] [2023-08-24 03:19:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:55,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:19:55,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512190165] [2023-08-24 03:19:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512190165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517820209] [2023-08-24 03:19:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:55,840 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 03:19:55,859 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 03:19:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:55,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 03:19:55,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:19:55,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:19:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:19:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517820209] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:19:55,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:19:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-24 03:19:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794439217] [2023-08-24 03:19:55,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:19:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:19:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:19:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:19:55,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 138 [2023-08-24 03:19:55,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 03:19:55,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:55,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 138 [2023-08-24 03:19:55,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:56,036 INFO L124 PetriNetUnfolderBase]: 56/102 cut-off events. [2023-08-24 03:19:56,037 INFO L125 PetriNetUnfolderBase]: For 29/36 co-relation queries the response was YES. [2023-08-24 03:19:56,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 102 events. 56/102 cut-off events. For 29/36 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 9 based on Foata normal form. 7/91 useless extension candidates. Maximal degree in co-relation 94. Up to 79 conditions per place. [2023-08-24 03:19:56,038 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 25 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-24 03:19:56,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 158 flow [2023-08-24 03:19:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 03:19:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 03:19:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 311 transitions. [2023-08-24 03:19:56,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45072463768115945 [2023-08-24 03:19:56,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 311 transitions. [2023-08-24 03:19:56,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 311 transitions. [2023-08-24 03:19:56,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:56,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 311 transitions. [2023-08-24 03:19:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 03:19:56,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 03:19:56,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 03:19:56,043 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 56 flow. Second operand 5 states and 311 transitions. [2023-08-24 03:19:56,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 158 flow [2023-08-24 03:19:56,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 03:19:56,045 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 83 flow [2023-08-24 03:19:56,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-24 03:19:56,046 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2023-08-24 03:19:56,046 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 83 flow [2023-08-24 03:19:56,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 03:19:56,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:56,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:56,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 03:19:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 03:19:56,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:56,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -324422196, now seen corresponding path program 2 times [2023-08-24 03:19:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362636688] [2023-08-24 03:19:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362636688] [2023-08-24 03:19:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362636688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611486243] [2023-08-24 03:19:56,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:19:56,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:56,414 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 03:19:56,418 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 03:19:56,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:19:56,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:19:56,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:19:56,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:56,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:19:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611486243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:19:56,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:19:56,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 4 [2023-08-24 03:19:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294380178] [2023-08-24 03:19:56,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:19:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 03:19:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 03:19:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 03:19:56,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 138 [2023-08-24 03:19:56,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 03:19:56,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:56,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 138 [2023-08-24 03:19:56,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:56,767 INFO L124 PetriNetUnfolderBase]: 97/179 cut-off events. [2023-08-24 03:19:56,767 INFO L125 PetriNetUnfolderBase]: For 277/306 co-relation queries the response was YES. [2023-08-24 03:19:56,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 179 events. 97/179 cut-off events. For 277/306 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 556 event pairs, 13 based on Foata normal form. 30/184 useless extension candidates. Maximal degree in co-relation 285. Up to 77 conditions per place. [2023-08-24 03:19:56,769 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 29 selfloop transitions, 8 changer transitions 4/43 dead transitions. [2023-08-24 03:19:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 252 flow [2023-08-24 03:19:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 03:19:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 03:19:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-08-24 03:19:56,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2023-08-24 03:19:56,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-08-24 03:19:56,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-08-24 03:19:56,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:56,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-08-24 03:19:56,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 03:19:56,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:56,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 03:19:56,773 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 83 flow. Second operand 4 states and 291 transitions. [2023-08-24 03:19:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 252 flow [2023-08-24 03:19:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 43 transitions, 240 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 03:19:56,776 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 136 flow [2023-08-24 03:19:56,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-24 03:19:56,777 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 11 predicate places. [2023-08-24 03:19:56,777 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 136 flow [2023-08-24 03:19:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 03:19:56,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:56,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:56,785 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 03:19:56,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:56,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:56,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1927789895, now seen corresponding path program 3 times [2023-08-24 03:19:56,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:56,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212266374] [2023-08-24 03:19:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212266374] [2023-08-24 03:19:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212266374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052527902] [2023-08-24 03:19:57,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:19:57,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:57,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:57,089 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 03:19:57,092 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 03:19:57,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:19:57,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:19:57,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:19:57,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:57,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:19:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052527902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:19:57,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:19:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-08-24 03:19:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470989318] [2023-08-24 03:19:57,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:19:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:19:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:19:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:19:57,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:19:57,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 136 flow. Second operand has 16 states, 16 states have (on average 54.1875) internal successors, (867), 16 states have internal predecessors, (867), 0 states have call successors, (0), 0 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 03:19:57,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:57,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:19:57,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:57,671 INFO L124 PetriNetUnfolderBase]: 217/363 cut-off events. [2023-08-24 03:19:57,671 INFO L125 PetriNetUnfolderBase]: For 575/575 co-relation queries the response was YES. [2023-08-24 03:19:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 363 events. 217/363 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1191 event pairs, 25 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 767. Up to 189 conditions per place. [2023-08-24 03:19:57,675 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 46 selfloop transitions, 40 changer transitions 0/86 dead transitions. [2023-08-24 03:19:57,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 86 transitions, 628 flow [2023-08-24 03:19:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 03:19:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 03:19:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 901 transitions. [2023-08-24 03:19:57,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40806159420289856 [2023-08-24 03:19:57,679 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 901 transitions. [2023-08-24 03:19:57,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 901 transitions. [2023-08-24 03:19:57,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:57,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 901 transitions. [2023-08-24 03:19:57,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 03:19:57,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 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 03:19:57,687 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 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 03:19:57,687 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 136 flow. Second operand 16 states and 901 transitions. [2023-08-24 03:19:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 86 transitions, 628 flow [2023-08-24 03:19:57,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 624 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 03:19:57,692 INFO L231 Difference]: Finished difference. Result has 53 places, 60 transitions, 502 flow [2023-08-24 03:19:57,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=502, PETRI_PLACES=53, PETRI_TRANSITIONS=60} [2023-08-24 03:19:57,693 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 33 predicate places. [2023-08-24 03:19:57,693 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 60 transitions, 502 flow [2023-08-24 03:19:57,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.1875) internal successors, (867), 16 states have internal predecessors, (867), 0 states have call successors, (0), 0 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 03:19:57,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:57,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:57,703 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 03:19:57,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:57,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:57,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2089851327, now seen corresponding path program 4 times [2023-08-24 03:19:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:57,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484135939] [2023-08-24 03:19:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:58,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484135939] [2023-08-24 03:19:58,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484135939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:58,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252093827] [2023-08-24 03:19:58,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:19:58,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:58,018 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 03:19:58,029 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 03:19:58,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:19:58,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:19:58,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 03:19:58,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:58,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:19:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252093827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:19:58,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:19:58,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-24 03:19:58,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115236970] [2023-08-24 03:19:58,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:19:58,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 03:19:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 03:19:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-24 03:19:58,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:19:58,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 502 flow. Second operand has 14 states, 14 states have (on average 54.214285714285715) internal successors, (759), 14 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 03:19:58,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:58,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:19:58,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:58,612 INFO L124 PetriNetUnfolderBase]: 307/514 cut-off events. [2023-08-24 03:19:58,612 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2023-08-24 03:19:58,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 514 events. 307/514 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1893 event pairs, 7 based on Foata normal form. 12/526 useless extension candidates. Maximal degree in co-relation 1916. Up to 208 conditions per place. [2023-08-24 03:19:58,618 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 85 selfloop transitions, 68 changer transitions 24/177 dead transitions. [2023-08-24 03:19:58,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 177 transitions, 1605 flow [2023-08-24 03:19:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 03:19:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 03:19:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1316 transitions. [2023-08-24 03:19:58,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41461877756773785 [2023-08-24 03:19:58,624 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1316 transitions. [2023-08-24 03:19:58,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1316 transitions. [2023-08-24 03:19:58,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:58,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1316 transitions. [2023-08-24 03:19:58,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 57.21739130434783) internal successors, (1316), 23 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 03:19:58,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 138.0) internal successors, (3312), 24 states have internal predecessors, (3312), 0 states have call successors, (0), 0 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 03:19:58,635 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 138.0) internal successors, (3312), 24 states have internal predecessors, (3312), 0 states have call successors, (0), 0 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 03:19:58,635 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 502 flow. Second operand 23 states and 1316 transitions. [2023-08-24 03:19:58,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 177 transitions, 1605 flow [2023-08-24 03:19:58,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 177 transitions, 1304 flow, removed 141 selfloop flow, removed 4 redundant places. [2023-08-24 03:19:58,651 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 852 flow [2023-08-24 03:19:58,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=852, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2023-08-24 03:19:58,652 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2023-08-24 03:19:58,653 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 852 flow [2023-08-24 03:19:58,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.214285714285715) internal successors, (759), 14 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 03:19:58,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:58,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:58,663 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 03:19:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:58,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:58,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash -198914523, now seen corresponding path program 5 times [2023-08-24 03:19:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670793491] [2023-08-24 03:19:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:58,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670793491] [2023-08-24 03:19:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670793491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516659812] [2023-08-24 03:19:58,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:19:58,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:58,988 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 03:19:59,013 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 03:19:59,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:19:59,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:19:59,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:19:59,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:19:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:59,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:19:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516659812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:19:59,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:19:59,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-24 03:19:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743357673] [2023-08-24 03:19:59,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:19:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 03:19:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:19:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 03:19:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-24 03:19:59,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:19:59,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 852 flow. Second operand has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 03:19:59,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:19:59,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:19:59,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:19:59,650 INFO L124 PetriNetUnfolderBase]: 365/615 cut-off events. [2023-08-24 03:19:59,650 INFO L125 PetriNetUnfolderBase]: For 2763/2763 co-relation queries the response was YES. [2023-08-24 03:19:59,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 615 events. 365/615 cut-off events. For 2763/2763 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2424 event pairs, 7 based on Foata normal form. 30/645 useless extension candidates. Maximal degree in co-relation 2662. Up to 266 conditions per place. [2023-08-24 03:19:59,656 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 73 selfloop transitions, 105 changer transitions 1/179 dead transitions. [2023-08-24 03:19:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 179 transitions, 1833 flow [2023-08-24 03:19:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 03:19:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 03:19:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1135 transitions. [2023-08-24 03:19:59,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411231884057971 [2023-08-24 03:19:59,661 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1135 transitions. [2023-08-24 03:19:59,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1135 transitions. [2023-08-24 03:19:59,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:19:59,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1135 transitions. [2023-08-24 03:19:59,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 56.75) internal successors, (1135), 20 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 03:19:59,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 138.0) internal successors, (2898), 21 states have internal predecessors, (2898), 0 states have call successors, (0), 0 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 03:19:59,670 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 138.0) internal successors, (2898), 21 states have internal predecessors, (2898), 0 states have call successors, (0), 0 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 03:19:59,670 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 852 flow. Second operand 20 states and 1135 transitions. [2023-08-24 03:19:59,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 179 transitions, 1833 flow [2023-08-24 03:19:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 179 transitions, 1573 flow, removed 117 selfloop flow, removed 5 redundant places. [2023-08-24 03:19:59,688 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 1446 flow [2023-08-24 03:19:59,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1446, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2023-08-24 03:19:59,690 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 83 predicate places. [2023-08-24 03:19:59,690 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 1446 flow [2023-08-24 03:19:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 03:19:59,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:19:59,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:19:59,698 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 03:19:59,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:59,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:19:59,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:19:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -254558235, now seen corresponding path program 6 times [2023-08-24 03:19:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:19:59,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137568628] [2023-08-24 03:19:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:19:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:19:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:19:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:19:59,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:19:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137568628] [2023-08-24 03:19:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137568628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:19:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194644325] [2023-08-24 03:19:59,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:19:59,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:19:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:19:59,990 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 03:20:00,017 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 03:20:00,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 03:20:00,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:00,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:20:00,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:00,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194644325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:00,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 03:20:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739106019] [2023-08-24 03:20:00,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:20:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:20:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:20:00,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 1446 flow. Second operand has 16 states, 16 states have (on average 54.25) internal successors, (868), 16 states have internal predecessors, (868), 0 states have call successors, (0), 0 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 03:20:00,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:00,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:00,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:00,634 INFO L124 PetriNetUnfolderBase]: 425/711 cut-off events. [2023-08-24 03:20:00,634 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2023-08-24 03:20:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 711 events. 425/711 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2921 event pairs, 10 based on Foata normal form. 22/733 useless extension candidates. Maximal degree in co-relation 4347. Up to 307 conditions per place. [2023-08-24 03:20:00,643 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 82 selfloop transitions, 121 changer transitions 0/203 dead transitions. [2023-08-24 03:20:00,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 203 transitions, 2533 flow [2023-08-24 03:20:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 03:20:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 03:20:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1016 transitions. [2023-08-24 03:20:00,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40901771336553944 [2023-08-24 03:20:00,647 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1016 transitions. [2023-08-24 03:20:00,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1016 transitions. [2023-08-24 03:20:00,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:00,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1016 transitions. [2023-08-24 03:20:00,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 56.44444444444444) internal successors, (1016), 18 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 03:20:00,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 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 03:20:00,654 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 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 03:20:00,654 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 1446 flow. Second operand 18 states and 1016 transitions. [2023-08-24 03:20:00,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 203 transitions, 2533 flow [2023-08-24 03:20:00,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 2372 flow, removed 71 selfloop flow, removed 5 redundant places. [2023-08-24 03:20:00,710 INFO L231 Difference]: Finished difference. Result has 120 places, 172 transitions, 2083 flow [2023-08-24 03:20:00,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2083, PETRI_PLACES=120, PETRI_TRANSITIONS=172} [2023-08-24 03:20:00,711 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2023-08-24 03:20:00,711 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 172 transitions, 2083 flow [2023-08-24 03:20:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.25) internal successors, (868), 16 states have internal predecessors, (868), 0 states have call successors, (0), 0 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 03:20:00,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:00,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:00,717 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 03:20:00,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:00,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:00,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1973496587, now seen corresponding path program 7 times [2023-08-24 03:20:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101136146] [2023-08-24 03:20:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101136146] [2023-08-24 03:20:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101136146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658459217] [2023-08-24 03:20:01,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:20:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:01,045 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 03:20:01,070 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 03:20:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:01,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:20:01,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:01,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658459217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:01,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:01,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 03:20:01,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330939453] [2023-08-24 03:20:01,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:01,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:20:01,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:20:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:20:01,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:01,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 172 transitions, 2083 flow. Second operand has 16 states, 16 states have (on average 54.25) internal successors, (868), 16 states have internal predecessors, (868), 0 states have call successors, (0), 0 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 03:20:01,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:01,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:01,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:01,796 INFO L124 PetriNetUnfolderBase]: 426/738 cut-off events. [2023-08-24 03:20:01,796 INFO L125 PetriNetUnfolderBase]: For 11501/11501 co-relation queries the response was YES. [2023-08-24 03:20:01,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 738 events. 426/738 cut-off events. For 11501/11501 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3218 event pairs, 9 based on Foata normal form. 38/776 useless extension candidates. Maximal degree in co-relation 4466. Up to 262 conditions per place. [2023-08-24 03:20:01,805 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 77 selfloop transitions, 136 changer transitions 1/214 dead transitions. [2023-08-24 03:20:01,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 214 transitions, 2721 flow [2023-08-24 03:20:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 03:20:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 03:20:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1299 transitions. [2023-08-24 03:20:01,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40926275992438566 [2023-08-24 03:20:01,811 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1299 transitions. [2023-08-24 03:20:01,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1299 transitions. [2023-08-24 03:20:01,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:01,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1299 transitions. [2023-08-24 03:20:01,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 56.47826086956522) internal successors, (1299), 23 states have internal predecessors, (1299), 0 states have call successors, (0), 0 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 03:20:01,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 138.0) internal successors, (3312), 24 states have internal predecessors, (3312), 0 states have call successors, (0), 0 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 03:20:01,821 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 138.0) internal successors, (3312), 24 states have internal predecessors, (3312), 0 states have call successors, (0), 0 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 03:20:01,821 INFO L175 Difference]: Start difference. First operand has 120 places, 172 transitions, 2083 flow. Second operand 23 states and 1299 transitions. [2023-08-24 03:20:01,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 214 transitions, 2721 flow [2023-08-24 03:20:01,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 2404 flow, removed 145 selfloop flow, removed 7 redundant places. [2023-08-24 03:20:01,875 INFO L231 Difference]: Finished difference. Result has 136 places, 175 transitions, 2103 flow [2023-08-24 03:20:01,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2103, PETRI_PLACES=136, PETRI_TRANSITIONS=175} [2023-08-24 03:20:01,876 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 116 predicate places. [2023-08-24 03:20:01,876 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 175 transitions, 2103 flow [2023-08-24 03:20:01,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.25) internal successors, (868), 16 states have internal predecessors, (868), 0 states have call successors, (0), 0 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 03:20:01,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:01,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:01,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-24 03:20:02,089 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:02,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 396752969, now seen corresponding path program 8 times [2023-08-24 03:20:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250363149] [2023-08-24 03:20:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250363149] [2023-08-24 03:20:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250363149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909106088] [2023-08-24 03:20:02,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:20:02,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:02,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:02,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:02,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 03:20:02,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:20:02,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:02,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:20:02,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:02,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909106088] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:02,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-24 03:20:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155119123] [2023-08-24 03:20:02,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 03:20:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 03:20:02,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-24 03:20:02,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:02,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 175 transitions, 2103 flow. Second operand has 18 states, 18 states have (on average 54.27777777777778) internal successors, (977), 18 states have internal predecessors, (977), 0 states have call successors, (0), 0 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 03:20:02,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:02,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:02,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:03,007 INFO L124 PetriNetUnfolderBase]: 605/1055 cut-off events. [2023-08-24 03:20:03,008 INFO L125 PetriNetUnfolderBase]: For 5731/5731 co-relation queries the response was YES. [2023-08-24 03:20:03,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 1055 events. 605/1055 cut-off events. For 5731/5731 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5139 event pairs, 7 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 6206. Up to 333 conditions per place. [2023-08-24 03:20:03,019 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 127 selfloop transitions, 175 changer transitions 1/303 dead transitions. [2023-08-24 03:20:03,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 303 transitions, 3878 flow [2023-08-24 03:20:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-24 03:20:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-24 03:20:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1631 transitions. [2023-08-24 03:20:03,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40754622688655673 [2023-08-24 03:20:03,024 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1631 transitions. [2023-08-24 03:20:03,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1631 transitions. [2023-08-24 03:20:03,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:03,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1631 transitions. [2023-08-24 03:20:03,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 56.241379310344826) internal successors, (1631), 29 states have internal predecessors, (1631), 0 states have call successors, (0), 0 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 03:20:03,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 03:20:03,038 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 03:20:03,038 INFO L175 Difference]: Start difference. First operand has 136 places, 175 transitions, 2103 flow. Second operand 29 states and 1631 transitions. [2023-08-24 03:20:03,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 303 transitions, 3878 flow [2023-08-24 03:20:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 303 transitions, 3570 flow, removed 15 selfloop flow, removed 18 redundant places. [2023-08-24 03:20:03,075 INFO L231 Difference]: Finished difference. Result has 153 places, 251 transitions, 3302 flow [2023-08-24 03:20:03,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3302, PETRI_PLACES=153, PETRI_TRANSITIONS=251} [2023-08-24 03:20:03,076 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 133 predicate places. [2023-08-24 03:20:03,076 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 251 transitions, 3302 flow [2023-08-24 03:20:03,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.27777777777778) internal successors, (977), 18 states have internal predecessors, (977), 0 states have call successors, (0), 0 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 03:20:03,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:03,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:03,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:03,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:03,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1674747507, now seen corresponding path program 9 times [2023-08-24 03:20:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022424607] [2023-08-24 03:20:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022424607] [2023-08-24 03:20:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022424607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589444190] [2023-08-24 03:20:03,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:20:03,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:03,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:03,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:03,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 03:20:03,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:20:03,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:03,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:20:03,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:03,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589444190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:03,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-24 03:20:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430983691] [2023-08-24 03:20:03,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:03,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 03:20:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:03,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 03:20:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-08-24 03:20:03,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:03,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 251 transitions, 3302 flow. Second operand has 18 states, 18 states have (on average 54.05555555555556) internal successors, (973), 18 states have internal predecessors, (973), 0 states have call successors, (0), 0 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 03:20:03,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:03,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:04,297 INFO L124 PetriNetUnfolderBase]: 622/1086 cut-off events. [2023-08-24 03:20:04,297 INFO L125 PetriNetUnfolderBase]: For 8368/8368 co-relation queries the response was YES. [2023-08-24 03:20:04,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7325 conditions, 1086 events. 622/1086 cut-off events. For 8368/8368 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5295 event pairs, 15 based on Foata normal form. 56/1142 useless extension candidates. Maximal degree in co-relation 7098. Up to 791 conditions per place. [2023-08-24 03:20:04,310 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 218 selfloop transitions, 89 changer transitions 2/309 dead transitions. [2023-08-24 03:20:04,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 309 transitions, 4371 flow [2023-08-24 03:20:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 03:20:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 03:20:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1360 transitions. [2023-08-24 03:20:04,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106280193236715 [2023-08-24 03:20:04,313 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1360 transitions. [2023-08-24 03:20:04,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1360 transitions. [2023-08-24 03:20:04,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:04,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1360 transitions. [2023-08-24 03:20:04,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 56.666666666666664) internal successors, (1360), 24 states have internal predecessors, (1360), 0 states have call successors, (0), 0 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 03:20:04,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 138.0) internal successors, (3450), 25 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 03:20:04,321 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 138.0) internal successors, (3450), 25 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 03:20:04,321 INFO L175 Difference]: Start difference. First operand has 153 places, 251 transitions, 3302 flow. Second operand 24 states and 1360 transitions. [2023-08-24 03:20:04,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 309 transitions, 4371 flow [2023-08-24 03:20:04,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 309 transitions, 4134 flow, removed 77 selfloop flow, removed 17 redundant places. [2023-08-24 03:20:04,377 INFO L231 Difference]: Finished difference. Result has 165 places, 265 transitions, 3556 flow [2023-08-24 03:20:04,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3556, PETRI_PLACES=165, PETRI_TRANSITIONS=265} [2023-08-24 03:20:04,378 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 145 predicate places. [2023-08-24 03:20:04,378 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 265 transitions, 3556 flow [2023-08-24 03:20:04,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.05555555555556) internal successors, (973), 18 states have internal predecessors, (973), 0 states have call successors, (0), 0 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 03:20:04,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:04,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:04,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:04,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 03:20:04,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:04,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1742915027, now seen corresponding path program 10 times [2023-08-24 03:20:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091176091] [2023-08-24 03:20:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091176091] [2023-08-24 03:20:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091176091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679072333] [2023-08-24 03:20:04,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:20:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:04,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:04,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 03:20:04,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:20:04,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:04,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:20:04,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:04,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679072333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:04,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 8 [2023-08-24 03:20:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099245398] [2023-08-24 03:20:04,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:04,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 03:20:04,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 03:20:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-08-24 03:20:04,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 138 [2023-08-24 03:20:04,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 265 transitions, 3556 flow. Second operand has 10 states, 10 states have (on average 59.2) internal successors, (592), 10 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 03:20:04,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:04,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 138 [2023-08-24 03:20:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:05,300 INFO L124 PetriNetUnfolderBase]: 924/1606 cut-off events. [2023-08-24 03:20:05,300 INFO L125 PetriNetUnfolderBase]: For 12191/12195 co-relation queries the response was YES. [2023-08-24 03:20:05,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 1606 events. 924/1606 cut-off events. For 12191/12195 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8621 event pairs, 26 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 10640. Up to 833 conditions per place. [2023-08-24 03:20:05,318 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 270 selfloop transitions, 109 changer transitions 54/436 dead transitions. [2023-08-24 03:20:05,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 436 transitions, 6601 flow [2023-08-24 03:20:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:20:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:20:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 389 transitions. [2023-08-24 03:20:05,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46980676328502413 [2023-08-24 03:20:05,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 389 transitions. [2023-08-24 03:20:05,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 389 transitions. [2023-08-24 03:20:05,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:05,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 389 transitions. [2023-08-24 03:20:05,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 03:20:05,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 03:20:05,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 03:20:05,322 INFO L175 Difference]: Start difference. First operand has 165 places, 265 transitions, 3556 flow. Second operand 6 states and 389 transitions. [2023-08-24 03:20:05,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 436 transitions, 6601 flow [2023-08-24 03:20:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 436 transitions, 6283 flow, removed 128 selfloop flow, removed 6 redundant places. [2023-08-24 03:20:05,409 INFO L231 Difference]: Finished difference. Result has 166 places, 326 transitions, 4691 flow [2023-08-24 03:20:05,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4691, PETRI_PLACES=166, PETRI_TRANSITIONS=326} [2023-08-24 03:20:05,410 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 146 predicate places. [2023-08-24 03:20:05,410 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 326 transitions, 4691 flow [2023-08-24 03:20:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.2) internal successors, (592), 10 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 03:20:05,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:05,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:05,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:05,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 03:20:05,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:05,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1056493565, now seen corresponding path program 11 times [2023-08-24 03:20:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:05,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458118207] [2023-08-24 03:20:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:05,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458118207] [2023-08-24 03:20:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458118207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:05,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447076856] [2023-08-24 03:20:05,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:20:05,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:05,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:05,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 03:20:05,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 03:20:05,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:05,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:20:05,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:20:05,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:20:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447076856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:05,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:05,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2023-08-24 03:20:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215082095] [2023-08-24 03:20:05,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:05,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 03:20:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 03:20:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-08-24 03:20:05,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:05,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 326 transitions, 4691 flow. Second operand has 13 states, 13 states have (on average 54.61538461538461) internal successors, (710), 13 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 03:20:05,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:05,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:05,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:06,589 INFO L124 PetriNetUnfolderBase]: 900/1599 cut-off events. [2023-08-24 03:20:06,589 INFO L125 PetriNetUnfolderBase]: For 14244/14244 co-relation queries the response was YES. [2023-08-24 03:20:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11662 conditions, 1599 events. 900/1599 cut-off events. For 14244/14244 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8792 event pairs, 41 based on Foata normal form. 34/1633 useless extension candidates. Maximal degree in co-relation 11174. Up to 1238 conditions per place. [2023-08-24 03:20:06,614 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 301 selfloop transitions, 83 changer transitions 26/410 dead transitions. [2023-08-24 03:20:06,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 410 transitions, 6394 flow [2023-08-24 03:20:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 03:20:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 03:20:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1092 transitions. [2023-08-24 03:20:06,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41647597254004576 [2023-08-24 03:20:06,617 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1092 transitions. [2023-08-24 03:20:06,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1092 transitions. [2023-08-24 03:20:06,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:06,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1092 transitions. [2023-08-24 03:20:06,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 57.473684210526315) internal successors, (1092), 19 states have internal predecessors, (1092), 0 states have call successors, (0), 0 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 03:20:06,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 138.0) internal successors, (2760), 20 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 03:20:06,624 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 138.0) internal successors, (2760), 20 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 03:20:06,624 INFO L175 Difference]: Start difference. First operand has 166 places, 326 transitions, 4691 flow. Second operand 19 states and 1092 transitions. [2023-08-24 03:20:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 410 transitions, 6394 flow [2023-08-24 03:20:06,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 410 transitions, 6327 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-08-24 03:20:06,721 INFO L231 Difference]: Finished difference. Result has 190 places, 343 transitions, 5214 flow [2023-08-24 03:20:06,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5214, PETRI_PLACES=190, PETRI_TRANSITIONS=343} [2023-08-24 03:20:06,722 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 170 predicate places. [2023-08-24 03:20:06,722 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 343 transitions, 5214 flow [2023-08-24 03:20:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.61538461538461) internal successors, (710), 13 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 03:20:06,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:06,723 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:06,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-24 03:20:06,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 03:20:06,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:06,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1295051786, now seen corresponding path program 12 times [2023-08-24 03:20:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938449272] [2023-08-24 03:20:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:07,093 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 03:20:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938449272] [2023-08-24 03:20:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938449272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644879913] [2023-08-24 03:20:07,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:20:07,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:07,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:07,095 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:07,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 03:20:07,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 03:20:07,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:07,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:07,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:07,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:07,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644879913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:07,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:07,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-24 03:20:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693812945] [2023-08-24 03:20:07,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 03:20:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 03:20:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-08-24 03:20:07,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:07,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 343 transitions, 5214 flow. Second operand has 21 states, 21 states have (on average 54.19047619047619) internal successors, (1138), 21 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 03:20:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:08,595 INFO L124 PetriNetUnfolderBase]: 1163/2054 cut-off events. [2023-08-24 03:20:08,596 INFO L125 PetriNetUnfolderBase]: For 21763/21763 co-relation queries the response was YES. [2023-08-24 03:20:08,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 2054 events. 1163/2054 cut-off events. For 21763/21763 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11836 event pairs, 14 based on Foata normal form. 18/2072 useless extension candidates. Maximal degree in co-relation 14864. Up to 628 conditions per place. [2023-08-24 03:20:08,620 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 141 selfloop transitions, 395 changer transitions 48/584 dead transitions. [2023-08-24 03:20:08,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 584 transitions, 9353 flow [2023-08-24 03:20:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 03:20:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 03:20:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1927 transitions. [2023-08-24 03:20:08,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106990622335891 [2023-08-24 03:20:08,625 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1927 transitions. [2023-08-24 03:20:08,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1927 transitions. [2023-08-24 03:20:08,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:08,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1927 transitions. [2023-08-24 03:20:08,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 56.6764705882353) internal successors, (1927), 34 states have internal predecessors, (1927), 0 states have call successors, (0), 0 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 03:20:08,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 138.0) internal successors, (4830), 35 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 03:20:08,647 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 138.0) internal successors, (4830), 35 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 03:20:08,648 INFO L175 Difference]: Start difference. First operand has 190 places, 343 transitions, 5214 flow. Second operand 34 states and 1927 transitions. [2023-08-24 03:20:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 584 transitions, 9353 flow [2023-08-24 03:20:08,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 584 transitions, 9114 flow, removed 49 selfloop flow, removed 9 redundant places. [2023-08-24 03:20:08,788 INFO L231 Difference]: Finished difference. Result has 224 places, 460 transitions, 8211 flow [2023-08-24 03:20:08,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=5021, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8211, PETRI_PLACES=224, PETRI_TRANSITIONS=460} [2023-08-24 03:20:08,789 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 204 predicate places. [2023-08-24 03:20:08,789 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 460 transitions, 8211 flow [2023-08-24 03:20:08,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 54.19047619047619) internal successors, (1138), 21 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 03:20:08,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:08,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:08,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 03:20:08,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:08,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1723121364, now seen corresponding path program 13 times [2023-08-24 03:20:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176546134] [2023-08-24 03:20:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:09,129 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 03:20:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176546134] [2023-08-24 03:20:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176546134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473689860] [2023-08-24 03:20:09,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:20:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:09,131 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:09,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 03:20:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:09,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:09,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:09,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:09,460 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 03:20:09,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473689860] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:09,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:09,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-24 03:20:09,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932411434] [2023-08-24 03:20:09,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:09,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 03:20:09,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 03:20:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-08-24 03:20:09,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:09,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 460 transitions, 8211 flow. Second operand has 22 states, 22 states have (on average 54.04545454545455) internal successors, (1189), 22 states have internal predecessors, (1189), 0 states have call successors, (0), 0 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 03:20:09,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:09,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:09,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:10,608 INFO L124 PetriNetUnfolderBase]: 1294/2233 cut-off events. [2023-08-24 03:20:10,608 INFO L125 PetriNetUnfolderBase]: For 34360/34360 co-relation queries the response was YES. [2023-08-24 03:20:10,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19576 conditions, 2233 events. 1294/2233 cut-off events. For 34360/34360 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12611 event pairs, 15 based on Foata normal form. 54/2287 useless extension candidates. Maximal degree in co-relation 18879. Up to 627 conditions per place. [2023-08-24 03:20:10,636 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 153 selfloop transitions, 449 changer transitions 15/617 dead transitions. [2023-08-24 03:20:10,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 617 transitions, 11789 flow [2023-08-24 03:20:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-24 03:20:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-24 03:20:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1866 transitions. [2023-08-24 03:20:10,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40974967061923584 [2023-08-24 03:20:10,640 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1866 transitions. [2023-08-24 03:20:10,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1866 transitions. [2023-08-24 03:20:10,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:10,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1866 transitions. [2023-08-24 03:20:10,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 56.54545454545455) internal successors, (1866), 33 states have internal predecessors, (1866), 0 states have call successors, (0), 0 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 03:20:10,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 138.0) internal successors, (4692), 34 states have internal predecessors, (4692), 0 states have call successors, (0), 0 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 03:20:10,649 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 138.0) internal successors, (4692), 34 states have internal predecessors, (4692), 0 states have call successors, (0), 0 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 03:20:10,649 INFO L175 Difference]: Start difference. First operand has 224 places, 460 transitions, 8211 flow. Second operand 33 states and 1866 transitions. [2023-08-24 03:20:10,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 617 transitions, 11789 flow [2023-08-24 03:20:10,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 617 transitions, 10958 flow, removed 377 selfloop flow, removed 11 redundant places. [2023-08-24 03:20:10,891 INFO L231 Difference]: Finished difference. Result has 254 places, 536 transitions, 10318 flow [2023-08-24 03:20:10,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=10318, PETRI_PLACES=254, PETRI_TRANSITIONS=536} [2023-08-24 03:20:10,892 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2023-08-24 03:20:10,892 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 536 transitions, 10318 flow [2023-08-24 03:20:10,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.04545454545455) internal successors, (1189), 22 states have internal predecessors, (1189), 0 states have call successors, (0), 0 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 03:20:10,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:10,893 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:10,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:11,097 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:11,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1898634790, now seen corresponding path program 14 times [2023-08-24 03:20:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627502303] [2023-08-24 03:20:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:11,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627502303] [2023-08-24 03:20:11,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627502303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077637653] [2023-08-24 03:20:11,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:20:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:11,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:11,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 03:20:11,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:20:11,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:11,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:20:11,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:11,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:11,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077637653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:11,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-24 03:20:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499553797] [2023-08-24 03:20:11,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 03:20:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 03:20:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-08-24 03:20:11,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:11,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 536 transitions, 10318 flow. Second operand has 21 states, 21 states have (on average 53.95238095238095) internal successors, (1133), 21 states have internal predecessors, (1133), 0 states have call successors, (0), 0 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 03:20:11,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:11,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:11,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:12,712 INFO L124 PetriNetUnfolderBase]: 1426/2423 cut-off events. [2023-08-24 03:20:12,712 INFO L125 PetriNetUnfolderBase]: For 41123/41123 co-relation queries the response was YES. [2023-08-24 03:20:12,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 2423 events. 1426/2423 cut-off events. For 41123/41123 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13656 event pairs, 44 based on Foata normal form. 32/2455 useless extension candidates. Maximal degree in co-relation 21495. Up to 1145 conditions per place. [2023-08-24 03:20:12,737 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 187 selfloop transitions, 464 changer transitions 7/658 dead transitions. [2023-08-24 03:20:12,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 658 transitions, 13639 flow [2023-08-24 03:20:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-24 03:20:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-24 03:20:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1519 transitions. [2023-08-24 03:20:12,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076757917337627 [2023-08-24 03:20:12,740 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1519 transitions. [2023-08-24 03:20:12,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1519 transitions. [2023-08-24 03:20:12,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:12,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1519 transitions. [2023-08-24 03:20:12,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 56.25925925925926) internal successors, (1519), 27 states have internal predecessors, (1519), 0 states have call successors, (0), 0 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 03:20:12,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 138.0) internal successors, (3864), 28 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 03:20:12,746 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 138.0) internal successors, (3864), 28 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 03:20:12,746 INFO L175 Difference]: Start difference. First operand has 254 places, 536 transitions, 10318 flow. Second operand 27 states and 1519 transitions. [2023-08-24 03:20:12,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 658 transitions, 13639 flow [2023-08-24 03:20:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 658 transitions, 13262 flow, removed 123 selfloop flow, removed 14 redundant places. [2023-08-24 03:20:13,060 INFO L231 Difference]: Finished difference. Result has 271 places, 609 transitions, 12747 flow [2023-08-24 03:20:13,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=9955, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=12747, PETRI_PLACES=271, PETRI_TRANSITIONS=609} [2023-08-24 03:20:13,061 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 251 predicate places. [2023-08-24 03:20:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 609 transitions, 12747 flow [2023-08-24 03:20:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 53.95238095238095) internal successors, (1133), 21 states have internal predecessors, (1133), 0 states have call successors, (0), 0 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 03:20:13,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:13,061 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:13,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:13,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 03:20:13,267 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:13,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -808241108, now seen corresponding path program 15 times [2023-08-24 03:20:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:13,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754061396] [2023-08-24 03:20:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:13,407 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 03:20:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754061396] [2023-08-24 03:20:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754061396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085736194] [2023-08-24 03:20:13,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:20:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:13,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:13,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:13,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 03:20:13,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:20:13,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:13,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:20:13,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:13,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:13,760 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 03:20:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085736194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:13,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-24 03:20:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245065803] [2023-08-24 03:20:13,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:13,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 03:20:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 03:20:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-08-24 03:20:13,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:13,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 609 transitions, 12747 flow. Second operand has 20 states, 20 states have (on average 54.05) internal successors, (1081), 20 states have internal predecessors, (1081), 0 states have call successors, (0), 0 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 03:20:13,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:13,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:13,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:14,885 INFO L124 PetriNetUnfolderBase]: 1527/2632 cut-off events. [2023-08-24 03:20:14,885 INFO L125 PetriNetUnfolderBase]: For 51105/51105 co-relation queries the response was YES. [2023-08-24 03:20:14,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25624 conditions, 2632 events. 1527/2632 cut-off events. For 51105/51105 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 15268 event pairs, 23 based on Foata normal form. 18/2650 useless extension candidates. Maximal degree in co-relation 24759. Up to 766 conditions per place. [2023-08-24 03:20:14,914 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 329 selfloop transitions, 446 changer transitions 0/775 dead transitions. [2023-08-24 03:20:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 775 transitions, 16838 flow [2023-08-24 03:20:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-24 03:20:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-24 03:20:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2081 transitions. [2023-08-24 03:20:14,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075597336466902 [2023-08-24 03:20:14,918 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2081 transitions. [2023-08-24 03:20:14,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2081 transitions. [2023-08-24 03:20:14,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:14,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2081 transitions. [2023-08-24 03:20:14,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 56.24324324324324) internal successors, (2081), 37 states have internal predecessors, (2081), 0 states have call successors, (0), 0 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 03:20:14,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 138.0) internal successors, (5244), 38 states have internal predecessors, (5244), 0 states have call successors, (0), 0 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 03:20:14,928 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 138.0) internal successors, (5244), 38 states have internal predecessors, (5244), 0 states have call successors, (0), 0 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 03:20:14,928 INFO L175 Difference]: Start difference. First operand has 271 places, 609 transitions, 12747 flow. Second operand 37 states and 2081 transitions. [2023-08-24 03:20:14,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 775 transitions, 16838 flow [2023-08-24 03:20:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 775 transitions, 16113 flow, removed 308 selfloop flow, removed 8 redundant places. [2023-08-24 03:20:15,425 INFO L231 Difference]: Finished difference. Result has 302 places, 685 transitions, 15045 flow [2023-08-24 03:20:15,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=12230, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=15045, PETRI_PLACES=302, PETRI_TRANSITIONS=685} [2023-08-24 03:20:15,426 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 282 predicate places. [2023-08-24 03:20:15,426 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 685 transitions, 15045 flow [2023-08-24 03:20:15,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.05) internal successors, (1081), 20 states have internal predecessors, (1081), 0 states have call successors, (0), 0 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 03:20:15,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:15,426 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:15,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:15,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-24 03:20:15,627 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:15,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 110879228, now seen corresponding path program 16 times [2023-08-24 03:20:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279959772] [2023-08-24 03:20:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:15,753 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 03:20:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279959772] [2023-08-24 03:20:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279959772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481034815] [2023-08-24 03:20:15,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:20:15,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:15,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:15,755 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:15,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 03:20:15,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:20:15,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:15,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:20:15,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:16,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:16,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481034815] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:16,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:16,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-24 03:20:16,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495505609] [2023-08-24 03:20:16,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 03:20:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 03:20:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-24 03:20:16,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:16,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 685 transitions, 15045 flow. Second operand has 20 states, 20 states have (on average 53.9) internal successors, (1078), 20 states have internal predecessors, (1078), 0 states have call successors, (0), 0 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 03:20:16,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:16,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:16,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:17,228 INFO L124 PetriNetUnfolderBase]: 1597/2776 cut-off events. [2023-08-24 03:20:17,229 INFO L125 PetriNetUnfolderBase]: For 60526/60526 co-relation queries the response was YES. [2023-08-24 03:20:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27532 conditions, 2776 events. 1597/2776 cut-off events. For 60526/60526 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 16515 event pairs, 27 based on Foata normal form. 46/2822 useless extension candidates. Maximal degree in co-relation 26625. Up to 987 conditions per place. [2023-08-24 03:20:17,251 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 279 selfloop transitions, 500 changer transitions 2/781 dead transitions. [2023-08-24 03:20:17,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 781 transitions, 17825 flow [2023-08-24 03:20:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 03:20:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 03:20:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1916 transitions. [2023-08-24 03:20:17,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083546462063086 [2023-08-24 03:20:17,255 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1916 transitions. [2023-08-24 03:20:17,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1916 transitions. [2023-08-24 03:20:17,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:17,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1916 transitions. [2023-08-24 03:20:17,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 56.35294117647059) internal successors, (1916), 34 states have internal predecessors, (1916), 0 states have call successors, (0), 0 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 03:20:17,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 138.0) internal successors, (4830), 35 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 03:20:17,263 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 138.0) internal successors, (4830), 35 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 03:20:17,263 INFO L175 Difference]: Start difference. First operand has 302 places, 685 transitions, 15045 flow. Second operand 34 states and 1916 transitions. [2023-08-24 03:20:17,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 781 transitions, 17825 flow [2023-08-24 03:20:17,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 781 transitions, 17234 flow, removed 162 selfloop flow, removed 21 redundant places. [2023-08-24 03:20:17,693 INFO L231 Difference]: Finished difference. Result has 315 places, 710 transitions, 16392 flow [2023-08-24 03:20:17,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=14331, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=16392, PETRI_PLACES=315, PETRI_TRANSITIONS=710} [2023-08-24 03:20:17,694 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 295 predicate places. [2023-08-24 03:20:17,694 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 710 transitions, 16392 flow [2023-08-24 03:20:17,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 53.9) internal successors, (1078), 20 states have internal predecessors, (1078), 0 states have call successors, (0), 0 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 03:20:17,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:17,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:17,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:17,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:17,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash 255936920, now seen corresponding path program 17 times [2023-08-24 03:20:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881364837] [2023-08-24 03:20:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:18,048 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 03:20:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881364837] [2023-08-24 03:20:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881364837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80891801] [2023-08-24 03:20:18,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:20:18,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:18,050 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:18,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 03:20:18,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 03:20:18,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:18,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:18,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:18,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:18,452 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 03:20:18,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80891801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:18,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:18,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-24 03:20:18,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581903452] [2023-08-24 03:20:18,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:18,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 03:20:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 03:20:18,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-08-24 03:20:18,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:18,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 710 transitions, 16392 flow. Second operand has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:18,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:18,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:18,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:19,829 INFO L124 PetriNetUnfolderBase]: 1872/3263 cut-off events. [2023-08-24 03:20:19,830 INFO L125 PetriNetUnfolderBase]: For 66348/66348 co-relation queries the response was YES. [2023-08-24 03:20:19,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33149 conditions, 3263 events. 1872/3263 cut-off events. For 66348/66348 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 20127 event pairs, 29 based on Foata normal form. 12/3275 useless extension candidates. Maximal degree in co-relation 32915. Up to 1031 conditions per place. [2023-08-24 03:20:19,921 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 280 selfloop transitions, 621 changer transitions 0/901 dead transitions. [2023-08-24 03:20:19,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 901 transitions, 21440 flow [2023-08-24 03:20:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-24 03:20:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-24 03:20:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2083 transitions. [2023-08-24 03:20:19,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40795142969056014 [2023-08-24 03:20:19,924 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2083 transitions. [2023-08-24 03:20:19,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2083 transitions. [2023-08-24 03:20:19,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:19,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2083 transitions. [2023-08-24 03:20:19,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 56.2972972972973) internal successors, (2083), 37 states have internal predecessors, (2083), 0 states have call successors, (0), 0 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 03:20:19,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 138.0) internal successors, (5244), 38 states have internal predecessors, (5244), 0 states have call successors, (0), 0 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 03:20:19,934 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 138.0) internal successors, (5244), 38 states have internal predecessors, (5244), 0 states have call successors, (0), 0 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 03:20:19,934 INFO L175 Difference]: Start difference. First operand has 315 places, 710 transitions, 16392 flow. Second operand 37 states and 2083 transitions. [2023-08-24 03:20:19,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 901 transitions, 21440 flow [2023-08-24 03:20:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 901 transitions, 20838 flow, removed 79 selfloop flow, removed 23 redundant places. [2023-08-24 03:20:20,564 INFO L231 Difference]: Finished difference. Result has 334 places, 826 transitions, 20347 flow [2023-08-24 03:20:20,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=15912, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=20347, PETRI_PLACES=334, PETRI_TRANSITIONS=826} [2023-08-24 03:20:20,565 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 314 predicate places. [2023-08-24 03:20:20,565 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 826 transitions, 20347 flow [2023-08-24 03:20:20,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:20,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:20,566 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:20,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:20,767 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:20,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1391443388, now seen corresponding path program 18 times [2023-08-24 03:20:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199507713] [2023-08-24 03:20:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:20,908 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 03:20:20,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199507713] [2023-08-24 03:20:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199507713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738756544] [2023-08-24 03:20:20,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:20:20,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:20,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:20,913 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:20,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 03:20:20,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 03:20:20,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:20,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:20,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:21,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:21,288 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 03:20:21,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738756544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:21,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:21,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-24 03:20:21,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130992916] [2023-08-24 03:20:21,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:21,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 03:20:21,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:21,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 03:20:21,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-08-24 03:20:21,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:21,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 826 transitions, 20347 flow. Second operand has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:21,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:21,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:21,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:22,928 INFO L124 PetriNetUnfolderBase]: 2236/3893 cut-off events. [2023-08-24 03:20:22,928 INFO L125 PetriNetUnfolderBase]: For 86375/86375 co-relation queries the response was YES. [2023-08-24 03:20:22,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41775 conditions, 3893 events. 2236/3893 cut-off events. For 86375/86375 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 24876 event pairs, 17 based on Foata normal form. 36/3929 useless extension candidates. Maximal degree in co-relation 41533. Up to 1088 conditions per place. [2023-08-24 03:20:22,961 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 214 selfloop transitions, 838 changer transitions 12/1064 dead transitions. [2023-08-24 03:20:22,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1064 transitions, 27418 flow [2023-08-24 03:20:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 03:20:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 03:20:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2025 transitions. [2023-08-24 03:20:22,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2023-08-24 03:20:22,964 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2025 transitions. [2023-08-24 03:20:22,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2025 transitions. [2023-08-24 03:20:22,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:22,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2025 transitions. [2023-08-24 03:20:22,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 56.25) internal successors, (2025), 36 states have internal predecessors, (2025), 0 states have call successors, (0), 0 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 03:20:22,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 138.0) internal successors, (5106), 37 states have internal predecessors, (5106), 0 states have call successors, (0), 0 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 03:20:22,971 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 138.0) internal successors, (5106), 37 states have internal predecessors, (5106), 0 states have call successors, (0), 0 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 03:20:22,971 INFO L175 Difference]: Start difference. First operand has 334 places, 826 transitions, 20347 flow. Second operand 36 states and 2025 transitions. [2023-08-24 03:20:22,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 1064 transitions, 27418 flow [2023-08-24 03:20:23,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1064 transitions, 27035 flow, removed 131 selfloop flow, removed 11 redundant places. [2023-08-24 03:20:23,768 INFO L231 Difference]: Finished difference. Result has 369 places, 988 transitions, 26686 flow [2023-08-24 03:20:23,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=20022, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=680, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=26686, PETRI_PLACES=369, PETRI_TRANSITIONS=988} [2023-08-24 03:20:23,769 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 349 predicate places. [2023-08-24 03:20:23,769 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 988 transitions, 26686 flow [2023-08-24 03:20:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:23,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:23,770 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:23,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:23,970 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:23,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2134486084, now seen corresponding path program 19 times [2023-08-24 03:20:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:23,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579531060] [2023-08-24 03:20:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:24,148 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 03:20:24,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579531060] [2023-08-24 03:20:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579531060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070783983] [2023-08-24 03:20:24,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:20:24,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:24,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:24,150 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:24,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 03:20:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:24,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:24,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:24,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070783983] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:24,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-24 03:20:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924376523] [2023-08-24 03:20:24,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:24,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 03:20:24,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 03:20:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-08-24 03:20:24,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:24,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 988 transitions, 26686 flow. Second operand has 24 states, 24 states have (on average 53.958333333333336) internal successors, (1295), 24 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 03:20:24,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:24,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:24,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:26,755 INFO L124 PetriNetUnfolderBase]: 3057/5328 cut-off events. [2023-08-24 03:20:26,755 INFO L125 PetriNetUnfolderBase]: For 145748/145748 co-relation queries the response was YES. [2023-08-24 03:20:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61867 conditions, 5328 events. 3057/5328 cut-off events. For 145748/145748 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36120 event pairs, 37 based on Foata normal form. 68/5396 useless extension candidates. Maximal degree in co-relation 61611. Up to 1390 conditions per place. [2023-08-24 03:20:26,806 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 483 selfloop transitions, 943 changer transitions 20/1446 dead transitions. [2023-08-24 03:20:26,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1446 transitions, 40652 flow [2023-08-24 03:20:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-24 03:20:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-24 03:20:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2420 transitions. [2023-08-24 03:20:26,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40781934614088305 [2023-08-24 03:20:26,808 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2420 transitions. [2023-08-24 03:20:26,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2420 transitions. [2023-08-24 03:20:26,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:26,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2420 transitions. [2023-08-24 03:20:26,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 56.27906976744186) internal successors, (2420), 43 states have internal predecessors, (2420), 0 states have call successors, (0), 0 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 03:20:26,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 138.0) internal successors, (6072), 44 states have internal predecessors, (6072), 0 states have call successors, (0), 0 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 03:20:26,817 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 138.0) internal successors, (6072), 44 states have internal predecessors, (6072), 0 states have call successors, (0), 0 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 03:20:26,817 INFO L175 Difference]: Start difference. First operand has 369 places, 988 transitions, 26686 flow. Second operand 43 states and 2420 transitions. [2023-08-24 03:20:26,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1446 transitions, 40652 flow [2023-08-24 03:20:28,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1446 transitions, 39959 flow, removed 242 selfloop flow, removed 14 redundant places. [2023-08-24 03:20:28,533 INFO L231 Difference]: Finished difference. Result has 409 places, 1348 transitions, 39341 flow [2023-08-24 03:20:28,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=26070, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=983, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=39341, PETRI_PLACES=409, PETRI_TRANSITIONS=1348} [2023-08-24 03:20:28,534 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 389 predicate places. [2023-08-24 03:20:28,534 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 1348 transitions, 39341 flow [2023-08-24 03:20:28,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 53.958333333333336) internal successors, (1295), 24 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 03:20:28,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:28,535 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:28,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-24 03:20:28,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:28,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2056386340, now seen corresponding path program 20 times [2023-08-24 03:20:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117665770] [2023-08-24 03:20:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:28,869 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 03:20:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117665770] [2023-08-24 03:20:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117665770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740915229] [2023-08-24 03:20:28,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:20:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:28,873 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:28,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 03:20:28,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:20:28,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:28,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:20:28,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:29,065 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 03:20:29,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:20:29,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740915229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:29,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-08-24 03:20:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562956673] [2023-08-24 03:20:29,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 03:20:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 03:20:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-08-24 03:20:29,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:29,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1348 transitions, 39341 flow. Second operand has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:29,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:29,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:31,662 INFO L124 PetriNetUnfolderBase]: 3133/5482 cut-off events. [2023-08-24 03:20:31,662 INFO L125 PetriNetUnfolderBase]: For 173272/173272 co-relation queries the response was YES. [2023-08-24 03:20:31,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67502 conditions, 5482 events. 3133/5482 cut-off events. For 173272/173272 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37545 event pairs, 121 based on Foata normal form. 58/5540 useless extension candidates. Maximal degree in co-relation 67223. Up to 4808 conditions per place. [2023-08-24 03:20:31,730 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1277 selfloop transitions, 174 changer transitions 18/1469 dead transitions. [2023-08-24 03:20:31,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1469 transitions, 44481 flow [2023-08-24 03:20:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-24 03:20:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-24 03:20:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1641 transitions. [2023-08-24 03:20:31,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41004497751124436 [2023-08-24 03:20:31,732 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1641 transitions. [2023-08-24 03:20:31,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1641 transitions. [2023-08-24 03:20:31,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1641 transitions. [2023-08-24 03:20:31,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 56.58620689655172) internal successors, (1641), 29 states have internal predecessors, (1641), 0 states have call successors, (0), 0 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 03:20:31,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 03:20:31,738 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 138.0) internal successors, (4140), 30 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 03:20:31,738 INFO L175 Difference]: Start difference. First operand has 409 places, 1348 transitions, 39341 flow. Second operand 29 states and 1641 transitions. [2023-08-24 03:20:31,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1469 transitions, 44481 flow [2023-08-24 03:20:34,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1469 transitions, 43819 flow, removed 250 selfloop flow, removed 17 redundant places. [2023-08-24 03:20:34,294 INFO L231 Difference]: Finished difference. Result has 430 places, 1390 transitions, 40544 flow [2023-08-24 03:20:34,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=38542, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=40544, PETRI_PLACES=430, PETRI_TRANSITIONS=1390} [2023-08-24 03:20:34,295 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 410 predicate places. [2023-08-24 03:20:34,296 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1390 transitions, 40544 flow [2023-08-24 03:20:34,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 54.130434782608695) internal successors, (1245), 23 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 03:20:34,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:34,296 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:34,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-24 03:20:34,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-24 03:20:34,501 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:34,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2112030052, now seen corresponding path program 21 times [2023-08-24 03:20:34,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:34,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767167281] [2023-08-24 03:20:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:34,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767167281] [2023-08-24 03:20:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767167281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245972311] [2023-08-24 03:20:34,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:20:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:34,628 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:34,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 03:20:34,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 03:20:34,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:34,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:20:34,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:34,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245972311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:34,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-24 03:20:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934012053] [2023-08-24 03:20:34,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:34,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 03:20:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 03:20:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-08-24 03:20:34,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:34,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1390 transitions, 40544 flow. Second operand has 22 states, 22 states have (on average 53.90909090909091) internal successors, (1186), 22 states have internal predecessors, (1186), 0 states have call successors, (0), 0 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 03:20:34,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:34,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:34,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:37,584 INFO L124 PetriNetUnfolderBase]: 3204/5553 cut-off events. [2023-08-24 03:20:37,584 INFO L125 PetriNetUnfolderBase]: For 169415/169415 co-relation queries the response was YES. [2023-08-24 03:20:37,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68516 conditions, 5553 events. 3204/5553 cut-off events. For 169415/169415 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 37751 event pairs, 123 based on Foata normal form. 28/5581 useless extension candidates. Maximal degree in co-relation 68227. Up to 5003 conditions per place. [2023-08-24 03:20:37,656 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1270 selfloop transitions, 199 changer transitions 4/1473 dead transitions. [2023-08-24 03:20:37,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1473 transitions, 45245 flow [2023-08-24 03:20:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 03:20:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 03:20:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1347 transitions. [2023-08-24 03:20:37,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067028985507246 [2023-08-24 03:20:37,658 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1347 transitions. [2023-08-24 03:20:37,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1347 transitions. [2023-08-24 03:20:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1347 transitions. [2023-08-24 03:20:37,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 56.125) internal successors, (1347), 24 states have internal predecessors, (1347), 0 states have call successors, (0), 0 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 03:20:37,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 138.0) internal successors, (3450), 25 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 03:20:37,663 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 138.0) internal successors, (3450), 25 states have internal predecessors, (3450), 0 states have call successors, (0), 0 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 03:20:37,663 INFO L175 Difference]: Start difference. First operand has 430 places, 1390 transitions, 40544 flow. Second operand 24 states and 1347 transitions. [2023-08-24 03:20:37,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1473 transitions, 45245 flow [2023-08-24 03:20:40,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1473 transitions, 44598 flow, removed 132 selfloop flow, removed 19 redundant places. [2023-08-24 03:20:40,298 INFO L231 Difference]: Finished difference. Result has 441 places, 1436 transitions, 41897 flow [2023-08-24 03:20:40,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=39692, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=41897, PETRI_PLACES=441, PETRI_TRANSITIONS=1436} [2023-08-24 03:20:40,299 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 421 predicate places. [2023-08-24 03:20:40,299 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 1436 transitions, 41897 flow [2023-08-24 03:20:40,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 53.90909090909091) internal successors, (1186), 22 states have internal predecessors, (1186), 0 states have call successors, (0), 0 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 03:20:40,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:40,300 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:40,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-24 03:20:40,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:40,505 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:40,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1701325342, now seen corresponding path program 22 times [2023-08-24 03:20:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:40,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740625439] [2023-08-24 03:20:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:40,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740625439] [2023-08-24 03:20:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740625439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101727846] [2023-08-24 03:20:40,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:20:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:40,636 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:40,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-24 03:20:40,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:20:40,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:40,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-24 03:20:40,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:40,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:40,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101727846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:40,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:40,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 10 [2023-08-24 03:20:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687102823] [2023-08-24 03:20:40,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 03:20:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 03:20:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-24 03:20:40,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 138 [2023-08-24 03:20:40,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1436 transitions, 41897 flow. Second operand has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 03:20:40,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:40,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 138 [2023-08-24 03:20:40,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:44,329 INFO L124 PetriNetUnfolderBase]: 4340/7493 cut-off events. [2023-08-24 03:20:44,329 INFO L125 PetriNetUnfolderBase]: For 215363/215363 co-relation queries the response was YES. [2023-08-24 03:20:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92868 conditions, 7493 events. 4340/7493 cut-off events. For 215363/215363 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 53471 event pairs, 128 based on Foata normal form. 1/7493 useless extension candidates. Maximal degree in co-relation 92481. Up to 4210 conditions per place. [2023-08-24 03:20:44,433 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 1303 selfloop transitions, 610 changer transitions 100/2016 dead transitions. [2023-08-24 03:20:44,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 2016 transitions, 62115 flow [2023-08-24 03:20:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 03:20:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 03:20:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2023-08-24 03:20:44,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730848861283644 [2023-08-24 03:20:44,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2023-08-24 03:20:44,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2023-08-24 03:20:44,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:44,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2023-08-24 03:20:44,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 03:20:44,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 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 03:20:44,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 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 03:20:44,437 INFO L175 Difference]: Start difference. First operand has 441 places, 1436 transitions, 41897 flow. Second operand 7 states and 457 transitions. [2023-08-24 03:20:44,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 2016 transitions, 62115 flow [2023-08-24 03:20:48,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 2016 transitions, 61557 flow, removed 216 selfloop flow, removed 11 redundant places. [2023-08-24 03:20:48,222 INFO L231 Difference]: Finished difference. Result has 439 places, 1725 transitions, 52346 flow [2023-08-24 03:20:48,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=41537, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=826, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=52346, PETRI_PLACES=439, PETRI_TRANSITIONS=1725} [2023-08-24 03:20:48,224 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 419 predicate places. [2023-08-24 03:20:48,224 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 1725 transitions, 52346 flow [2023-08-24 03:20:48,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 03:20:48,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:48,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:48,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-24 03:20:48,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:48,425 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:48,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2001906576, now seen corresponding path program 23 times [2023-08-24 03:20:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:48,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867596328] [2023-08-24 03:20:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867596328] [2023-08-24 03:20:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867596328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736395243] [2023-08-24 03:20:48,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:20:48,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:48,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:48,591 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:48,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-24 03:20:48,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 03:20:48,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:48,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:20:48,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:20:48,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:20:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736395243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:48,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-08-24 03:20:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148770670] [2023-08-24 03:20:48,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:20:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:20:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:20:48,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:48,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1725 transitions, 52346 flow. Second operand has 16 states, 16 states have (on average 54.625) internal successors, (874), 16 states have internal predecessors, (874), 0 states have call successors, (0), 0 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 03:20:48,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:48,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:48,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:20:52,949 INFO L124 PetriNetUnfolderBase]: 4359/7605 cut-off events. [2023-08-24 03:20:52,949 INFO L125 PetriNetUnfolderBase]: For 254649/254649 co-relation queries the response was YES. [2023-08-24 03:20:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99048 conditions, 7605 events. 4359/7605 cut-off events. For 254649/254649 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 55099 event pairs, 175 based on Foata normal form. 58/7663 useless extension candidates. Maximal degree in co-relation 98635. Up to 5980 conditions per place. [2023-08-24 03:20:53,056 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1473 selfloop transitions, 417 changer transitions 21/1911 dead transitions. [2023-08-24 03:20:53,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1911 transitions, 60435 flow [2023-08-24 03:20:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 03:20:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 03:20:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1501 transitions. [2023-08-24 03:20:53,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41833890746934227 [2023-08-24 03:20:53,058 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1501 transitions. [2023-08-24 03:20:53,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1501 transitions. [2023-08-24 03:20:53,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:20:53,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1501 transitions. [2023-08-24 03:20:53,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 57.73076923076923) internal successors, (1501), 26 states have internal predecessors, (1501), 0 states have call successors, (0), 0 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 03:20:53,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 138.0) internal successors, (3726), 27 states have internal predecessors, (3726), 0 states have call successors, (0), 0 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 03:20:53,063 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 138.0) internal successors, (3726), 27 states have internal predecessors, (3726), 0 states have call successors, (0), 0 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 03:20:53,063 INFO L175 Difference]: Start difference. First operand has 439 places, 1725 transitions, 52346 flow. Second operand 26 states and 1501 transitions. [2023-08-24 03:20:53,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1911 transitions, 60435 flow [2023-08-24 03:20:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1911 transitions, 60017 flow, removed 126 selfloop flow, removed 3 redundant places. [2023-08-24 03:20:56,916 INFO L231 Difference]: Finished difference. Result has 471 places, 1802 transitions, 55787 flow [2023-08-24 03:20:56,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=51969, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=55787, PETRI_PLACES=471, PETRI_TRANSITIONS=1802} [2023-08-24 03:20:56,918 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 451 predicate places. [2023-08-24 03:20:56,918 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 1802 transitions, 55787 flow [2023-08-24 03:20:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.625) internal successors, (874), 16 states have internal predecessors, (874), 0 states have call successors, (0), 0 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 03:20:56,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:20:56,918 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:20:56,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-24 03:20:57,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-24 03:20:57,119 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:20:57,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:20:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash -953666512, now seen corresponding path program 24 times [2023-08-24 03:20:57,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:20:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475787971] [2023-08-24 03:20:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:20:57,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:20:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:20:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:20:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475787971] [2023-08-24 03:20:57,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475787971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:20:57,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671624276] [2023-08-24 03:20:57,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:20:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:20:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:20:57,273 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:20:57,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-24 03:20:57,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 03:20:57,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:20:57,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 03:20:57,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:20:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:57,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:20:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:20:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671624276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:20:57,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:20:57,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-08-24 03:20:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731520760] [2023-08-24 03:20:57,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:20:57,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 03:20:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:20:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 03:20:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-08-24 03:20:57,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:20:57,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1802 transitions, 55787 flow. Second operand has 24 states, 24 states have (on average 53.708333333333336) internal successors, (1289), 24 states have internal predecessors, (1289), 0 states have call successors, (0), 0 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 03:20:57,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:20:57,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:20:57,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:21:03,290 INFO L124 PetriNetUnfolderBase]: 4802/8414 cut-off events. [2023-08-24 03:21:03,290 INFO L125 PetriNetUnfolderBase]: For 341731/341731 co-relation queries the response was YES. [2023-08-24 03:21:03,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111146 conditions, 8414 events. 4802/8414 cut-off events. For 341731/341731 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 61930 event pairs, 28 based on Foata normal form. 154/8568 useless extension candidates. Maximal degree in co-relation 110957. Up to 2258 conditions per place. [2023-08-24 03:21:03,412 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 438 selfloop transitions, 1655 changer transitions 44/2137 dead transitions. [2023-08-24 03:21:03,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 2137 transitions, 68936 flow [2023-08-24 03:21:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-24 03:21:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-24 03:21:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2759 transitions. [2023-08-24 03:21:03,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080153800650695 [2023-08-24 03:21:03,415 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2759 transitions. [2023-08-24 03:21:03,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2759 transitions. [2023-08-24 03:21:03,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:21:03,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2759 transitions. [2023-08-24 03:21:03,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 56.30612244897959) internal successors, (2759), 49 states have internal predecessors, (2759), 0 states have call successors, (0), 0 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 03:21:03,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 138.0) internal successors, (6900), 50 states have internal predecessors, (6900), 0 states have call successors, (0), 0 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 03:21:03,424 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 138.0) internal successors, (6900), 50 states have internal predecessors, (6900), 0 states have call successors, (0), 0 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 03:21:03,424 INFO L175 Difference]: Start difference. First operand has 471 places, 1802 transitions, 55787 flow. Second operand 49 states and 2759 transitions. [2023-08-24 03:21:03,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 2137 transitions, 68936 flow [2023-08-24 03:21:07,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 2137 transitions, 67268 flow, removed 277 selfloop flow, removed 9 redundant places. [2023-08-24 03:21:07,724 INFO L231 Difference]: Finished difference. Result has 519 places, 1994 transitions, 65907 flow [2023-08-24 03:21:07,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=54331, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=65907, PETRI_PLACES=519, PETRI_TRANSITIONS=1994} [2023-08-24 03:21:07,726 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 499 predicate places. [2023-08-24 03:21:07,726 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1994 transitions, 65907 flow [2023-08-24 03:21:07,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 53.708333333333336) internal successors, (1289), 24 states have internal predecessors, (1289), 0 states have call successors, (0), 0 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 03:21:07,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:21:07,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:21:07,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-24 03:21:07,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-24 03:21:07,931 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:21:07,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:21:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2059207202, now seen corresponding path program 25 times [2023-08-24 03:21:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:21:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719257247] [2023-08-24 03:21:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:21:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:21:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:21:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:21:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719257247] [2023-08-24 03:21:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719257247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:21:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897681119] [2023-08-24 03:21:08,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:21:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:21:08,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:21:08,083 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:21:08,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-24 03:21:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:21:08,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 03:21:08,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:21:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:08,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:21:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:08,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897681119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:21:08,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:21:08,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-08-24 03:21:08,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832390427] [2023-08-24 03:21:08,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:21:08,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 03:21:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:21:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 03:21:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-08-24 03:21:08,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:21:08,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1994 transitions, 65907 flow. Second operand has 24 states, 24 states have (on average 53.708333333333336) internal successors, (1289), 24 states have internal predecessors, (1289), 0 states have call successors, (0), 0 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 03:21:08,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:21:08,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:21:08,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:21:14,260 INFO L124 PetriNetUnfolderBase]: 5209/9146 cut-off events. [2023-08-24 03:21:14,260 INFO L125 PetriNetUnfolderBase]: For 401972/401972 co-relation queries the response was YES. [2023-08-24 03:21:14,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127298 conditions, 9146 events. 5209/9146 cut-off events. For 401972/401972 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 68250 event pairs, 165 based on Foata normal form. 160/9306 useless extension candidates. Maximal degree in co-relation 126910. Up to 7509 conditions per place. [2023-08-24 03:21:14,379 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1789 selfloop transitions, 452 changer transitions 21/2262 dead transitions. [2023-08-24 03:21:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 2262 transitions, 78241 flow [2023-08-24 03:21:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-24 03:21:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-24 03:21:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1532 transitions. [2023-08-24 03:21:14,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111647879763822 [2023-08-24 03:21:14,381 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1532 transitions. [2023-08-24 03:21:14,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1532 transitions. [2023-08-24 03:21:14,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:21:14,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1532 transitions. [2023-08-24 03:21:14,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 56.74074074074074) internal successors, (1532), 27 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 03:21:14,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 138.0) internal successors, (3864), 28 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 03:21:14,385 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 138.0) internal successors, (3864), 28 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 03:21:14,385 INFO L175 Difference]: Start difference. First operand has 519 places, 1994 transitions, 65907 flow. Second operand 27 states and 1532 transitions. [2023-08-24 03:21:14,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 2262 transitions, 78241 flow [2023-08-24 03:21:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 2262 transitions, 75573 flow, removed 868 selfloop flow, removed 23 redundant places. [2023-08-24 03:21:20,832 INFO L231 Difference]: Finished difference. Result has 534 places, 2182 transitions, 71493 flow [2023-08-24 03:21:20,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=63173, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=71493, PETRI_PLACES=534, PETRI_TRANSITIONS=2182} [2023-08-24 03:21:20,834 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 514 predicate places. [2023-08-24 03:21:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 2182 transitions, 71493 flow [2023-08-24 03:21:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 53.708333333333336) internal successors, (1289), 24 states have internal predecessors, (1289), 0 states have call successors, (0), 0 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 03:21:20,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:21:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:21:20,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-24 03:21:21,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-24 03:21:21,040 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:21:21,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:21:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1398298695, now seen corresponding path program 26 times [2023-08-24 03:21:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:21:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702534096] [2023-08-24 03:21:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:21:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:21:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:21:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:21:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702534096] [2023-08-24 03:21:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702534096] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:21:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950290039] [2023-08-24 03:21:21,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:21:21,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:21:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:21:21,205 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:21:21,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-24 03:21:21,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:21:21,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:21:21,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:21:21,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:21:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:21,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:21:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950290039] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:21:21,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:21:21,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2023-08-24 03:21:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846159837] [2023-08-24 03:21:21,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:21:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 03:21:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:21:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 03:21:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-08-24 03:21:21,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:21:21,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 2182 transitions, 71493 flow. Second operand has 26 states, 26 states have (on average 53.96153846153846) internal successors, (1403), 26 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 03:21:21,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:21:21,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:21:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:21:29,103 INFO L124 PetriNetUnfolderBase]: 6310/11099 cut-off events. [2023-08-24 03:21:29,103 INFO L125 PetriNetUnfolderBase]: For 421872/421872 co-relation queries the response was YES. [2023-08-24 03:21:29,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152753 conditions, 11099 events. 6310/11099 cut-off events. For 421872/421872 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 85542 event pairs, 62 based on Foata normal form. 24/11123 useless extension candidates. Maximal degree in co-relation 151452. Up to 3810 conditions per place. [2023-08-24 03:21:29,272 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 520 selfloop transitions, 2492 changer transitions 50/3062 dead transitions. [2023-08-24 03:21:29,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 3062 transitions, 104514 flow [2023-08-24 03:21:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-24 03:21:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-24 03:21:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2602 transitions. [2023-08-24 03:21:29,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40989287964713295 [2023-08-24 03:21:29,275 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2602 transitions. [2023-08-24 03:21:29,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2602 transitions. [2023-08-24 03:21:29,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:21:29,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2602 transitions. [2023-08-24 03:21:29,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 56.56521739130435) internal successors, (2602), 46 states have internal predecessors, (2602), 0 states have call successors, (0), 0 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 03:21:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 138.0) internal successors, (6486), 47 states have internal predecessors, (6486), 0 states have call successors, (0), 0 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 03:21:29,284 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 138.0) internal successors, (6486), 47 states have internal predecessors, (6486), 0 states have call successors, (0), 0 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 03:21:29,284 INFO L175 Difference]: Start difference. First operand has 534 places, 2182 transitions, 71493 flow. Second operand 46 states and 2602 transitions. [2023-08-24 03:21:29,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 3062 transitions, 104514 flow [2023-08-24 03:21:37,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 3062 transitions, 103584 flow, removed 425 selfloop flow, removed 10 redundant places. [2023-08-24 03:21:37,074 INFO L231 Difference]: Finished difference. Result has 580 places, 2844 transitions, 101300 flow [2023-08-24 03:21:37,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=70647, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1831, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=101300, PETRI_PLACES=580, PETRI_TRANSITIONS=2844} [2023-08-24 03:21:37,076 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 560 predicate places. [2023-08-24 03:21:37,077 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 2844 transitions, 101300 flow [2023-08-24 03:21:37,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 53.96153846153846) internal successors, (1403), 26 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 03:21:37,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:21:37,077 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:21:37,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-24 03:21:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-24 03:21:37,282 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:21:37,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:21:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -18478395, now seen corresponding path program 27 times [2023-08-24 03:21:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:21:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733332309] [2023-08-24 03:21:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:21:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:21:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:21:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:37,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:21:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733332309] [2023-08-24 03:21:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733332309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:21:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294993882] [2023-08-24 03:21:37,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:21:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:21:37,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:21:37,455 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:21:37,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-24 03:21:37,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:21:37,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:21:37,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:21:37,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:21:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:37,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:21:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294993882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:21:37,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:21:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-24 03:21:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462902941] [2023-08-24 03:21:37,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:21:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 03:21:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:21:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 03:21:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-08-24 03:21:37,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:21:37,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 2844 transitions, 101300 flow. Second operand has 27 states, 27 states have (on average 53.96296296296296) internal successors, (1457), 27 states have internal predecessors, (1457), 0 states have call successors, (0), 0 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 03:21:37,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:21:37,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:21:37,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:21:47,176 INFO L124 PetriNetUnfolderBase]: 6839/11884 cut-off events. [2023-08-24 03:21:47,177 INFO L125 PetriNetUnfolderBase]: For 478529/478529 co-relation queries the response was YES. [2023-08-24 03:21:47,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174214 conditions, 11884 events. 6839/11884 cut-off events. For 478529/478529 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 90958 event pairs, 141 based on Foata normal form. 42/11926 useless extension candidates. Maximal degree in co-relation 173336. Up to 4544 conditions per place. [2023-08-24 03:21:47,349 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 658 selfloop transitions, 2582 changer transitions 3/3243 dead transitions. [2023-08-24 03:21:47,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 3243 transitions, 119466 flow [2023-08-24 03:21:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-24 03:21:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-24 03:21:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2650 transitions. [2023-08-24 03:21:47,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085723095898859 [2023-08-24 03:21:47,352 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2650 transitions. [2023-08-24 03:21:47,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2650 transitions. [2023-08-24 03:21:47,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:21:47,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2650 transitions. [2023-08-24 03:21:47,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 56.38297872340426) internal successors, (2650), 47 states have internal predecessors, (2650), 0 states have call successors, (0), 0 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 03:21:47,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 138.0) internal successors, (6624), 48 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 03:21:47,359 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 138.0) internal successors, (6624), 48 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 03:21:47,359 INFO L175 Difference]: Start difference. First operand has 580 places, 2844 transitions, 101300 flow. Second operand 47 states and 2650 transitions. [2023-08-24 03:21:47,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 3243 transitions, 119466 flow [2023-08-24 03:21:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 3243 transitions, 117045 flow, removed 1127 selfloop flow, removed 13 redundant places. [2023-08-24 03:21:58,941 INFO L231 Difference]: Finished difference. Result has 625 places, 3115 transitions, 116306 flow [2023-08-24 03:21:58,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=99426, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=116306, PETRI_PLACES=625, PETRI_TRANSITIONS=3115} [2023-08-24 03:21:58,943 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 605 predicate places. [2023-08-24 03:21:58,943 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 3115 transitions, 116306 flow [2023-08-24 03:21:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 53.96296296296296) internal successors, (1457), 27 states have internal predecessors, (1457), 0 states have call successors, (0), 0 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 03:21:58,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:21:58,944 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:21:58,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-24 03:21:59,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:21:59,148 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:21:59,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:21:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 929866181, now seen corresponding path program 28 times [2023-08-24 03:21:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:21:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61180042] [2023-08-24 03:21:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:21:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:21:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:21:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:21:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61180042] [2023-08-24 03:21:59,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61180042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:21:59,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091087975] [2023-08-24 03:21:59,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:21:59,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:21:59,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:21:59,309 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:21:59,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-24 03:21:59,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:21:59,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:21:59,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:21:59,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:21:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:59,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:21:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:21:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091087975] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:21:59,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:21:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-08-24 03:21:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416074821] [2023-08-24 03:21:59,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:21:59,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 03:21:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:21:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 03:21:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2023-08-24 03:21:59,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:21:59,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 3115 transitions, 116306 flow. Second operand has 25 states, 25 states have (on average 53.6) internal successors, (1340), 25 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 03:21:59,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:21:59,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:21:59,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:22:10,898 INFO L124 PetriNetUnfolderBase]: 7620/13035 cut-off events. [2023-08-24 03:22:10,898 INFO L125 PetriNetUnfolderBase]: For 545113/545113 co-relation queries the response was YES. [2023-08-24 03:22:11,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199694 conditions, 13035 events. 7620/13035 cut-off events. For 545113/545113 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 99097 event pairs, 237 based on Foata normal form. 52/13087 useless extension candidates. Maximal degree in co-relation 198766. Up to 6459 conditions per place. [2023-08-24 03:22:11,099 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 1350 selfloop transitions, 2311 changer transitions 6/3667 dead transitions. [2023-08-24 03:22:11,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 3667 transitions, 141387 flow [2023-08-24 03:22:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-08-24 03:22:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-08-24 03:22:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3683 transitions. [2023-08-24 03:22:11,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043697848045674 [2023-08-24 03:22:11,102 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3683 transitions. [2023-08-24 03:22:11,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3683 transitions. [2023-08-24 03:22:11,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:22:11,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3683 transitions. [2023-08-24 03:22:11,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 55.803030303030305) internal successors, (3683), 66 states have internal predecessors, (3683), 0 states have call successors, (0), 0 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 03:22:11,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 138.0) internal successors, (9246), 67 states have internal predecessors, (9246), 0 states have call successors, (0), 0 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 03:22:11,112 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 138.0) internal successors, (9246), 67 states have internal predecessors, (9246), 0 states have call successors, (0), 0 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 03:22:11,113 INFO L175 Difference]: Start difference. First operand has 625 places, 3115 transitions, 116306 flow. Second operand 66 states and 3683 transitions. [2023-08-24 03:22:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 3667 transitions, 141387 flow [2023-08-24 03:22:26,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 3667 transitions, 140537 flow, removed 338 selfloop flow, removed 13 redundant places. [2023-08-24 03:22:26,807 INFO L231 Difference]: Finished difference. Result has 693 places, 3513 transitions, 136886 flow [2023-08-24 03:22:26,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=115281, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1939, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=136886, PETRI_PLACES=693, PETRI_TRANSITIONS=3513} [2023-08-24 03:22:26,810 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 673 predicate places. [2023-08-24 03:22:26,810 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 3513 transitions, 136886 flow [2023-08-24 03:22:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 53.6) internal successors, (1340), 25 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 03:22:26,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:22:26,810 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:22:26,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-24 03:22:27,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:22:27,011 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:22:27,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:22:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash -789072171, now seen corresponding path program 29 times [2023-08-24 03:22:27,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:22:27,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173020121] [2023-08-24 03:22:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:22:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:22:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:22:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:22:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:22:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173020121] [2023-08-24 03:22:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173020121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:22:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447127454] [2023-08-24 03:22:27,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:22:27,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:22:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:22:27,165 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:22:27,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-24 03:22:27,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 03:22:27,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:22:27,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:22:27,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:22:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:22:27,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:22:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:22:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447127454] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:22:27,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:22:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-08-24 03:22:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608634056] [2023-08-24 03:22:27,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:22:27,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 03:22:27,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:22:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 03:22:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-08-24 03:22:27,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:22:27,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 3513 transitions, 136886 flow. Second operand has 25 states, 25 states have (on average 53.6) internal successors, (1340), 25 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 03:22:27,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:22:27,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:22:27,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:22:49,846 INFO L124 PetriNetUnfolderBase]: 7794/13487 cut-off events. [2023-08-24 03:22:49,846 INFO L125 PetriNetUnfolderBase]: For 611694/611694 co-relation queries the response was YES. [2023-08-24 03:22:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209042 conditions, 13487 events. 7794/13487 cut-off events. For 611694/611694 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 105080 event pairs, 79 based on Foata normal form. 72/13559 useless extension candidates. Maximal degree in co-relation 208827. Up to 4746 conditions per place. [2023-08-24 03:22:50,614 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 1022 selfloop transitions, 2700 changer transitions 3/3725 dead transitions. [2023-08-24 03:22:50,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 3725 transitions, 147934 flow [2023-08-24 03:22:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-24 03:22:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-24 03:22:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 3807 transitions. [2023-08-24 03:22:50,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40569053708439895 [2023-08-24 03:22:50,618 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 3807 transitions. [2023-08-24 03:22:50,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 3807 transitions. [2023-08-24 03:22:50,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:22:50,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 3807 transitions. [2023-08-24 03:22:50,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 55.98529411764706) internal successors, (3807), 68 states have internal predecessors, (3807), 0 states have call successors, (0), 0 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 03:22:50,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 138.0) internal successors, (9522), 69 states have internal predecessors, (9522), 0 states have call successors, (0), 0 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 03:22:50,628 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 138.0) internal successors, (9522), 69 states have internal predecessors, (9522), 0 states have call successors, (0), 0 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 03:22:50,628 INFO L175 Difference]: Start difference. First operand has 693 places, 3513 transitions, 136886 flow. Second operand 68 states and 3807 transitions. [2023-08-24 03:22:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 3725 transitions, 147934 flow [2023-08-24 03:23:07,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 3725 transitions, 144549 flow, removed 664 selfloop flow, removed 30 redundant places. [2023-08-24 03:23:07,919 INFO L231 Difference]: Finished difference. Result has 726 places, 3566 transitions, 141148 flow [2023-08-24 03:23:07,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=132645, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2629, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=141148, PETRI_PLACES=726, PETRI_TRANSITIONS=3566} [2023-08-24 03:23:07,923 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 706 predicate places. [2023-08-24 03:23:07,924 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 3566 transitions, 141148 flow [2023-08-24 03:23:07,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 53.6) internal successors, (1340), 25 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 03:23:07,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:23:07,924 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:23:07,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-24 03:23:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-24 03:23:08,129 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:23:08,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:23:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1602183593, now seen corresponding path program 30 times [2023-08-24 03:23:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:23:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634290455] [2023-08-24 03:23:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:23:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:23:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:23:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:08,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:23:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634290455] [2023-08-24 03:23:08,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634290455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:23:08,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495371742] [2023-08-24 03:23:08,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:23:08,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:23:08,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:23:08,295 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:23:08,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-24 03:23:08,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 03:23:08,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:23:08,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 03:23:08,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:23:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:08,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:23:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495371742] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:23:08,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:23:08,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-24 03:23:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741242830] [2023-08-24 03:23:08,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:23:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 03:23:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:23:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 03:23:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2023-08-24 03:23:08,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:23:08,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 3566 transitions, 141148 flow. Second operand has 27 states, 27 states have (on average 53.888888888888886) internal successors, (1455), 27 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 03:23:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:23:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:23:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:23:24,052 INFO L124 PetriNetUnfolderBase]: 8301/14394 cut-off events. [2023-08-24 03:23:24,052 INFO L125 PetriNetUnfolderBase]: For 640298/640298 co-relation queries the response was YES. [2023-08-24 03:23:24,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226397 conditions, 14394 events. 8301/14394 cut-off events. For 640298/640298 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 113221 event pairs, 79 based on Foata normal form. 66/14460 useless extension candidates. Maximal degree in co-relation 225446. Up to 3955 conditions per place. [2023-08-24 03:23:24,271 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 557 selfloop transitions, 3347 changer transitions 33/3937 dead transitions. [2023-08-24 03:23:24,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 3937 transitions, 160164 flow [2023-08-24 03:23:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 03:23:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 03:23:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3090 transitions. [2023-08-24 03:23:24,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-08-24 03:23:24,274 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3090 transitions. [2023-08-24 03:23:24,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3090 transitions. [2023-08-24 03:23:24,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:23:24,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3090 transitions. [2023-08-24 03:23:24,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 56.18181818181818) internal successors, (3090), 55 states have internal predecessors, (3090), 0 states have call successors, (0), 0 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 03:23:24,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 138.0) internal successors, (7728), 56 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 03:23:24,280 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 138.0) internal successors, (7728), 56 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 03:23:24,280 INFO L175 Difference]: Start difference. First operand has 726 places, 3566 transitions, 141148 flow. Second operand 55 states and 3090 transitions. [2023-08-24 03:23:24,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 3937 transitions, 160164 flow [2023-08-24 03:23:44,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 3937 transitions, 156482 flow, removed 129 selfloop flow, removed 52 redundant places. [2023-08-24 03:23:44,775 INFO L231 Difference]: Finished difference. Result has 735 places, 3770 transitions, 153897 flow [2023-08-24 03:23:44,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=137298, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=153897, PETRI_PLACES=735, PETRI_TRANSITIONS=3770} [2023-08-24 03:23:44,777 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 715 predicate places. [2023-08-24 03:23:44,777 INFO L495 AbstractCegarLoop]: Abstraction has has 735 places, 3770 transitions, 153897 flow [2023-08-24 03:23:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 53.888888888888886) internal successors, (1455), 27 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 03:23:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:23:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:23:44,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-24 03:23:44,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:23:44,981 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:23:44,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:23:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 555034459, now seen corresponding path program 31 times [2023-08-24 03:23:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:23:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313342909] [2023-08-24 03:23:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:23:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:23:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:23:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:45,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:23:45,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313342909] [2023-08-24 03:23:45,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313342909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:23:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356698251] [2023-08-24 03:23:45,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:23:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:23:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:23:45,141 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:23:45,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-24 03:23:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:23:45,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:23:45,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:23:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:45,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:23:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:23:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356698251] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:23:45,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:23:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-24 03:23:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066308636] [2023-08-24 03:23:45,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:23:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 03:23:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:23:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 03:23:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-08-24 03:23:45,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:23:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 3770 transitions, 153897 flow. Second operand has 27 states, 27 states have (on average 53.888888888888886) internal successors, (1455), 27 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 03:23:45,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:23:45,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:23:45,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:24:01,550 INFO L124 PetriNetUnfolderBase]: 8516/14793 cut-off events. [2023-08-24 03:24:01,551 INFO L125 PetriNetUnfolderBase]: For 714392/714392 co-relation queries the response was YES. [2023-08-24 03:24:01,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240699 conditions, 14793 events. 8516/14793 cut-off events. For 714392/714392 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 117279 event pairs, 107 based on Foata normal form. 22/14815 useless extension candidates. Maximal degree in co-relation 239715. Up to 5005 conditions per place. [2023-08-24 03:24:01,788 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 684 selfloop transitions, 3319 changer transitions 29/4032 dead transitions. [2023-08-24 03:24:01,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 785 places, 4032 transitions, 168868 flow [2023-08-24 03:24:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-24 03:24:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-24 03:24:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2867 transitions. [2023-08-24 03:24:01,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40736004546746235 [2023-08-24 03:24:01,795 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2867 transitions. [2023-08-24 03:24:01,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2867 transitions. [2023-08-24 03:24:01,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:24:01,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2867 transitions. [2023-08-24 03:24:01,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 56.21568627450981) internal successors, (2867), 51 states have internal predecessors, (2867), 0 states have call successors, (0), 0 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 03:24:01,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 138.0) internal successors, (7176), 52 states have internal predecessors, (7176), 0 states have call successors, (0), 0 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 03:24:01,801 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 138.0) internal successors, (7176), 52 states have internal predecessors, (7176), 0 states have call successors, (0), 0 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 03:24:01,801 INFO L175 Difference]: Start difference. First operand has 735 places, 3770 transitions, 153897 flow. Second operand 51 states and 2867 transitions. [2023-08-24 03:24:01,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 785 places, 4032 transitions, 168868 flow [2023-08-24 03:24:27,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 4032 transitions, 163967 flow, removed 394 selfloop flow, removed 37 redundant places. [2023-08-24 03:24:27,138 INFO L231 Difference]: Finished difference. Result has 753 places, 3867 transitions, 160559 flow [2023-08-24 03:24:27,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=149172, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=160559, PETRI_PLACES=753, PETRI_TRANSITIONS=3867} [2023-08-24 03:24:27,141 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 733 predicate places. [2023-08-24 03:24:27,142 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 3867 transitions, 160559 flow [2023-08-24 03:24:27,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 53.888888888888886) internal successors, (1455), 27 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 03:24:27,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:24:27,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:24:27,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-24 03:24:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:24:27,343 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:24:27,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:24:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1958287365, now seen corresponding path program 32 times [2023-08-24 03:24:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:24:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263633731] [2023-08-24 03:24:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:24:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:24:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:24:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:24:27,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:24:27,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263633731] [2023-08-24 03:24:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263633731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:24:27,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146159776] [2023-08-24 03:24:27,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:24:27,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:24:27,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:24:27,589 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:24:27,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-24 03:24:27,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:24:27,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:24:27,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:24:27,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:24:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:24:27,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:24:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:24:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146159776] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:24:28,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:24:28,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2023-08-24 03:24:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132458454] [2023-08-24 03:24:28,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:24:28,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 03:24:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:24:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 03:24:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-08-24 03:24:28,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:24:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 3867 transitions, 160559 flow. Second operand has 28 states, 28 states have (on average 53.92857142857143) internal successors, (1510), 28 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:24:28,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:24:28,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:24:28,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:24:45,810 INFO L124 PetriNetUnfolderBase]: 9088/15779 cut-off events. [2023-08-24 03:24:45,810 INFO L125 PetriNetUnfolderBase]: For 803580/803580 co-relation queries the response was YES. [2023-08-24 03:24:45,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261421 conditions, 15779 events. 9088/15779 cut-off events. For 803580/803580 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 126117 event pairs, 83 based on Foata normal form. 32/15811 useless extension candidates. Maximal degree in co-relation 260436. Up to 4647 conditions per place. [2023-08-24 03:24:46,081 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 721 selfloop transitions, 3532 changer transitions 20/4273 dead transitions. [2023-08-24 03:24:46,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 4273 transitions, 182674 flow [2023-08-24 03:24:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-24 03:24:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-24 03:24:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2756 transitions. [2023-08-24 03:24:46,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075717243419107 [2023-08-24 03:24:46,085 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2756 transitions. [2023-08-24 03:24:46,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2756 transitions. [2023-08-24 03:24:46,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:24:46,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2756 transitions. [2023-08-24 03:24:46,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 56.244897959183675) internal successors, (2756), 49 states have internal predecessors, (2756), 0 states have call successors, (0), 0 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 03:24:46,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 138.0) internal successors, (6900), 50 states have internal predecessors, (6900), 0 states have call successors, (0), 0 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 03:24:46,093 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 138.0) internal successors, (6900), 50 states have internal predecessors, (6900), 0 states have call successors, (0), 0 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 03:24:46,093 INFO L175 Difference]: Start difference. First operand has 753 places, 3867 transitions, 160559 flow. Second operand 49 states and 2756 transitions. [2023-08-24 03:24:46,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 4273 transitions, 182674 flow [2023-08-24 03:25:14,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 4273 transitions, 181065 flow, removed 302 selfloop flow, removed 24 redundant places. [2023-08-24 03:25:14,586 INFO L231 Difference]: Finished difference. Result has 786 places, 4143 transitions, 180337 flow [2023-08-24 03:25:14,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=159085, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=180337, PETRI_PLACES=786, PETRI_TRANSITIONS=4143} [2023-08-24 03:25:14,589 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 766 predicate places. [2023-08-24 03:25:14,589 INFO L495 AbstractCegarLoop]: Abstraction has has 786 places, 4143 transitions, 180337 flow [2023-08-24 03:25:14,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 53.92857142857143) internal successors, (1510), 28 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:25:14,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:25:14,589 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:25:14,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-24 03:25:14,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-24 03:25:14,790 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:25:14,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:25:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash -553947031, now seen corresponding path program 33 times [2023-08-24 03:25:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:25:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65138706] [2023-08-24 03:25:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:25:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:25:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:25:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:25:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:25:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65138706] [2023-08-24 03:25:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65138706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:25:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129434875] [2023-08-24 03:25:14,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:25:14,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:25:14,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:25:14,949 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:25:14,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-24 03:25:15,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 03:25:15,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:25:15,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 03:25:15,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:25:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:25:15,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:25:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:25:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129434875] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:25:15,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:25:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2023-08-24 03:25:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191598190] [2023-08-24 03:25:15,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:25:15,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 03:25:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:25:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 03:25:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2023-08-24 03:25:15,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:25:15,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 786 places, 4143 transitions, 180337 flow. Second operand has 28 states, 28 states have (on average 53.857142857142854) internal successors, (1508), 28 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:25:15,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:25:15,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:25:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:25:36,837 INFO L124 PetriNetUnfolderBase]: 9731/17002 cut-off events. [2023-08-24 03:25:36,838 INFO L125 PetriNetUnfolderBase]: For 922028/922028 co-relation queries the response was YES. [2023-08-24 03:25:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292129 conditions, 17002 events. 9731/17002 cut-off events. For 922028/922028 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 138350 event pairs, 145 based on Foata normal form. 10/17012 useless extension candidates. Maximal degree in co-relation 291092. Up to 5589 conditions per place. [2023-08-24 03:25:37,286 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 974 selfloop transitions, 3644 changer transitions 0/4618 dead transitions. [2023-08-24 03:25:37,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 4618 transitions, 205096 flow [2023-08-24 03:25:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-24 03:25:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-24 03:25:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 4038 transitions. [2023-08-24 03:25:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40640096618357485 [2023-08-24 03:25:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 4038 transitions. [2023-08-24 03:25:37,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 4038 transitions. [2023-08-24 03:25:37,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:25:37,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 4038 transitions. [2023-08-24 03:25:37,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 56.083333333333336) internal successors, (4038), 72 states have internal predecessors, (4038), 0 states have call successors, (0), 0 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 03:25:37,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 138.0) internal successors, (10074), 73 states have internal predecessors, (10074), 0 states have call successors, (0), 0 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 03:25:37,299 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 138.0) internal successors, (10074), 73 states have internal predecessors, (10074), 0 states have call successors, (0), 0 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 03:25:37,299 INFO L175 Difference]: Start difference. First operand has 786 places, 4143 transitions, 180337 flow. Second operand 72 states and 4038 transitions. [2023-08-24 03:25:37,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 4618 transitions, 205096 flow [2023-08-24 03:26:12,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 841 places, 4618 transitions, 204143 flow, removed 402 selfloop flow, removed 16 redundant places. [2023-08-24 03:26:12,308 INFO L231 Difference]: Finished difference. Result has 847 places, 4445 transitions, 202719 flow [2023-08-24 03:26:12,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=179506, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=745, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=202719, PETRI_PLACES=847, PETRI_TRANSITIONS=4445} [2023-08-24 03:26:12,312 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 827 predicate places. [2023-08-24 03:26:12,312 INFO L495 AbstractCegarLoop]: Abstraction has has 847 places, 4445 transitions, 202719 flow [2023-08-24 03:26:12,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 53.857142857142854) internal successors, (1508), 28 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:26:12,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:26:12,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:26:12,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-24 03:26:12,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-24 03:26:12,518 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:26:12,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:26:12,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2039114821, now seen corresponding path program 34 times [2023-08-24 03:26:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:26:12,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680898781] [2023-08-24 03:26:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:26:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:26:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:26:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:26:12,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:26:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680898781] [2023-08-24 03:26:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680898781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:26:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719903131] [2023-08-24 03:26:12,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:26:12,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:26:12,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:26:12,674 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:26:12,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-24 03:26:12,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:26:12,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:26:12,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 03:26:12,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:26:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:26:12,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:26:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:26:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719903131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:26:13,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:26:13,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2023-08-24 03:26:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18708116] [2023-08-24 03:26:13,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:26:13,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 03:26:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:26:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 03:26:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-08-24 03:26:13,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:26:13,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 847 places, 4445 transitions, 202719 flow. Second operand has 24 states, 24 states have (on average 54.0) internal successors, (1296), 24 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 03:26:13,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:26:13,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:26:13,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:26:39,707 INFO L124 PetriNetUnfolderBase]: 11287/19702 cut-off events. [2023-08-24 03:26:39,707 INFO L125 PetriNetUnfolderBase]: For 1129100/1129100 co-relation queries the response was YES. [2023-08-24 03:26:39,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350746 conditions, 19702 events. 11287/19702 cut-off events. For 1129100/1129100 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 164183 event pairs, 83 based on Foata normal form. 94/19796 useless extension candidates. Maximal degree in co-relation 349394. Up to 5252 conditions per place. [2023-08-24 03:26:40,119 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1479 selfloop transitions, 3796 changer transitions 37/5312 dead transitions. [2023-08-24 03:26:40,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 5312 transitions, 248867 flow [2023-08-24 03:26:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 03:26:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 03:26:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2921 transitions. [2023-08-24 03:26:40,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40705128205128205 [2023-08-24 03:26:40,122 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2921 transitions. [2023-08-24 03:26:40,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2921 transitions. [2023-08-24 03:26:40,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:26:40,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2921 transitions. [2023-08-24 03:26:40,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 56.17307692307692) internal successors, (2921), 52 states have internal predecessors, (2921), 0 states have call successors, (0), 0 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 03:26:40,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 138.0) internal successors, (7314), 53 states have internal predecessors, (7314), 0 states have call successors, (0), 0 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 03:26:40,129 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 138.0) internal successors, (7314), 53 states have internal predecessors, (7314), 0 states have call successors, (0), 0 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 03:26:40,130 INFO L175 Difference]: Start difference. First operand has 847 places, 4445 transitions, 202719 flow. Second operand 52 states and 2921 transitions. [2023-08-24 03:26:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 5312 transitions, 248867 flow [2023-08-24 03:27:31,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 875 places, 5312 transitions, 243927 flow, removed 542 selfloop flow, removed 22 redundant places. [2023-08-24 03:27:31,663 INFO L231 Difference]: Finished difference. Result has 883 places, 5128 transitions, 240886 flow [2023-08-24 03:27:31,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=198097, PETRI_DIFFERENCE_MINUEND_PLACES=824, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=240886, PETRI_PLACES=883, PETRI_TRANSITIONS=5128} [2023-08-24 03:27:31,667 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 863 predicate places. [2023-08-24 03:27:31,667 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 5128 transitions, 240886 flow [2023-08-24 03:27:31,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 54.0) internal successors, (1296), 24 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 03:27:31,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:27:31,668 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:27:31,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-24 03:27:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-24 03:27:31,880 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:27:31,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:27:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1608639387, now seen corresponding path program 35 times [2023-08-24 03:27:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:27:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122324476] [2023-08-24 03:27:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:27:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:27:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:27:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:27:32,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:27:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122324476] [2023-08-24 03:27:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122324476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:27:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605649136] [2023-08-24 03:27:32,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:27:32,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:27:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:27:32,060 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:27:32,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-24 03:27:32,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 03:27:32,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:27:32,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:27:32,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:27:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:27:32,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:27:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:27:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605649136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:27:32,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:27:32,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-24 03:27:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542376656] [2023-08-24 03:27:32,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:27:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 03:27:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:27:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 03:27:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-08-24 03:27:32,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:27:32,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 5128 transitions, 240886 flow. Second operand has 29 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 03:27:32,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:27:32,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:27:32,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:28:05,224 INFO L124 PetriNetUnfolderBase]: 11918/20817 cut-off events. [2023-08-24 03:28:05,224 INFO L125 PetriNetUnfolderBase]: For 1305417/1305417 co-relation queries the response was YES. [2023-08-24 03:28:05,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379315 conditions, 20817 events. 11918/20817 cut-off events. For 1305417/1305417 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 175304 event pairs, 87 based on Foata normal form. 36/20853 useless extension candidates. Maximal degree in co-relation 377986. Up to 5346 conditions per place. [2023-08-24 03:28:05,623 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 759 selfloop transitions, 4731 changer transitions 59/5549 dead transitions. [2023-08-24 03:28:05,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 5549 transitions, 268195 flow [2023-08-24 03:28:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 03:28:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 03:28:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2918 transitions. [2023-08-24 03:28:05,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066332218506132 [2023-08-24 03:28:05,625 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2918 transitions. [2023-08-24 03:28:05,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2918 transitions. [2023-08-24 03:28:05,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:28:05,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2918 transitions. [2023-08-24 03:28:05,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 56.11538461538461) internal successors, (2918), 52 states have internal predecessors, (2918), 0 states have call successors, (0), 0 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 03:28:05,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 138.0) internal successors, (7314), 53 states have internal predecessors, (7314), 0 states have call successors, (0), 0 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 03:28:05,631 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 138.0) internal successors, (7314), 53 states have internal predecessors, (7314), 0 states have call successors, (0), 0 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 03:28:05,631 INFO L175 Difference]: Start difference. First operand has 883 places, 5128 transitions, 240886 flow. Second operand 52 states and 2918 transitions. [2023-08-24 03:28:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 5549 transitions, 268195 flow [2023-08-24 03:29:12,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 912 places, 5549 transitions, 266178 flow, removed 650 selfloop flow, removed 22 redundant places. [2023-08-24 03:29:12,941 INFO L231 Difference]: Finished difference. Result has 917 places, 5398 transitions, 263016 flow [2023-08-24 03:29:12,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=239065, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=263016, PETRI_PLACES=917, PETRI_TRANSITIONS=5398} [2023-08-24 03:29:12,945 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 897 predicate places. [2023-08-24 03:29:12,945 INFO L495 AbstractCegarLoop]: Abstraction has has 917 places, 5398 transitions, 263016 flow [2023-08-24 03:29:12,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 03:29:12,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:29:12,946 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:29:12,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-24 03:29:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:29:13,151 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:29:13,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:29:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash 715335657, now seen corresponding path program 36 times [2023-08-24 03:29:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:29:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293189150] [2023-08-24 03:29:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:29:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:29:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:29:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:29:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:29:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293189150] [2023-08-24 03:29:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293189150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:29:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685486023] [2023-08-24 03:29:13,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:29:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:29:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:29:13,315 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:29:13,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-24 03:29:13,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 03:29:13,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:29:13,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 03:29:13,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:29:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:29:13,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:29:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:29:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685486023] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:29:13,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:29:13,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-24 03:29:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283857852] [2023-08-24 03:29:13,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:29:13,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 03:29:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:29:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 03:29:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-08-24 03:29:13,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:29:13,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 917 places, 5398 transitions, 263016 flow. Second operand has 29 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 03:29:13,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:29:13,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:29:13,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:29:53,004 INFO L124 PetriNetUnfolderBase]: 12693/22230 cut-off events. [2023-08-24 03:29:53,004 INFO L125 PetriNetUnfolderBase]: For 1473542/1473542 co-relation queries the response was YES. [2023-08-24 03:29:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418710 conditions, 22230 events. 12693/22230 cut-off events. For 1473542/1473542 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 189765 event pairs, 225 based on Foata normal form. 22/22252 useless extension candidates. Maximal degree in co-relation 417348. Up to 7144 conditions per place. [2023-08-24 03:29:53,454 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1587 selfloop transitions, 4289 changer transitions 41/5917 dead transitions. [2023-08-24 03:29:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 5917 transitions, 295596 flow [2023-08-24 03:29:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 03:29:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 03:29:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3091 transitions. [2023-08-24 03:29:53,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072463768115942 [2023-08-24 03:29:53,456 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3091 transitions. [2023-08-24 03:29:53,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3091 transitions. [2023-08-24 03:29:53,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:29:53,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3091 transitions. [2023-08-24 03:29:53,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 56.2) internal successors, (3091), 55 states have internal predecessors, (3091), 0 states have call successors, (0), 0 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 03:29:53,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 138.0) internal successors, (7728), 56 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 03:29:53,464 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 138.0) internal successors, (7728), 56 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 03:29:53,464 INFO L175 Difference]: Start difference. First operand has 917 places, 5398 transitions, 263016 flow. Second operand 55 states and 3091 transitions. [2023-08-24 03:29:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 971 places, 5917 transitions, 295596 flow [2023-08-24 03:31:16,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 5917 transitions, 292969 flow, removed 641 selfloop flow, removed 26 redundant places. [2023-08-24 03:31:16,899 INFO L231 Difference]: Finished difference. Result has 954 places, 5759 transitions, 289645 flow [2023-08-24 03:31:16,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260385, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3888, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=289645, PETRI_PLACES=954, PETRI_TRANSITIONS=5759} [2023-08-24 03:31:16,903 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 934 predicate places. [2023-08-24 03:31:16,904 INFO L495 AbstractCegarLoop]: Abstraction has has 954 places, 5759 transitions, 289645 flow [2023-08-24 03:31:16,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 03:31:16,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:31:16,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:31:16,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-24 03:31:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-24 03:31:17,110 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 03:31:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:31:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash -840141052, now seen corresponding path program 37 times [2023-08-24 03:31:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:31:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346819268] [2023-08-24 03:31:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:31:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:31:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:31:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:31:17,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:31:17,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346819268] [2023-08-24 03:31:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346819268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:31:17,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843903458] [2023-08-24 03:31:17,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:31:17,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:31:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:31:17,269 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:31:17,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-24 03:31:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:31:17,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 03:31:17,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:31:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:31:17,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:31:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:31:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843903458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:31:17,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:31:17,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-08-24 03:31:17,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536908991] [2023-08-24 03:31:17,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:31:17,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 03:31:17,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:31:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 03:31:17,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-08-24 03:31:17,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 138 [2023-08-24 03:31:17,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 5759 transitions, 289645 flow. Second operand has 24 states, 24 states have (on average 53.791666666666664) internal successors, (1291), 24 states have internal predecessors, (1291), 0 states have call successors, (0), 0 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 03:31:17,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:31:17,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 138 [2023-08-24 03:31:17,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:32:04,276 INFO L124 PetriNetUnfolderBase]: 12882/22403 cut-off events. [2023-08-24 03:32:04,276 INFO L125 PetriNetUnfolderBase]: For 1577831/1577831 co-relation queries the response was YES. [2023-08-24 03:32:04,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433590 conditions, 22403 events. 12882/22403 cut-off events. For 1577831/1577831 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 189624 event pairs, 589 based on Foata normal form. 66/22469 useless extension candidates. Maximal degree in co-relation 432711. Up to 12082 conditions per place. [2023-08-24 03:32:04,808 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 1872 selfloop transitions, 4065 changer transitions 6/5943 dead transitions. [2023-08-24 03:32:04,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 5943 transitions, 308289 flow [2023-08-24 03:32:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-24 03:32:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-24 03:32:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2185 transitions. [2023-08-24 03:32:04,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405982905982906 [2023-08-24 03:32:04,810 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2185 transitions. [2023-08-24 03:32:04,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2185 transitions. [2023-08-24 03:32:04,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:32:04,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2185 transitions. [2023-08-24 03:32:04,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 56.02564102564103) internal successors, (2185), 39 states have internal predecessors, (2185), 0 states have call successors, (0), 0 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 03:32:04,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 138.0) internal successors, (5520), 40 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 03:32:04,814 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 138.0) internal successors, (5520), 40 states have internal predecessors, (5520), 0 states have call successors, (0), 0 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 03:32:04,814 INFO L175 Difference]: Start difference. First operand has 954 places, 5759 transitions, 289645 flow. Second operand 39 states and 2185 transitions. [2023-08-24 03:32:04,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 5943 transitions, 308289 flow Received shutdown request... [2023-08-24 03:33:32,520 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 03:33:32,520 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:33:32,685 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 03:33:32,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-24 03:33:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-24 03:33:32,889 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 03:33:32,890 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 03:33:32,890 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 03:33:32,890 INFO L445 BasicCegarLoop]: Path program histogram: [37, 2, 1] [2023-08-24 03:33:32,892 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 03:33:32,892 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 03:33:32,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 03:33:32 BasicIcfg [2023-08-24 03:33:32,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 03:33:32,895 INFO L158 Benchmark]: Toolchain (without parser) took 821444.55ms. Allocated memory was 367.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 343.9MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. [2023-08-24 03:33:32,895 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 344.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:33:32,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.39ms. Allocated memory is still 367.0MB. Free memory was 343.6MB in the beginning and 332.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 03:33:32,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.66ms. Allocated memory is still 367.0MB. Free memory was 332.9MB in the beginning and 331.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 03:33:32,897 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 367.0MB. Free memory was 331.5MB in the beginning and 330.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:33:32,897 INFO L158 Benchmark]: RCFGBuilder took 401.63ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 316.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 03:33:32,897 INFO L158 Benchmark]: TraceAbstraction took 820756.25ms. Allocated memory was 367.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 315.4MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. [2023-08-24 03:33:32,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 344.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 215.39ms. Allocated memory is still 367.0MB. Free memory was 343.6MB in the beginning and 332.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.66ms. Allocated memory is still 367.0MB. Free memory was 332.9MB in the beginning and 331.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 367.0MB. Free memory was 331.5MB in the beginning and 330.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 401.63ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 316.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 820756.25ms. Allocated memory was 367.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 315.4MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 68 PlacesBefore, 20 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 436 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 61 TotalNumberOfCompositions, 452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 446, independent: 444, independent conditional: 0, independent unconditional: 444, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 232, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 446, independent: 214, independent conditional: 0, independent unconditional: 214, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 232, unknown conditional: 0, unknown unconditional: 232] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, 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: 77]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 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: 820.7s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 791.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3332 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3332 mSDsluCounter, 656 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 465 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19305 IncrementalHoareTripleChecker+Invalid, 20222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 191 mSDtfsCounter, 19305 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3278 GetRequests, 1599 SyntacticMatches, 72 SemanticMatches, 1607 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26192 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289645occurred in iteration=39, InterpolantAutomatonStates: 1256, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 1399 NumberOfCodeBlocks, 1386 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 1956 ConstructedInterpolants, 0 QuantifiedInterpolants, 10317 SizeOfPredicates, 250 NumberOfNonLiveVariables, 4621 ConjunctsInSsa, 436 ConjunctsInUnsatCore, 115 InterpolantComputations, 3 PerfectInterpolantSequences, 281/1125 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