/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:05:41,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:05:41,343 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 [2023-08-27 00:05:41,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:05:41,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:05:41,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:05:41,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:05:41,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:05:41,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:05:41,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:05:41,392 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:05:41,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:05:41,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:05:41,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:05:41,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:05:41,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:05:41,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:05:41,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:05:41,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:05:41,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:05:41,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:05:41,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:05:41,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:05:41,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:05:41,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:05:41,398 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:05:41,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:05:41,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:05:41,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:05:41,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:05:41,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:05:41,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:05:41,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:05:41,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:05:41,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:05:41,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:05:41,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:05:41,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:05:41,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:05:41,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:05:41,795 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:05:41,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 00:05:43,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:05:43,354 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:05:43,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 00:05:43,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f3f8d0a/649d8343b1bf478c846be088b4e8c2c1/FLAGb999424eb [2023-08-27 00:05:43,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80f3f8d0a/649d8343b1bf478c846be088b4e8c2c1 [2023-08-27 00:05:43,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:05:43,386 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:05:43,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:05:43,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:05:43,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:05:43,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ced774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43, skipping insertion in model container [2023-08-27 00:05:43,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,418 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:05:43,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:05:43,621 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:05:43,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:05:43,676 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:05:43,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43 WrapperNode [2023-08-27 00:05:43,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:05:43,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:05:43,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:05:43,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:05:43,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,726 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-08-27 00:05:43,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:05:43,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:05:43,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:05:43,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:05:43,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:05:43,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:05:43,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:05:43,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:05:43,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (1/1) ... [2023-08-27 00:05:43,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:05:43,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:43,792 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) [2023-08-27 00:05:43,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 00:05:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:05:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:05:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:05:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:05:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:05:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:05:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:05:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:05:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:05:43,827 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:05:43,920 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:05:43,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:05:44,095 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:05:44,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:05:44,106 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 00:05:44,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:05:44 BoogieIcfgContainer [2023-08-27 00:05:44,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:05:44,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:05:44,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:05:44,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:05:44,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:05:43" (1/3) ... [2023-08-27 00:05:44,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7218f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:05:44, skipping insertion in model container [2023-08-27 00:05:44,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:05:43" (2/3) ... [2023-08-27 00:05:44,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7218f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:05:44, skipping insertion in model container [2023-08-27 00:05:44,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:05:44" (3/3) ... [2023-08-27 00:05:44,116 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-27 00:05:44,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:05:44,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 00:05:44,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:05:44,218 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 00:05:44,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 00:05:44,346 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-08-27 00:05:44,347 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:05:44,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 00:05:44,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 00:05:44,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2023-08-27 00:05:44,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:05:44,388 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 00:05:44,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 00:05:44,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 208 flow [2023-08-27 00:05:44,441 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-27 00:05:44,441 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:05:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 7/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 00:05:44,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-27 00:05:46,955 INFO L134 LiptonReduction]: Checked pairs total: 1467 [2023-08-27 00:05:46,956 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 00:05:46,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:05:46,974 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;@6fd43159, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:05:46,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 00:05:46,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:05:46,980 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-27 00:05:46,981 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:05:46,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:46,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:46,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:46,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash 895815217, now seen corresponding path program 1 times [2023-08-27 00:05:46,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:46,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077752365] [2023-08-27 00:05:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077752365] [2023-08-27 00:05:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077752365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:05:47,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:05:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:05:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250327936] [2023-08-27 00:05:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:05:47,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:05:47,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:05:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:05:47,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-08-27 00:05:47,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:47,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-08-27 00:05:47,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:47,735 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-08-27 00:05:47,735 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-27 00:05:47,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1597 event pairs, 39 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-08-27 00:05:47,741 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-27 00:05:47,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-27 00:05:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:05:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:05:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-27 00:05:47,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421052631578948 [2023-08-27 00:05:47,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-27 00:05:47,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-27 00:05:47,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:47,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-27 00:05:47,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,767 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 309 transitions. [2023-08-27 00:05:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-27 00:05:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:05:47,772 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-27 00:05:47,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-27 00:05:47,776 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-27 00:05:47,776 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-27 00:05:47,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:47,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:05:47,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:47,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1693606568, now seen corresponding path program 1 times [2023-08-27 00:05:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666467384] [2023-08-27 00:05:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:47,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666467384] [2023-08-27 00:05:47,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666467384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:05:47,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:05:47,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:05:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523810608] [2023-08-27 00:05:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:05:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:05:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:05:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:05:47,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:05:47,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:47,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:47,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:05:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:48,315 INFO L124 PetriNetUnfolderBase]: 597/900 cut-off events. [2023-08-27 00:05:48,315 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-08-27 00:05:48,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 900 events. 597/900 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3307 event pairs, 166 based on Foata normal form. 6/906 useless extension candidates. Maximal degree in co-relation 616. Up to 420 conditions per place. [2023-08-27 00:05:48,325 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 69 selfloop transitions, 8 changer transitions 3/80 dead transitions. [2023-08-27 00:05:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 80 transitions, 393 flow [2023-08-27 00:05:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:05:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:05:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 00:05:48,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 00:05:48,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 00:05:48,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 00:05:48,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:48,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 00:05:48,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:48,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:48,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:48,342 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 605 transitions. [2023-08-27 00:05:48,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 80 transitions, 393 flow [2023-08-27 00:05:48,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 80 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:05:48,346 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 141 flow [2023-08-27 00:05:48,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-27 00:05:48,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-27 00:05:48,347 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 141 flow [2023-08-27 00:05:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:05:48,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:48,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2015575896, now seen corresponding path program 2 times [2023-08-27 00:05:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677306313] [2023-08-27 00:05:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:48,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:48,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677306313] [2023-08-27 00:05:48,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677306313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:48,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488900295] [2023-08-27 00:05:48,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:05:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:48,565 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) [2023-08-27 00:05:48,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:05:48,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:05:48,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:48,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:05:48,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:48,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488900295] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:49,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:05:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-08-27 00:05:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406444909] [2023-08-27 00:05:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:05:49,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:05:49,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:05:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:05:49,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:05:49,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:49,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:05:49,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:49,535 INFO L124 PetriNetUnfolderBase]: 816/1236 cut-off events. [2023-08-27 00:05:49,536 INFO L125 PetriNetUnfolderBase]: For 1522/1577 co-relation queries the response was YES. [2023-08-27 00:05:49,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1236 events. 816/1236 cut-off events. For 1522/1577 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5169 event pairs, 172 based on Foata normal form. 6/1240 useless extension candidates. Maximal degree in co-relation 1784. Up to 398 conditions per place. [2023-08-27 00:05:49,546 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 96 selfloop transitions, 18 changer transitions 1/116 dead transitions. [2023-08-27 00:05:49,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 116 transitions, 708 flow [2023-08-27 00:05:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:05:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:05:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 743 transitions. [2023-08-27 00:05:49,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888157894736842 [2023-08-27 00:05:49,550 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 743 transitions. [2023-08-27 00:05:49,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 743 transitions. [2023-08-27 00:05:49,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:49,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 743 transitions. [2023-08-27 00:05:49,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.875) internal successors, (743), 8 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,556 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 141 flow. Second operand 8 states and 743 transitions. [2023-08-27 00:05:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 116 transitions, 708 flow [2023-08-27 00:05:49,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 116 transitions, 664 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-27 00:05:49,563 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2023-08-27 00:05:49,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-08-27 00:05:49,564 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-08-27 00:05:49,564 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2023-08-27 00:05:49,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:49,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:49,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:49,773 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 [2023-08-27 00:05:49,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:49,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash -504581648, now seen corresponding path program 3 times [2023-08-27 00:05:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712798193] [2023-08-27 00:05:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:49,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712798193] [2023-08-27 00:05:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712798193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:05:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:05:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:05:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103639331] [2023-08-27 00:05:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:05:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:05:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:05:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:05:49,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:05:49,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:49,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:05:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:50,188 INFO L124 PetriNetUnfolderBase]: 1018/1511 cut-off events. [2023-08-27 00:05:50,188 INFO L125 PetriNetUnfolderBase]: For 4489/4489 co-relation queries the response was YES. [2023-08-27 00:05:50,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 1511 events. 1018/1511 cut-off events. For 4489/4489 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5945 event pairs, 501 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 4481. Up to 1267 conditions per place. [2023-08-27 00:05:50,202 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 67 selfloop transitions, 22 changer transitions 4/93 dead transitions. [2023-08-27 00:05:50,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 93 transitions, 759 flow [2023-08-27 00:05:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:05:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:05:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 00:05:50,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 00:05:50,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 00:05:50,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 00:05:50,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:50,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 00:05:50,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 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) [2023-08-27 00:05:50,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:50,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:50,211 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 7 states and 592 transitions. [2023-08-27 00:05:50,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 93 transitions, 759 flow [2023-08-27 00:05:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 751 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 00:05:50,229 INFO L231 Difference]: Finished difference. Result has 57 places, 65 transitions, 518 flow [2023-08-27 00:05:50,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=57, PETRI_TRANSITIONS=65} [2023-08-27 00:05:50,230 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-27 00:05:50,231 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 65 transitions, 518 flow [2023-08-27 00:05:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:50,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:50,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:50,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:05:50,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:50,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:50,232 INFO L85 PathProgramCache]: Analyzing trace with hash 273786132, now seen corresponding path program 4 times [2023-08-27 00:05:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:50,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009436579] [2023-08-27 00:05:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:50,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009436579] [2023-08-27 00:05:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009436579] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:50,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955342083] [2023-08-27 00:05:50,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:05:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:50,442 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) [2023-08-27 00:05:50,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:05:50,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:05:50,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:50,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:05:50,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:50,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955342083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:51,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-08-27 00:05:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832541359] [2023-08-27 00:05:51,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:51,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:05:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:05:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:05:51,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:05:51,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 65 transitions, 518 flow. Second operand has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:51,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:51,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:05:51,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:52,328 INFO L124 PetriNetUnfolderBase]: 1574/2231 cut-off events. [2023-08-27 00:05:52,329 INFO L125 PetriNetUnfolderBase]: For 10230/10230 co-relation queries the response was YES. [2023-08-27 00:05:52,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10328 conditions, 2231 events. 1574/2231 cut-off events. For 10230/10230 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8821 event pairs, 422 based on Foata normal form. 36/2267 useless extension candidates. Maximal degree in co-relation 7505. Up to 1310 conditions per place. [2023-08-27 00:05:52,350 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 129 selfloop transitions, 106 changer transitions 0/235 dead transitions. [2023-08-27 00:05:52,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 235 transitions, 2151 flow [2023-08-27 00:05:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 00:05:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 00:05:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1692 transitions. [2023-08-27 00:05:52,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44526315789473686 [2023-08-27 00:05:52,356 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1692 transitions. [2023-08-27 00:05:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1692 transitions. [2023-08-27 00:05:52,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:52,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1692 transitions. [2023-08-27 00:05:52,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 84.6) internal successors, (1692), 20 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:52,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:52,369 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:52,369 INFO L175 Difference]: Start difference. First operand has 57 places, 65 transitions, 518 flow. Second operand 20 states and 1692 transitions. [2023-08-27 00:05:52,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 235 transitions, 2151 flow [2023-08-27 00:05:52,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 235 transitions, 2091 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-08-27 00:05:52,401 INFO L231 Difference]: Finished difference. Result has 88 places, 157 transitions, 1750 flow [2023-08-27 00:05:52,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1750, PETRI_PLACES=88, PETRI_TRANSITIONS=157} [2023-08-27 00:05:52,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-08-27 00:05:52,403 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 157 transitions, 1750 flow [2023-08-27 00:05:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:52,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:52,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:52,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:52,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:52,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:52,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1040607848, now seen corresponding path program 1 times [2023-08-27 00:05:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725673056] [2023-08-27 00:05:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725673056] [2023-08-27 00:05:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725673056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257978834] [2023-08-27 00:05:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:52,808 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) [2023-08-27 00:05:52,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:05:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:52,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:05:52,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:52,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257978834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:53,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 00:05:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454525545] [2023-08-27 00:05:53,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:05:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:05:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:05:53,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:05:53,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 157 transitions, 1750 flow. Second operand has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:53,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:53,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:05:53,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:54,290 INFO L124 PetriNetUnfolderBase]: 2039/2898 cut-off events. [2023-08-27 00:05:54,290 INFO L125 PetriNetUnfolderBase]: For 24940/24940 co-relation queries the response was YES. [2023-08-27 00:05:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17387 conditions, 2898 events. 2039/2898 cut-off events. For 24940/24940 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12331 event pairs, 356 based on Foata normal form. 22/2920 useless extension candidates. Maximal degree in co-relation 16487. Up to 1128 conditions per place. [2023-08-27 00:05:54,329 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 243 selfloop transitions, 82 changer transitions 2/327 dead transitions. [2023-08-27 00:05:54,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 327 transitions, 3995 flow [2023-08-27 00:05:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:05:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:05:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 00:05:54,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 00:05:54,333 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 00:05:54,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 00:05:54,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:54,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 00:05:54,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:54,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:54,340 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:54,340 INFO L175 Difference]: Start difference. First operand has 88 places, 157 transitions, 1750 flow. Second operand 10 states and 876 transitions. [2023-08-27 00:05:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 327 transitions, 3995 flow [2023-08-27 00:05:54,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 327 transitions, 3109 flow, removed 386 selfloop flow, removed 2 redundant places. [2023-08-27 00:05:54,453 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 1943 flow [2023-08-27 00:05:54,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=102, PETRI_TRANSITIONS=198} [2023-08-27 00:05:54,454 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2023-08-27 00:05:54,454 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 1943 flow [2023-08-27 00:05:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:54,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:54,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:54,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:54,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:54,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1484610118, now seen corresponding path program 5 times [2023-08-27 00:05:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:54,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264481409] [2023-08-27 00:05:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:54,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264481409] [2023-08-27 00:05:54,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264481409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138557715] [2023-08-27 00:05:54,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:05:54,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:54,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:54,881 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) [2023-08-27 00:05:54,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:05:54,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:05:54,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:54,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:05:54,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:55,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138557715] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:55,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 00:05:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371294932] [2023-08-27 00:05:55,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:55,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:05:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:05:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:05:55,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:05:55,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 198 transitions, 1943 flow. Second operand has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:55,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:55,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:05:55,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:56,371 INFO L124 PetriNetUnfolderBase]: 2873/4006 cut-off events. [2023-08-27 00:05:56,371 INFO L125 PetriNetUnfolderBase]: For 39163/39163 co-relation queries the response was YES. [2023-08-27 00:05:56,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 4006 events. 2873/4006 cut-off events. For 39163/39163 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17087 event pairs, 511 based on Foata normal form. 44/4050 useless extension candidates. Maximal degree in co-relation 23530. Up to 2545 conditions per place. [2023-08-27 00:05:56,415 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 239 selfloop transitions, 232 changer transitions 2/473 dead transitions. [2023-08-27 00:05:56,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 473 transitions, 5515 flow [2023-08-27 00:05:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 00:05:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 00:05:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1855 transitions. [2023-08-27 00:05:56,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437799043062201 [2023-08-27 00:05:56,421 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1855 transitions. [2023-08-27 00:05:56,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1855 transitions. [2023-08-27 00:05:56,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:56,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1855 transitions. [2023-08-27 00:05:56,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 84.31818181818181) internal successors, (1855), 22 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:56,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:56,432 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:56,432 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 1943 flow. Second operand 22 states and 1855 transitions. [2023-08-27 00:05:56,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 473 transitions, 5515 flow [2023-08-27 00:05:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 473 transitions, 5467 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-08-27 00:05:56,536 INFO L231 Difference]: Finished difference. Result has 134 places, 336 transitions, 4345 flow [2023-08-27 00:05:56,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4345, PETRI_PLACES=134, PETRI_TRANSITIONS=336} [2023-08-27 00:05:56,537 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2023-08-27 00:05:56,537 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 336 transitions, 4345 flow [2023-08-27 00:05:56,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:56,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:56,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:56,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:56,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:05:56,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1955701050, now seen corresponding path program 2 times [2023-08-27 00:05:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:56,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199480455] [2023-08-27 00:05:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:56,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199480455] [2023-08-27 00:05:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199480455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036846979] [2023-08-27 00:05:56,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:05:56,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:56,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:56,920 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) [2023-08-27 00:05:56,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:05:57,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:05:57,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:57,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:05:57,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:57,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:05:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036846979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:57,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2023-08-27 00:05:57,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927882309] [2023-08-27 00:05:57,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:57,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:05:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:05:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:05:57,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 00:05:57,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 336 transitions, 4345 flow. Second operand has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:57,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:57,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 00:05:57,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:00,382 INFO L124 PetriNetUnfolderBase]: 4618/6458 cut-off events. [2023-08-27 00:06:00,383 INFO L125 PetriNetUnfolderBase]: For 88664/88664 co-relation queries the response was YES. [2023-08-27 00:06:00,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45991 conditions, 6458 events. 4618/6458 cut-off events. For 88664/88664 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 30288 event pairs, 411 based on Foata normal form. 60/6518 useless extension candidates. Maximal degree in co-relation 44548. Up to 2398 conditions per place. [2023-08-27 00:06:00,462 INFO L140 encePairwiseOnDemand]: 179/190 looper letters, 406 selfloop transitions, 396 changer transitions 0/802 dead transitions. [2023-08-27 00:06:00,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 802 transitions, 11558 flow [2023-08-27 00:06:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 00:06:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 00:06:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2316 transitions. [2023-08-27 00:06:00,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43533834586466164 [2023-08-27 00:06:00,469 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2316 transitions. [2023-08-27 00:06:00,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2316 transitions. [2023-08-27 00:06:00,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:00,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2316 transitions. [2023-08-27 00:06:00,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.71428571428571) internal successors, (2316), 28 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,483 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,483 INFO L175 Difference]: Start difference. First operand has 134 places, 336 transitions, 4345 flow. Second operand 28 states and 2316 transitions. [2023-08-27 00:06:00,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 802 transitions, 11558 flow [2023-08-27 00:06:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 802 transitions, 10074 flow, removed 742 selfloop flow, removed 0 redundant places. [2023-08-27 00:06:01,056 INFO L231 Difference]: Finished difference. Result has 177 places, 578 transitions, 8096 flow [2023-08-27 00:06:01,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8096, PETRI_PLACES=177, PETRI_TRANSITIONS=578} [2023-08-27 00:06:01,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2023-08-27 00:06:01,057 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 578 transitions, 8096 flow [2023-08-27 00:06:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:01,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:01,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:01,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:01,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:01,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -417324130, now seen corresponding path program 6 times [2023-08-27 00:06:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:01,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066322045] [2023-08-27 00:06:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:01,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:01,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:01,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066322045] [2023-08-27 00:06:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066322045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:01,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516747105] [2023-08-27 00:06:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:01,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:01,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 578 transitions, 8096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:01,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:01,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:01,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:02,690 INFO L124 PetriNetUnfolderBase]: 4773/6735 cut-off events. [2023-08-27 00:06:02,690 INFO L125 PetriNetUnfolderBase]: For 106934/106934 co-relation queries the response was YES. [2023-08-27 00:06:02,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51817 conditions, 6735 events. 4773/6735 cut-off events. For 106934/106934 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 32381 event pairs, 294 based on Foata normal form. 34/6769 useless extension candidates. Maximal degree in co-relation 50971. Up to 2458 conditions per place. [2023-08-27 00:06:02,894 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 518 selfloop transitions, 318 changer transitions 2/838 dead transitions. [2023-08-27 00:06:02,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 838 transitions, 13808 flow [2023-08-27 00:06:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:06:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:06:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 868 transitions. [2023-08-27 00:06:02,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568421052631579 [2023-08-27 00:06:02,898 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 868 transitions. [2023-08-27 00:06:02,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 868 transitions. [2023-08-27 00:06:02,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:02,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 868 transitions. [2023-08-27 00:06:02,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.8) internal successors, (868), 10 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) [2023-08-27 00:06:02,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:02,903 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:02,904 INFO L175 Difference]: Start difference. First operand has 177 places, 578 transitions, 8096 flow. Second operand 10 states and 868 transitions. [2023-08-27 00:06:02,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 838 transitions, 13808 flow [2023-08-27 00:06:03,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 838 transitions, 12295 flow, removed 756 selfloop flow, removed 1 redundant places. [2023-08-27 00:06:03,543 INFO L231 Difference]: Finished difference. Result has 190 places, 640 transitions, 9224 flow [2023-08-27 00:06:03,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=7341, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9224, PETRI_PLACES=190, PETRI_TRANSITIONS=640} [2023-08-27 00:06:03,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-08-27 00:06:03,544 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 640 transitions, 9224 flow [2023-08-27 00:06:03,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:03,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:03,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:03,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:06:03,545 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:03,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1884392078, now seen corresponding path program 7 times [2023-08-27 00:06:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:03,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774262935] [2023-08-27 00:06:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774262935] [2023-08-27 00:06:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774262935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451479968] [2023-08-27 00:06:03,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:06:03,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:03,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:03,690 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) [2023-08-27 00:06:03,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:06:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:03,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:06:03,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:03,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451479968] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:06:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 00:06:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60154552] [2023-08-27 00:06:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:06:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:06:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:06:04,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:06:04,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 640 transitions, 9224 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:04,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:04,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:06:04,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:05,977 INFO L124 PetriNetUnfolderBase]: 5070/7231 cut-off events. [2023-08-27 00:06:05,978 INFO L125 PetriNetUnfolderBase]: For 105912/105948 co-relation queries the response was YES. [2023-08-27 00:06:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54677 conditions, 7231 events. 5070/7231 cut-off events. For 105912/105948 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36169 event pairs, 531 based on Foata normal form. 38/7260 useless extension candidates. Maximal degree in co-relation 53612. Up to 2413 conditions per place. [2023-08-27 00:06:06,066 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 500 selfloop transitions, 260 changer transitions 0/771 dead transitions. [2023-08-27 00:06:06,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 771 transitions, 12310 flow [2023-08-27 00:06:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:06:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:06:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 741 transitions. [2023-08-27 00:06:06,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-27 00:06:06,069 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 741 transitions. [2023-08-27 00:06:06,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 741 transitions. [2023-08-27 00:06:06,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:06,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 741 transitions. [2023-08-27 00:06:06,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:06,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:06,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:06,073 INFO L175 Difference]: Start difference. First operand has 190 places, 640 transitions, 9224 flow. Second operand 8 states and 741 transitions. [2023-08-27 00:06:06,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 771 transitions, 12310 flow [2023-08-27 00:06:06,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 771 transitions, 12042 flow, removed 134 selfloop flow, removed 0 redundant places. [2023-08-27 00:06:06,693 INFO L231 Difference]: Finished difference. Result has 202 places, 670 transitions, 10428 flow [2023-08-27 00:06:06,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10428, PETRI_PLACES=202, PETRI_TRANSITIONS=670} [2023-08-27 00:06:06,694 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2023-08-27 00:06:06,694 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 670 transitions, 10428 flow [2023-08-27 00:06:06,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:06,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:06,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:06,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:06,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:06,896 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:06,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1392557114, now seen corresponding path program 8 times [2023-08-27 00:06:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:06,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054098984] [2023-08-27 00:06:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:06,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054098984] [2023-08-27 00:06:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054098984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870242701] [2023-08-27 00:06:07,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:06:07,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:07,050 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) [2023-08-27 00:06:07,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:06:07,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:06:07,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:07,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:06:07,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:07,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870242701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:06:07,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:06:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 00:06:07,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514861666] [2023-08-27 00:06:07,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:06:07,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:06:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:06:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:06:07,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:07,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 670 transitions, 10428 flow. Second operand has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:07,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:09,255 INFO L124 PetriNetUnfolderBase]: 5355/7765 cut-off events. [2023-08-27 00:06:09,256 INFO L125 PetriNetUnfolderBase]: For 120161/120161 co-relation queries the response was YES. [2023-08-27 00:06:09,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60196 conditions, 7765 events. 5355/7765 cut-off events. For 120161/120161 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40517 event pairs, 576 based on Foata normal form. 20/7785 useless extension candidates. Maximal degree in co-relation 59284. Up to 3056 conditions per place. [2023-08-27 00:06:09,390 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 489 selfloop transitions, 340 changer transitions 2/831 dead transitions. [2023-08-27 00:06:09,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 831 transitions, 14387 flow [2023-08-27 00:06:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:06:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:06:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 872 transitions. [2023-08-27 00:06:09,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589473684210526 [2023-08-27 00:06:09,396 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 872 transitions. [2023-08-27 00:06:09,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 872 transitions. [2023-08-27 00:06:09,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:09,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 872 transitions. [2023-08-27 00:06:09,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:09,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:09,400 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:09,400 INFO L175 Difference]: Start difference. First operand has 202 places, 670 transitions, 10428 flow. Second operand 10 states and 872 transitions. [2023-08-27 00:06:09,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 831 transitions, 14387 flow [2023-08-27 00:06:10,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 831 transitions, 14240 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:10,105 INFO L231 Difference]: Finished difference. Result has 215 places, 722 transitions, 12523 flow [2023-08-27 00:06:10,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=10258, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12523, PETRI_PLACES=215, PETRI_TRANSITIONS=722} [2023-08-27 00:06:10,106 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2023-08-27 00:06:10,106 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 722 transitions, 12523 flow [2023-08-27 00:06:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:10,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:10,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:10,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:10,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:10,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:10,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -921041164, now seen corresponding path program 3 times [2023-08-27 00:06:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:10,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798539505] [2023-08-27 00:06:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:10,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798539505] [2023-08-27 00:06:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798539505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139347249] [2023-08-27 00:06:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:10,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:10,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:10,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 722 transitions, 12523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:10,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:10,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:10,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:12,545 INFO L124 PetriNetUnfolderBase]: 5715/8325 cut-off events. [2023-08-27 00:06:12,545 INFO L125 PetriNetUnfolderBase]: For 146028/146028 co-relation queries the response was YES. [2023-08-27 00:06:12,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66718 conditions, 8325 events. 5715/8325 cut-off events. For 146028/146028 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44536 event pairs, 488 based on Foata normal form. 40/8365 useless extension candidates. Maximal degree in co-relation 66196. Up to 2838 conditions per place. [2023-08-27 00:06:12,610 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 497 selfloop transitions, 369 changer transitions 0/866 dead transitions. [2023-08-27 00:06:12,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 866 transitions, 15988 flow [2023-08-27 00:06:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:06:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:06:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 00:06:12,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 00:06:12,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 00:06:12,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 00:06:12,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:12,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 00:06:12,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:12,620 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:12,620 INFO L175 Difference]: Start difference. First operand has 215 places, 722 transitions, 12523 flow. Second operand 10 states and 876 transitions. [2023-08-27 00:06:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 866 transitions, 15988 flow [2023-08-27 00:06:13,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 866 transitions, 15760 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:13,399 INFO L231 Difference]: Finished difference. Result has 227 places, 754 transitions, 14033 flow [2023-08-27 00:06:13,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=12297, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14033, PETRI_PLACES=227, PETRI_TRANSITIONS=754} [2023-08-27 00:06:13,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2023-08-27 00:06:13,400 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 754 transitions, 14033 flow [2023-08-27 00:06:13,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:13,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:13,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:06:13,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:13,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:13,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1775767970, now seen corresponding path program 9 times [2023-08-27 00:06:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504625559] [2023-08-27 00:06:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504625559] [2023-08-27 00:06:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504625559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371314816] [2023-08-27 00:06:13,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:06:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:13,593 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) [2023-08-27 00:06:13,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:06:13,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:06:13,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:13,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:06:13,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:13,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:13,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371314816] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:13,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:06:13,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 00:06:13,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063357489] [2023-08-27 00:06:13,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:13,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:06:13,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:06:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:06:13,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:06:13,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 754 transitions, 14033 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:13,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:13,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:06:13,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:15,842 INFO L124 PetriNetUnfolderBase]: 5693/8308 cut-off events. [2023-08-27 00:06:15,843 INFO L125 PetriNetUnfolderBase]: For 170226/170294 co-relation queries the response was YES. [2023-08-27 00:06:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69723 conditions, 8308 events. 5693/8308 cut-off events. For 170226/170294 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44661 event pairs, 848 based on Foata normal form. 59/8349 useless extension candidates. Maximal degree in co-relation 69173. Up to 4710 conditions per place. [2023-08-27 00:06:15,914 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 133 changer transitions 0/827 dead transitions. [2023-08-27 00:06:15,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 827 transitions, 16434 flow [2023-08-27 00:06:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:06:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:06:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 00:06:15,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 00:06:15,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 00:06:15,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 00:06:15,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:15,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 00:06:15,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:15,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:15,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:15,919 INFO L175 Difference]: Start difference. First operand has 227 places, 754 transitions, 14033 flow. Second operand 6 states and 548 transitions. [2023-08-27 00:06:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 827 transitions, 16434 flow [2023-08-27 00:06:16,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 827 transitions, 16174 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:16,904 INFO L231 Difference]: Finished difference. Result has 232 places, 760 transitions, 14222 flow [2023-08-27 00:06:16,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=13777, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14222, PETRI_PLACES=232, PETRI_TRANSITIONS=760} [2023-08-27 00:06:16,905 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2023-08-27 00:06:16,906 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 760 transitions, 14222 flow [2023-08-27 00:06:16,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:16,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:16,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:16,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 00:06:17,109 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,SelfDestructingSolverStorable12 [2023-08-27 00:06:17,109 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1990970944, now seen corresponding path program 10 times [2023-08-27 00:06:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602968915] [2023-08-27 00:06:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602968915] [2023-08-27 00:06:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602968915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293463861] [2023-08-27 00:06:17,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:06:17,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:17,249 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) [2023-08-27 00:06:17,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:06:17,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:06:17,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:17,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:06:17,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:17,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:17,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293463861] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:17,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:06:17,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 00:06:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181164254] [2023-08-27 00:06:17,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:06:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:06:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:06:17,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:06:17,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 760 transitions, 14222 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:17,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:17,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:06:17,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:19,547 INFO L124 PetriNetUnfolderBase]: 5715/8354 cut-off events. [2023-08-27 00:06:19,547 INFO L125 PetriNetUnfolderBase]: For 170142/170210 co-relation queries the response was YES. [2023-08-27 00:06:19,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70868 conditions, 8354 events. 5715/8354 cut-off events. For 170142/170210 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 45115 event pairs, 860 based on Foata normal form. 73/8409 useless extension candidates. Maximal degree in co-relation 70423. Up to 4678 conditions per place. [2023-08-27 00:06:19,615 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 677 selfloop transitions, 139 changer transitions 0/834 dead transitions. [2023-08-27 00:06:19,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 834 transitions, 16648 flow [2023-08-27 00:06:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:06:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:06:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 00:06:19,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 00:06:19,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 00:06:19,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 00:06:19,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:19,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 00:06:19,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:19,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:19,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:19,619 INFO L175 Difference]: Start difference. First operand has 232 places, 760 transitions, 14222 flow. Second operand 6 states and 550 transitions. [2023-08-27 00:06:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 834 transitions, 16648 flow [2023-08-27 00:06:20,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 834 transitions, 16443 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:20,470 INFO L231 Difference]: Finished difference. Result has 236 places, 763 transitions, 14391 flow [2023-08-27 00:06:20,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14017, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14391, PETRI_PLACES=236, PETRI_TRANSITIONS=763} [2023-08-27 00:06:20,471 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2023-08-27 00:06:20,472 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 763 transitions, 14391 flow [2023-08-27 00:06:20,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:20,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:20,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:20,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 00:06:20,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 00:06:20,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:20,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1763514998, now seen corresponding path program 11 times [2023-08-27 00:06:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482589784] [2023-08-27 00:06:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482589784] [2023-08-27 00:06:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482589784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305216309] [2023-08-27 00:06:20,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:06:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:20,875 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) [2023-08-27 00:06:20,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:06:20,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:06:20,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:20,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:06:20,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:21,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305216309] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:06:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 00:06:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469475148] [2023-08-27 00:06:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:06:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:06:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:06:21,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:06:21,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 763 transitions, 14391 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:21,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:21,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:06:21,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:23,076 INFO L124 PetriNetUnfolderBase]: 5679/8298 cut-off events. [2023-08-27 00:06:23,077 INFO L125 PetriNetUnfolderBase]: For 171751/171819 co-relation queries the response was YES. [2023-08-27 00:06:23,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70685 conditions, 8298 events. 5679/8298 cut-off events. For 171751/171819 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 44774 event pairs, 866 based on Foata normal form. 73/8353 useless extension candidates. Maximal degree in co-relation 70239. Up to 4343 conditions per place. [2023-08-27 00:06:23,157 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 665 selfloop transitions, 163 changer transitions 0/846 dead transitions. [2023-08-27 00:06:23,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 846 transitions, 17028 flow [2023-08-27 00:06:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:06:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:06:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 00:06:23,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 00:06:23,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 00:06:23,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 00:06:23,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:23,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 00:06:23,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:23,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:23,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:23,160 INFO L175 Difference]: Start difference. First operand has 236 places, 763 transitions, 14391 flow. Second operand 6 states and 550 transitions. [2023-08-27 00:06:23,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 846 transitions, 17028 flow [2023-08-27 00:06:24,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 846 transitions, 16876 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:24,195 INFO L231 Difference]: Finished difference. Result has 241 places, 770 transitions, 14835 flow [2023-08-27 00:06:24,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14244, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14835, PETRI_PLACES=241, PETRI_TRANSITIONS=770} [2023-08-27 00:06:24,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2023-08-27 00:06:24,197 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 770 transitions, 14835 flow [2023-08-27 00:06:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:24,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:24,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:24,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:24,402 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,SelfDestructingSolverStorable14 [2023-08-27 00:06:24,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:24,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash 402350888, now seen corresponding path program 4 times [2023-08-27 00:06:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266158384] [2023-08-27 00:06:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266158384] [2023-08-27 00:06:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266158384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:24,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001438568] [2023-08-27 00:06:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:24,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:24,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:24,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 770 transitions, 14835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:24,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:24,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:24,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:26,546 INFO L124 PetriNetUnfolderBase]: 5900/8643 cut-off events. [2023-08-27 00:06:26,547 INFO L125 PetriNetUnfolderBase]: For 183331/183331 co-relation queries the response was YES. [2023-08-27 00:06:26,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74878 conditions, 8643 events. 5900/8643 cut-off events. For 183331/183331 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 47045 event pairs, 985 based on Foata normal form. 28/8671 useless extension candidates. Maximal degree in co-relation 74402. Up to 5431 conditions per place. [2023-08-27 00:06:26,622 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 713 selfloop transitions, 169 changer transitions 10/892 dead transitions. [2023-08-27 00:06:26,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 892 transitions, 18154 flow [2023-08-27 00:06:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 00:06:26,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 00:06:26,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 00:06:26,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 00:06:26,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:26,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 00:06:26,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:26,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:26,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:26,626 INFO L175 Difference]: Start difference. First operand has 241 places, 770 transitions, 14835 flow. Second operand 7 states and 609 transitions. [2023-08-27 00:06:26,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 892 transitions, 18154 flow [2023-08-27 00:06:27,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 892 transitions, 17865 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-27 00:06:27,717 INFO L231 Difference]: Finished difference. Result has 249 places, 788 transitions, 15455 flow [2023-08-27 00:06:27,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14546, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15455, PETRI_PLACES=249, PETRI_TRANSITIONS=788} [2023-08-27 00:06:27,717 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2023-08-27 00:06:27,718 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 788 transitions, 15455 flow [2023-08-27 00:06:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:27,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:27,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 00:06:27,718 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:27,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash 615746262, now seen corresponding path program 12 times [2023-08-27 00:06:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:27,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932794349] [2023-08-27 00:06:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:27,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:27,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932794349] [2023-08-27 00:06:27,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932794349] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:27,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128253614] [2023-08-27 00:06:27,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:06:27,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:27,901 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) [2023-08-27 00:06:27,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:06:28,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 00:06:28,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:28,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:06:28,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:28,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128253614] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:28,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:06:28,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2023-08-27 00:06:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043669401] [2023-08-27 00:06:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:06:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:06:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:06:28,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:06:28,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 788 transitions, 15455 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:28,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:28,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:06:28,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:30,249 INFO L124 PetriNetUnfolderBase]: 5793/8450 cut-off events. [2023-08-27 00:06:30,249 INFO L125 PetriNetUnfolderBase]: For 187797/187865 co-relation queries the response was YES. [2023-08-27 00:06:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74285 conditions, 8450 events. 5793/8450 cut-off events. For 187797/187865 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 45662 event pairs, 884 based on Foata normal form. 59/8491 useless extension candidates. Maximal degree in co-relation 73811. Up to 4217 conditions per place. [2023-08-27 00:06:30,369 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 166 changer transitions 0/860 dead transitions. [2023-08-27 00:06:30,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 860 transitions, 17908 flow [2023-08-27 00:06:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:06:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:06:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 00:06:30,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 00:06:30,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 00:06:30,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 00:06:30,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:30,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 00:06:30,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:30,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:30,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:30,372 INFO L175 Difference]: Start difference. First operand has 249 places, 788 transitions, 15455 flow. Second operand 6 states and 548 transitions. [2023-08-27 00:06:30,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 860 transitions, 17908 flow [2023-08-27 00:06:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 860 transitions, 17634 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-27 00:06:31,673 INFO L231 Difference]: Finished difference. Result has 251 places, 788 transitions, 15523 flow [2023-08-27 00:06:31,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15181, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15523, PETRI_PLACES=251, PETRI_TRANSITIONS=788} [2023-08-27 00:06:31,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2023-08-27 00:06:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 788 transitions, 15523 flow [2023-08-27 00:06:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:31,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:31,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:31,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 00:06:31,881 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,SelfDestructingSolverStorable16 [2023-08-27 00:06:31,881 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:31,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1797543740, now seen corresponding path program 5 times [2023-08-27 00:06:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:31,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680235345] [2023-08-27 00:06:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:31,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:32,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:32,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680235345] [2023-08-27 00:06:32,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680235345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:32,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:32,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:32,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907014851] [2023-08-27 00:06:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:32,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:32,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:32,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 788 transitions, 15523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:32,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:32,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:34,291 INFO L124 PetriNetUnfolderBase]: 6225/9164 cut-off events. [2023-08-27 00:06:34,291 INFO L125 PetriNetUnfolderBase]: For 205281/205281 co-relation queries the response was YES. [2023-08-27 00:06:34,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80010 conditions, 9164 events. 6225/9164 cut-off events. For 205281/205281 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 50899 event pairs, 1292 based on Foata normal form. 56/9220 useless extension candidates. Maximal degree in co-relation 79522. Up to 7636 conditions per place. [2023-08-27 00:06:34,386 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 706 selfloop transitions, 193 changer transitions 10/909 dead transitions. [2023-08-27 00:06:34,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 909 transitions, 19164 flow [2023-08-27 00:06:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 00:06:34,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 00:06:34,387 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 00:06:34,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 00:06:34,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:34,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 00:06:34,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:34,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:34,389 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:34,389 INFO L175 Difference]: Start difference. First operand has 251 places, 788 transitions, 15523 flow. Second operand 7 states and 600 transitions. [2023-08-27 00:06:34,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 909 transitions, 19164 flow [2023-08-27 00:06:35,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 909 transitions, 18985 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 00:06:35,655 INFO L231 Difference]: Finished difference. Result has 259 places, 832 transitions, 17034 flow [2023-08-27 00:06:35,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15344, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17034, PETRI_PLACES=259, PETRI_TRANSITIONS=832} [2023-08-27 00:06:35,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2023-08-27 00:06:35,656 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 832 transitions, 17034 flow [2023-08-27 00:06:35,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:35,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:35,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:35,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:06:35,657 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:35,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:35,657 INFO L85 PathProgramCache]: Analyzing trace with hash 841650270, now seen corresponding path program 6 times [2023-08-27 00:06:35,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541628494] [2023-08-27 00:06:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541628494] [2023-08-27 00:06:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541628494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:35,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157740133] [2023-08-27 00:06:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:35,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:35,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 832 transitions, 17034 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:35,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:35,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:35,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:38,182 INFO L124 PetriNetUnfolderBase]: 6311/9358 cut-off events. [2023-08-27 00:06:38,182 INFO L125 PetriNetUnfolderBase]: For 213905/213905 co-relation queries the response was YES. [2023-08-27 00:06:38,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84251 conditions, 9358 events. 6311/9358 cut-off events. For 213905/213905 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 52841 event pairs, 1411 based on Foata normal form. 36/9394 useless extension candidates. Maximal degree in co-relation 83710. Up to 8204 conditions per place. [2023-08-27 00:06:38,279 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 723 selfloop transitions, 186 changer transitions 9/918 dead transitions. [2023-08-27 00:06:38,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 918 transitions, 20121 flow [2023-08-27 00:06:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2023-08-27 00:06:38,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481203007518797 [2023-08-27 00:06:38,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2023-08-27 00:06:38,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2023-08-27 00:06:38,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:38,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2023-08-27 00:06:38,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:38,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:38,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:38,284 INFO L175 Difference]: Start difference. First operand has 259 places, 832 transitions, 17034 flow. Second operand 7 states and 596 transitions. [2023-08-27 00:06:38,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 918 transitions, 20121 flow [2023-08-27 00:06:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 918 transitions, 19877 flow, removed 122 selfloop flow, removed 1 redundant places. [2023-08-27 00:06:39,870 INFO L231 Difference]: Finished difference. Result has 265 places, 849 transitions, 17677 flow [2023-08-27 00:06:39,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=16794, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17677, PETRI_PLACES=265, PETRI_TRANSITIONS=849} [2023-08-27 00:06:39,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2023-08-27 00:06:39,871 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 849 transitions, 17677 flow [2023-08-27 00:06:39,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:39,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:39,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:39,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 00:06:39,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:39,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash 42335346, now seen corresponding path program 7 times [2023-08-27 00:06:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647405035] [2023-08-27 00:06:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647405035] [2023-08-27 00:06:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647405035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:39,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:39,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:39,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751244170] [2023-08-27 00:06:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:39,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 849 transitions, 17677 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:39,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:42,654 INFO L124 PetriNetUnfolderBase]: 6318/9371 cut-off events. [2023-08-27 00:06:42,655 INFO L125 PetriNetUnfolderBase]: For 212713/212713 co-relation queries the response was YES. [2023-08-27 00:06:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84442 conditions, 9371 events. 6318/9371 cut-off events. For 212713/212713 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 52883 event pairs, 1061 based on Foata normal form. 18/9389 useless extension candidates. Maximal degree in co-relation 83998. Up to 5389 conditions per place. [2023-08-27 00:06:42,766 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 728 selfloop transitions, 209 changer transitions 0/937 dead transitions. [2023-08-27 00:06:42,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 937 transitions, 20518 flow [2023-08-27 00:06:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 00:06:42,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 00:06:42,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 00:06:42,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 00:06:42,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:42,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 00:06:42,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:42,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:42,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:42,772 INFO L175 Difference]: Start difference. First operand has 265 places, 849 transitions, 17677 flow. Second operand 7 states and 609 transitions. [2023-08-27 00:06:42,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 937 transitions, 20518 flow [2023-08-27 00:06:44,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 937 transitions, 20034 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-08-27 00:06:44,292 INFO L231 Difference]: Finished difference. Result has 268 places, 860 transitions, 17930 flow [2023-08-27 00:06:44,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17930, PETRI_PLACES=268, PETRI_TRANSITIONS=860} [2023-08-27 00:06:44,293 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2023-08-27 00:06:44,294 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 860 transitions, 17930 flow [2023-08-27 00:06:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:44,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:44,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 00:06:44,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:44,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1944771611, now seen corresponding path program 1 times [2023-08-27 00:06:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958029838] [2023-08-27 00:06:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958029838] [2023-08-27 00:06:44,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958029838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:44,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:44,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690117749] [2023-08-27 00:06:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:44,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:44,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 860 transitions, 17930 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:44,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:44,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:47,107 INFO L124 PetriNetUnfolderBase]: 6324/9416 cut-off events. [2023-08-27 00:06:47,108 INFO L125 PetriNetUnfolderBase]: For 217853/217853 co-relation queries the response was YES. [2023-08-27 00:06:47,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84978 conditions, 9416 events. 6324/9416 cut-off events. For 217853/217853 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 53586 event pairs, 1149 based on Foata normal form. 24/9440 useless extension candidates. Maximal degree in co-relation 84495. Up to 5389 conditions per place. [2023-08-27 00:06:47,203 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 758 selfloop transitions, 162 changer transitions 18/938 dead transitions. [2023-08-27 00:06:47,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 938 transitions, 20547 flow [2023-08-27 00:06:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2023-08-27 00:06:47,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45939849624060153 [2023-08-27 00:06:47,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2023-08-27 00:06:47,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2023-08-27 00:06:47,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:47,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2023-08-27 00:06:47,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:47,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:47,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:47,206 INFO L175 Difference]: Start difference. First operand has 268 places, 860 transitions, 17930 flow. Second operand 7 states and 611 transitions. [2023-08-27 00:06:47,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 938 transitions, 20547 flow [2023-08-27 00:06:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 938 transitions, 20113 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-27 00:06:48,651 INFO L231 Difference]: Finished difference. Result has 272 places, 857 transitions, 17771 flow [2023-08-27 00:06:48,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17500, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17771, PETRI_PLACES=272, PETRI_TRANSITIONS=857} [2023-08-27 00:06:48,652 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2023-08-27 00:06:48,652 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 857 transitions, 17771 flow [2023-08-27 00:06:48,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:48,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:48,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:48,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 00:06:48,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:48,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash 697226670, now seen corresponding path program 13 times [2023-08-27 00:06:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087582681] [2023-08-27 00:06:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087582681] [2023-08-27 00:06:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087582681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406631705] [2023-08-27 00:06:48,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:06:48,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:48,777 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) [2023-08-27 00:06:48,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:06:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:48,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:06:48,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:49,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406631705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:06:49,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:06:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-08-27 00:06:49,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237987148] [2023-08-27 00:06:49,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:06:49,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:06:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:06:49,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:06:49,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:49,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 857 transitions, 17771 flow. Second operand has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:49,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:49,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:49,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:53,059 INFO L124 PetriNetUnfolderBase]: 7725/11238 cut-off events. [2023-08-27 00:06:53,059 INFO L125 PetriNetUnfolderBase]: For 266539/266539 co-relation queries the response was YES. [2023-08-27 00:06:53,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102554 conditions, 11238 events. 7725/11238 cut-off events. For 266539/266539 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 63374 event pairs, 1276 based on Foata normal form. 26/11264 useless extension candidates. Maximal degree in co-relation 102215. Up to 8823 conditions per place. [2023-08-27 00:06:53,179 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 873 selfloop transitions, 431 changer transitions 0/1304 dead transitions. [2023-08-27 00:06:53,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1304 transitions, 27860 flow [2023-08-27 00:06:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:06:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:06:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1783 transitions. [2023-08-27 00:06:53,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468671679197995 [2023-08-27 00:06:53,182 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1783 transitions. [2023-08-27 00:06:53,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1783 transitions. [2023-08-27 00:06:53,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:53,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1783 transitions. [2023-08-27 00:06:53,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.9047619047619) internal successors, (1783), 21 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:53,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:53,187 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:53,187 INFO L175 Difference]: Start difference. First operand has 272 places, 857 transitions, 17771 flow. Second operand 21 states and 1783 transitions. [2023-08-27 00:06:53,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1304 transitions, 27860 flow [2023-08-27 00:06:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1304 transitions, 27504 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 00:06:54,980 INFO L231 Difference]: Finished difference. Result has 294 places, 1087 transitions, 23630 flow [2023-08-27 00:06:54,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17437, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=23630, PETRI_PLACES=294, PETRI_TRANSITIONS=1087} [2023-08-27 00:06:54,981 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2023-08-27 00:06:54,982 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 1087 transitions, 23630 flow [2023-08-27 00:06:54,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:54,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:54,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:54,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:55,182 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,SelfDestructingSolverStorable21 [2023-08-27 00:06:55,183 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:06:55,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1256816458, now seen corresponding path program 14 times [2023-08-27 00:06:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789029651] [2023-08-27 00:06:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:55,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:55,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789029651] [2023-08-27 00:06:55,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789029651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:06:55,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:06:55,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:06:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020272020] [2023-08-27 00:06:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:06:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:06:55,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:06:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:06:55,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:06:55,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1087 transitions, 23630 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:55,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:55,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:06:55,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:58,618 INFO L124 PetriNetUnfolderBase]: 7765/11310 cut-off events. [2023-08-27 00:06:58,619 INFO L125 PetriNetUnfolderBase]: For 288151/288151 co-relation queries the response was YES. [2023-08-27 00:06:58,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107786 conditions, 11310 events. 7765/11310 cut-off events. For 288151/288151 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63782 event pairs, 1525 based on Foata normal form. 16/11326 useless extension candidates. Maximal degree in co-relation 107315. Up to 9886 conditions per place. [2023-08-27 00:06:58,743 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 918 selfloop transitions, 232 changer transitions 0/1150 dead transitions. [2023-08-27 00:06:58,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1150 transitions, 26712 flow [2023-08-27 00:06:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:06:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:06:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 00:06:58,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 00:06:58,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 00:06:58,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 00:06:58,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:58,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 00:06:58,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:58,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:58,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:58,746 INFO L175 Difference]: Start difference. First operand has 294 places, 1087 transitions, 23630 flow. Second operand 7 states and 607 transitions. [2023-08-27 00:06:58,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1150 transitions, 26712 flow [2023-08-27 00:07:01,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1150 transitions, 25702 flow, removed 411 selfloop flow, removed 2 redundant places. [2023-08-27 00:07:01,161 INFO L231 Difference]: Finished difference. Result has 299 places, 1091 transitions, 23229 flow [2023-08-27 00:07:01,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22620, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23229, PETRI_PLACES=299, PETRI_TRANSITIONS=1091} [2023-08-27 00:07:01,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2023-08-27 00:07:01,163 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 1091 transitions, 23229 flow [2023-08-27 00:07:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:01,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:01,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:01,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 00:07:01,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:01,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1871647724, now seen corresponding path program 15 times [2023-08-27 00:07:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:01,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772255134] [2023-08-27 00:07:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:01,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:01,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:01,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772255134] [2023-08-27 00:07:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772255134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:01,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:01,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:01,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774518987] [2023-08-27 00:07:01,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:01,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:01,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:01,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1091 transitions, 23229 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:01,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:01,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:01,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:04,746 INFO L124 PetriNetUnfolderBase]: 7766/11313 cut-off events. [2023-08-27 00:07:04,746 INFO L125 PetriNetUnfolderBase]: For 280295/280295 co-relation queries the response was YES. [2023-08-27 00:07:04,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105467 conditions, 11313 events. 7766/11313 cut-off events. For 280295/280295 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63795 event pairs, 1590 based on Foata normal form. 2/11315 useless extension candidates. Maximal degree in co-relation 104995. Up to 10314 conditions per place. [2023-08-27 00:07:04,862 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 917 selfloop transitions, 203 changer transitions 3/1123 dead transitions. [2023-08-27 00:07:04,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1123 transitions, 25865 flow [2023-08-27 00:07:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 00:07:04,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 00:07:04,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 00:07:04,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 00:07:04,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:04,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 00:07:04,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,866 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,866 INFO L175 Difference]: Start difference. First operand has 299 places, 1091 transitions, 23229 flow. Second operand 7 states and 590 transitions. [2023-08-27 00:07:04,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1123 transitions, 25865 flow [2023-08-27 00:07:07,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1123 transitions, 25391 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 00:07:07,082 INFO L231 Difference]: Finished difference. Result has 302 places, 1097 transitions, 23379 flow [2023-08-27 00:07:07,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22769, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23379, PETRI_PLACES=302, PETRI_TRANSITIONS=1097} [2023-08-27 00:07:07,083 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2023-08-27 00:07:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 1097 transitions, 23379 flow [2023-08-27 00:07:07,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:07,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 00:07:07,084 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:07,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1698282134, now seen corresponding path program 16 times [2023-08-27 00:07:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711628630] [2023-08-27 00:07:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:07,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:07,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711628630] [2023-08-27 00:07:07,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711628630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018030669] [2023-08-27 00:07:07,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:07,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:07,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1097 transitions, 23379 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:07,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:07,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:07,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:10,492 INFO L124 PetriNetUnfolderBase]: 7769/11318 cut-off events. [2023-08-27 00:07:10,492 INFO L125 PetriNetUnfolderBase]: For 277529/277529 co-relation queries the response was YES. [2023-08-27 00:07:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105487 conditions, 11318 events. 7769/11318 cut-off events. For 277529/277529 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63828 event pairs, 1589 based on Foata normal form. 2/11320 useless extension candidates. Maximal degree in co-relation 105013. Up to 10316 conditions per place. [2023-08-27 00:07:10,801 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 936 selfloop transitions, 203 changer transitions 3/1142 dead transitions. [2023-08-27 00:07:10,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1142 transitions, 26198 flow [2023-08-27 00:07:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 00:07:10,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 00:07:10,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 00:07:10,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 00:07:10,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:10,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 00:07:10,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:10,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:10,805 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:10,805 INFO L175 Difference]: Start difference. First operand has 302 places, 1097 transitions, 23379 flow. Second operand 7 states and 588 transitions. [2023-08-27 00:07:10,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1142 transitions, 26198 flow [2023-08-27 00:07:12,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1142 transitions, 25760 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-27 00:07:12,988 INFO L231 Difference]: Finished difference. Result has 306 places, 1101 transitions, 23487 flow [2023-08-27 00:07:12,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22945, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23487, PETRI_PLACES=306, PETRI_TRANSITIONS=1101} [2023-08-27 00:07:12,990 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 277 predicate places. [2023-08-27 00:07:12,990 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1101 transitions, 23487 flow [2023-08-27 00:07:12,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:12,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:12,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 00:07:12,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:12,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1022357110, now seen corresponding path program 17 times [2023-08-27 00:07:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040319231] [2023-08-27 00:07:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040319231] [2023-08-27 00:07:13,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040319231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:13,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:13,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185804] [2023-08-27 00:07:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:13,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:13,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:13,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:13,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1101 transitions, 23487 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:13,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:13,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:16,585 INFO L124 PetriNetUnfolderBase]: 7776/11331 cut-off events. [2023-08-27 00:07:16,585 INFO L125 PetriNetUnfolderBase]: For 275698/275698 co-relation queries the response was YES. [2023-08-27 00:07:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105685 conditions, 11331 events. 7776/11331 cut-off events. For 275698/275698 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 64003 event pairs, 1595 based on Foata normal form. 8/11339 useless extension candidates. Maximal degree in co-relation 105209. Up to 10320 conditions per place. [2023-08-27 00:07:16,721 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 946 selfloop transitions, 195 changer transitions 1/1142 dead transitions. [2023-08-27 00:07:16,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1142 transitions, 26241 flow [2023-08-27 00:07:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 00:07:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 00:07:16,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 00:07:16,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 00:07:16,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:16,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 00:07:16,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:16,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:16,724 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:16,724 INFO L175 Difference]: Start difference. First operand has 306 places, 1101 transitions, 23487 flow. Second operand 7 states and 598 transitions. [2023-08-27 00:07:16,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1142 transitions, 26241 flow [2023-08-27 00:07:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1142 transitions, 25819 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 00:07:19,004 INFO L231 Difference]: Finished difference. Result has 309 places, 1108 transitions, 23643 flow [2023-08-27 00:07:19,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23079, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23643, PETRI_PLACES=309, PETRI_TRANSITIONS=1108} [2023-08-27 00:07:19,005 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2023-08-27 00:07:19,005 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1108 transitions, 23643 flow [2023-08-27 00:07:19,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:19,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:19,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:19,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 00:07:19,006 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:19,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:19,006 INFO L85 PathProgramCache]: Analyzing trace with hash -976852294, now seen corresponding path program 18 times [2023-08-27 00:07:19,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:19,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442895029] [2023-08-27 00:07:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:19,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:19,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:19,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442895029] [2023-08-27 00:07:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442895029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:19,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:19,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854510246] [2023-08-27 00:07:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:19,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:19,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:19,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1108 transitions, 23643 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:22,430 INFO L124 PetriNetUnfolderBase]: 7779/11331 cut-off events. [2023-08-27 00:07:22,431 INFO L125 PetriNetUnfolderBase]: For 279766/279766 co-relation queries the response was YES. [2023-08-27 00:07:22,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105767 conditions, 11331 events. 7779/11331 cut-off events. For 279766/279766 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 63890 event pairs, 1598 based on Foata normal form. 2/11333 useless extension candidates. Maximal degree in co-relation 105289. Up to 10326 conditions per place. [2023-08-27 00:07:22,557 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 934 selfloop transitions, 197 changer transitions 2/1133 dead transitions. [2023-08-27 00:07:22,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1133 transitions, 26171 flow [2023-08-27 00:07:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 00:07:22,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 00:07:22,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 00:07:22,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 00:07:22,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:22,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 00:07:22,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:22,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:22,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:22,561 INFO L175 Difference]: Start difference. First operand has 309 places, 1108 transitions, 23643 flow. Second operand 7 states and 590 transitions. [2023-08-27 00:07:22,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1133 transitions, 26171 flow [2023-08-27 00:07:24,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1133 transitions, 25942 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 00:07:24,776 INFO L231 Difference]: Finished difference. Result has 313 places, 1110 transitions, 23871 flow [2023-08-27 00:07:24,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23418, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23871, PETRI_PLACES=313, PETRI_TRANSITIONS=1110} [2023-08-27 00:07:24,777 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2023-08-27 00:07:24,778 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1110 transitions, 23871 flow [2023-08-27 00:07:24,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:24,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:24,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 00:07:24,778 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:24,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1615237636, now seen corresponding path program 19 times [2023-08-27 00:07:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617886567] [2023-08-27 00:07:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:24,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617886567] [2023-08-27 00:07:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617886567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:24,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:24,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:24,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491776552] [2023-08-27 00:07:24,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:24,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:24,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:24,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:24,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1110 transitions, 23871 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:24,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:24,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:28,397 INFO L124 PetriNetUnfolderBase]: 7802/11370 cut-off events. [2023-08-27 00:07:28,397 INFO L125 PetriNetUnfolderBase]: For 284218/284218 co-relation queries the response was YES. [2023-08-27 00:07:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106183 conditions, 11370 events. 7802/11370 cut-off events. For 284218/284218 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 64295 event pairs, 1594 based on Foata normal form. 18/11388 useless extension candidates. Maximal degree in co-relation 105705. Up to 10314 conditions per place. [2023-08-27 00:07:28,523 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 942 selfloop transitions, 209 changer transitions 0/1151 dead transitions. [2023-08-27 00:07:28,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1151 transitions, 26638 flow [2023-08-27 00:07:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 00:07:28,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 00:07:28,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 00:07:28,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 00:07:28,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:28,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 00:07:28,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:28,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:28,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:28,528 INFO L175 Difference]: Start difference. First operand has 313 places, 1110 transitions, 23871 flow. Second operand 7 states and 600 transitions. [2023-08-27 00:07:28,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1151 transitions, 26638 flow [2023-08-27 00:07:30,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1151 transitions, 26249 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 00:07:30,687 INFO L231 Difference]: Finished difference. Result has 317 places, 1116 transitions, 24055 flow [2023-08-27 00:07:30,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23482, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24055, PETRI_PLACES=317, PETRI_TRANSITIONS=1116} [2023-08-27 00:07:30,688 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2023-08-27 00:07:30,688 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 1116 transitions, 24055 flow [2023-08-27 00:07:30,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:30,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:30,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:30,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 00:07:30,689 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:30,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1024150510, now seen corresponding path program 20 times [2023-08-27 00:07:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335572436] [2023-08-27 00:07:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335572436] [2023-08-27 00:07:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335572436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468883427] [2023-08-27 00:07:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:30,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:30,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:30,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1116 transitions, 24055 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:30,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:30,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:33,966 INFO L124 PetriNetUnfolderBase]: 7818/11398 cut-off events. [2023-08-27 00:07:33,966 INFO L125 PetriNetUnfolderBase]: For 288318/288318 co-relation queries the response was YES. [2023-08-27 00:07:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106641 conditions, 11398 events. 7818/11398 cut-off events. For 288318/288318 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 64557 event pairs, 1606 based on Foata normal form. 12/11410 useless extension candidates. Maximal degree in co-relation 106161. Up to 10378 conditions per place. [2023-08-27 00:07:34,093 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 947 selfloop transitions, 200 changer transitions 0/1147 dead transitions. [2023-08-27 00:07:34,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1147 transitions, 26659 flow [2023-08-27 00:07:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 00:07:34,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 00:07:34,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 00:07:34,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 00:07:34,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:34,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 00:07:34,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:34,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:34,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:34,097 INFO L175 Difference]: Start difference. First operand has 317 places, 1116 transitions, 24055 flow. Second operand 7 states and 594 transitions. [2023-08-27 00:07:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1147 transitions, 26659 flow [2023-08-27 00:07:36,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1147 transitions, 26251 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 00:07:36,239 INFO L231 Difference]: Finished difference. Result has 320 places, 1119 transitions, 24128 flow [2023-08-27 00:07:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23647, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24128, PETRI_PLACES=320, PETRI_TRANSITIONS=1119} [2023-08-27 00:07:36,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2023-08-27 00:07:36,240 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1119 transitions, 24128 flow [2023-08-27 00:07:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:36,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:36,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 00:07:36,241 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:36,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash -486260694, now seen corresponding path program 21 times [2023-08-27 00:07:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:36,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145991504] [2023-08-27 00:07:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:36,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145991504] [2023-08-27 00:07:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145991504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144792991] [2023-08-27 00:07:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:36,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:36,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:36,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1119 transitions, 24128 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:36,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:39,701 INFO L124 PetriNetUnfolderBase]: 7828/11416 cut-off events. [2023-08-27 00:07:39,701 INFO L125 PetriNetUnfolderBase]: For 289673/289673 co-relation queries the response was YES. [2023-08-27 00:07:39,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106846 conditions, 11416 events. 7828/11416 cut-off events. For 289673/289673 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 64728 event pairs, 1608 based on Foata normal form. 8/11424 useless extension candidates. Maximal degree in co-relation 106365. Up to 10402 conditions per place. [2023-08-27 00:07:39,837 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 949 selfloop transitions, 199 changer transitions 0/1148 dead transitions. [2023-08-27 00:07:39,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1148 transitions, 26689 flow [2023-08-27 00:07:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 00:07:39,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 00:07:39,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 00:07:39,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 00:07:39,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:39,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 00:07:39,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:39,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:39,840 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:39,840 INFO L175 Difference]: Start difference. First operand has 320 places, 1119 transitions, 24128 flow. Second operand 7 states and 597 transitions. [2023-08-27 00:07:39,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1148 transitions, 26689 flow [2023-08-27 00:07:42,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1148 transitions, 26285 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 00:07:42,039 INFO L231 Difference]: Finished difference. Result has 322 places, 1120 transitions, 24153 flow [2023-08-27 00:07:42,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23724, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24153, PETRI_PLACES=322, PETRI_TRANSITIONS=1120} [2023-08-27 00:07:42,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 293 predicate places. [2023-08-27 00:07:42,041 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 1120 transitions, 24153 flow [2023-08-27 00:07:42,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:42,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:42,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 00:07:42,041 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:42,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1826476000, now seen corresponding path program 22 times [2023-08-27 00:07:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524448289] [2023-08-27 00:07:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524448289] [2023-08-27 00:07:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524448289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:07:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429403237] [2023-08-27 00:07:42,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:07:42,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:07:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:07:42,172 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) [2023-08-27 00:07:42,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:07:42,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:07:42,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:07:42,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:07:42,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:07:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:42,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:07:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:42,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429403237] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:07:42,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:07:42,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 00:07:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559188242] [2023-08-27 00:07:42,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:07:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 00:07:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 00:07:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:07:42,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 00:07:42,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 1120 transitions, 24153 flow. Second operand has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:42,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:42,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 00:07:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:47,953 INFO L124 PetriNetUnfolderBase]: 10059/14877 cut-off events. [2023-08-27 00:07:47,953 INFO L125 PetriNetUnfolderBase]: For 376717/376717 co-relation queries the response was YES. [2023-08-27 00:07:48,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139471 conditions, 14877 events. 10059/14877 cut-off events. For 376717/376717 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90710 event pairs, 551 based on Foata normal form. 80/14957 useless extension candidates. Maximal degree in co-relation 139004. Up to 5517 conditions per place. [2023-08-27 00:07:48,128 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 970 selfloop transitions, 1024 changer transitions 1/1995 dead transitions. [2023-08-27 00:07:48,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1995 transitions, 42882 flow [2023-08-27 00:07:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-27 00:07:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-27 00:07:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3369 transitions. [2023-08-27 00:07:48,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324775353016688 [2023-08-27 00:07:48,132 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3369 transitions. [2023-08-27 00:07:48,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3369 transitions. [2023-08-27 00:07:48,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:48,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3369 transitions. [2023-08-27 00:07:48,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 82.17073170731707) internal successors, (3369), 41 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:48,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:48,142 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:48,142 INFO L175 Difference]: Start difference. First operand has 322 places, 1120 transitions, 24153 flow. Second operand 41 states and 3369 transitions. [2023-08-27 00:07:48,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1995 transitions, 42882 flow [2023-08-27 00:07:51,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1995 transitions, 42431 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 00:07:51,439 INFO L231 Difference]: Finished difference. Result has 381 places, 1498 transitions, 35977 flow [2023-08-27 00:07:51,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23669, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=35977, PETRI_PLACES=381, PETRI_TRANSITIONS=1498} [2023-08-27 00:07:51,440 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 352 predicate places. [2023-08-27 00:07:51,440 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1498 transitions, 35977 flow [2023-08-27 00:07:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:51,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:51,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:51,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:07:51,641 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,SelfDestructingSolverStorable30 [2023-08-27 00:07:51,641 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:07:51,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1329227984, now seen corresponding path program 23 times [2023-08-27 00:07:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180180583] [2023-08-27 00:07:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:51,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:51,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180180583] [2023-08-27 00:07:51,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180180583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:07:51,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:07:51,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:07:51,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701564558] [2023-08-27 00:07:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:07:51,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:07:51,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:07:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:07:51,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:07:51,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1498 transitions, 35977 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:51,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:51,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:07:51,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:57,500 INFO L124 PetriNetUnfolderBase]: 10056/14870 cut-off events. [2023-08-27 00:07:57,500 INFO L125 PetriNetUnfolderBase]: For 479780/479780 co-relation queries the response was YES. [2023-08-27 00:07:57,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151702 conditions, 14870 events. 10056/14870 cut-off events. For 479780/479780 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90522 event pairs, 2072 based on Foata normal form. 2/14872 useless extension candidates. Maximal degree in co-relation 151174. Up to 13790 conditions per place. [2023-08-27 00:07:57,728 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1294 selfloop transitions, 224 changer transitions 2/1520 dead transitions. [2023-08-27 00:07:57,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1520 transitions, 39215 flow [2023-08-27 00:07:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:07:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:07:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 00:07:57,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 00:07:57,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 00:07:57,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 00:07:57,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:57,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 00:07:57,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:57,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:57,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:57,731 INFO L175 Difference]: Start difference. First operand has 381 places, 1498 transitions, 35977 flow. Second operand 7 states and 588 transitions. [2023-08-27 00:07:57,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1520 transitions, 39215 flow [2023-08-27 00:08:03,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1520 transitions, 37344 flow, removed 608 selfloop flow, removed 4 redundant places. [2023-08-27 00:08:03,127 INFO L231 Difference]: Finished difference. Result has 384 places, 1498 transitions, 34553 flow [2023-08-27 00:08:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34069, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34553, PETRI_PLACES=384, PETRI_TRANSITIONS=1498} [2023-08-27 00:08:03,129 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 355 predicate places. [2023-08-27 00:08:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1498 transitions, 34553 flow [2023-08-27 00:08:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:03,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:08:03,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:08:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 00:08:03,129 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:08:03,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:08:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash -595682358, now seen corresponding path program 24 times [2023-08-27 00:08:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:08:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102241614] [2023-08-27 00:08:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:08:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:08:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:08:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:08:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102241614] [2023-08-27 00:08:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102241614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:08:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:08:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:08:03,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123839821] [2023-08-27 00:08:03,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:08:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:08:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:08:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:08:03,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:08:03,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1498 transitions, 34553 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:03,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:03,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:08:03,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:08,803 INFO L124 PetriNetUnfolderBase]: 10071/14895 cut-off events. [2023-08-27 00:08:08,804 INFO L125 PetriNetUnfolderBase]: For 458319/458319 co-relation queries the response was YES. [2023-08-27 00:08:08,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147416 conditions, 14895 events. 10071/14895 cut-off events. For 458319/458319 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 90716 event pairs, 2069 based on Foata normal form. 12/14907 useless extension candidates. Maximal degree in co-relation 146888. Up to 13800 conditions per place. [2023-08-27 00:08:08,986 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1316 selfloop transitions, 225 changer transitions 0/1541 dead transitions. [2023-08-27 00:08:08,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1541 transitions, 38122 flow [2023-08-27 00:08:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:08:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:08:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2023-08-27 00:08:08,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443609022556391 [2023-08-27 00:08:08,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2023-08-27 00:08:08,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2023-08-27 00:08:08,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:08,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2023-08-27 00:08:08,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.42857142857143) internal successors, (591), 7 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:08,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:08,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:08,992 INFO L175 Difference]: Start difference. First operand has 384 places, 1498 transitions, 34553 flow. Second operand 7 states and 591 transitions. [2023-08-27 00:08:08,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1541 transitions, 38122 flow [2023-08-27 00:08:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1541 transitions, 37858 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 00:08:14,451 INFO L231 Difference]: Finished difference. Result has 387 places, 1501 transitions, 34835 flow [2023-08-27 00:08:14,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34289, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34835, PETRI_PLACES=387, PETRI_TRANSITIONS=1501} [2023-08-27 00:08:14,453 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 358 predicate places. [2023-08-27 00:08:14,453 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 1501 transitions, 34835 flow [2023-08-27 00:08:14,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:14,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:08:14,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:08:14,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 00:08:14,454 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:08:14,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:08:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash 671774820, now seen corresponding path program 25 times [2023-08-27 00:08:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:08:14,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326151715] [2023-08-27 00:08:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:08:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:08:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:08:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:14,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:08:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326151715] [2023-08-27 00:08:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326151715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:08:14,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:08:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:08:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541906310] [2023-08-27 00:08:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:08:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:08:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:08:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:08:14,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:08:14,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1501 transitions, 34835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:14,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:14,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:08:14,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:19,998 INFO L124 PetriNetUnfolderBase]: 10087/14923 cut-off events. [2023-08-27 00:08:19,998 INFO L125 PetriNetUnfolderBase]: For 469837/469837 co-relation queries the response was YES. [2023-08-27 00:08:20,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147993 conditions, 14923 events. 10087/14923 cut-off events. For 469837/469837 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 91005 event pairs, 2076 based on Foata normal form. 12/14935 useless extension candidates. Maximal degree in co-relation 147464. Up to 13828 conditions per place. [2023-08-27 00:08:20,179 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1304 selfloop transitions, 227 changer transitions 0/1531 dead transitions. [2023-08-27 00:08:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1531 transitions, 38243 flow [2023-08-27 00:08:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:08:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:08:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 00:08:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 00:08:20,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 00:08:20,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 00:08:20,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:20,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 00:08:20,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 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) [2023-08-27 00:08:20,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:20,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:20,182 INFO L175 Difference]: Start difference. First operand has 387 places, 1501 transitions, 34835 flow. Second operand 7 states and 592 transitions. [2023-08-27 00:08:20,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1531 transitions, 38243 flow [2023-08-27 00:08:25,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1531 transitions, 37783 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-27 00:08:25,316 INFO L231 Difference]: Finished difference. Result has 389 places, 1504 transitions, 34931 flow [2023-08-27 00:08:25,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34375, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34931, PETRI_PLACES=389, PETRI_TRANSITIONS=1504} [2023-08-27 00:08:25,318 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-08-27 00:08:25,318 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1504 transitions, 34931 flow [2023-08-27 00:08:25,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:25,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:08:25,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:08:25,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 00:08:25,319 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:08:25,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:08:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1154295143, now seen corresponding path program 2 times [2023-08-27 00:08:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:08:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84055980] [2023-08-27 00:08:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:08:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:08:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:08:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:08:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84055980] [2023-08-27 00:08:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84055980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:08:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:08:25,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:08:25,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894964425] [2023-08-27 00:08:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:08:25,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:08:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:08:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:08:25,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:08:25,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1504 transitions, 34931 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:25,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:25,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:08:25,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:31,078 INFO L124 PetriNetUnfolderBase]: 10101/15004 cut-off events. [2023-08-27 00:08:31,078 INFO L125 PetriNetUnfolderBase]: For 473234/473234 co-relation queries the response was YES. [2023-08-27 00:08:31,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148459 conditions, 15004 events. 10101/15004 cut-off events. For 473234/473234 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 92415 event pairs, 2063 based on Foata normal form. 36/15040 useless extension candidates. Maximal degree in co-relation 147929. Up to 13710 conditions per place. [2023-08-27 00:08:31,343 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1327 selfloop transitions, 217 changer transitions 11/1555 dead transitions. [2023-08-27 00:08:31,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1555 transitions, 38617 flow [2023-08-27 00:08:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:08:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:08:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 00:08:31,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 00:08:31,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 00:08:31,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 00:08:31,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:31,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 00:08:31,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:31,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:31,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:31,347 INFO L175 Difference]: Start difference. First operand has 389 places, 1504 transitions, 34931 flow. Second operand 7 states and 605 transitions. [2023-08-27 00:08:31,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1555 transitions, 38617 flow [2023-08-27 00:08:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1555 transitions, 38147 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 00:08:36,589 INFO L231 Difference]: Finished difference. Result has 393 places, 1506 transitions, 34982 flow [2023-08-27 00:08:36,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34461, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34982, PETRI_PLACES=393, PETRI_TRANSITIONS=1506} [2023-08-27 00:08:36,591 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 364 predicate places. [2023-08-27 00:08:36,591 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1506 transitions, 34982 flow [2023-08-27 00:08:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:36,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:08:36,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:08:36,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 00:08:36,591 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:08:36,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:08:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash -595960386, now seen corresponding path program 8 times [2023-08-27 00:08:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:08:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565956891] [2023-08-27 00:08:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:08:36,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:08:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:08:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:08:36,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565956891] [2023-08-27 00:08:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565956891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:08:36,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:08:36,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:08:36,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236888637] [2023-08-27 00:08:36,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:08:36,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:08:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:08:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:08:36,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:08:36,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1506 transitions, 34982 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:36,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:36,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:08:36,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:42,806 INFO L124 PetriNetUnfolderBase]: 10440/15550 cut-off events. [2023-08-27 00:08:42,806 INFO L125 PetriNetUnfolderBase]: For 484980/484980 co-relation queries the response was YES. [2023-08-27 00:08:43,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153349 conditions, 15550 events. 10440/15550 cut-off events. For 484980/484980 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 96496 event pairs, 1623 based on Foata normal form. 14/15564 useless extension candidates. Maximal degree in co-relation 152996. Up to 8234 conditions per place. [2023-08-27 00:08:43,202 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1033 selfloop transitions, 576 changer transitions 0/1609 dead transitions. [2023-08-27 00:08:43,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1609 transitions, 39802 flow [2023-08-27 00:08:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:08:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:08:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 864 transitions. [2023-08-27 00:08:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-27 00:08:43,210 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 864 transitions. [2023-08-27 00:08:43,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 864 transitions. [2023-08-27 00:08:43,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:43,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 864 transitions. [2023-08-27 00:08:43,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.4) internal successors, (864), 10 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:43,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:43,213 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:43,213 INFO L175 Difference]: Start difference. First operand has 393 places, 1506 transitions, 34982 flow. Second operand 10 states and 864 transitions. [2023-08-27 00:08:43,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1609 transitions, 39802 flow [2023-08-27 00:08:49,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1609 transitions, 39315 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-27 00:08:49,445 INFO L231 Difference]: Finished difference. Result has 394 places, 1532 transitions, 37204 flow [2023-08-27 00:08:49,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34473, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37204, PETRI_PLACES=394, PETRI_TRANSITIONS=1532} [2023-08-27 00:08:49,446 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 365 predicate places. [2023-08-27 00:08:49,447 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1532 transitions, 37204 flow [2023-08-27 00:08:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:49,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:08:49,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:08:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 00:08:49,447 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:08:49,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:08:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1265429916, now seen corresponding path program 9 times [2023-08-27 00:08:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:08:49,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307772932] [2023-08-27 00:08:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:08:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:08:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:08:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:08:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307772932] [2023-08-27 00:08:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307772932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:08:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734139583] [2023-08-27 00:08:49,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:08:49,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:08:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:08:49,561 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) [2023-08-27 00:08:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:08:49,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:08:49,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:08:49,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:08:49,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:08:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:49,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:08:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:08:50,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734139583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:08:50,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:08:50,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-08-27 00:08:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280620773] [2023-08-27 00:08:50,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:08:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 00:08:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 00:08:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-08-27 00:08:50,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 00:08:50,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1532 transitions, 37204 flow. Second operand has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:50,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:50,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 00:08:50,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:56,278 INFO L124 PetriNetUnfolderBase]: 11485/16959 cut-off events. [2023-08-27 00:08:56,279 INFO L125 PetriNetUnfolderBase]: For 598417/598417 co-relation queries the response was YES. [2023-08-27 00:08:56,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172710 conditions, 16959 events. 11485/16959 cut-off events. For 598417/598417 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 105218 event pairs, 1755 based on Foata normal form. 108/17067 useless extension candidates. Maximal degree in co-relation 171959. Up to 9241 conditions per place. [2023-08-27 00:08:56,584 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 961 selfloop transitions, 957 changer transitions 0/1918 dead transitions. [2023-08-27 00:08:56,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1918 transitions, 47931 flow [2023-08-27 00:08:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 00:08:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 00:08:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2286 transitions. [2023-08-27 00:08:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42969924812030075 [2023-08-27 00:08:56,587 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2286 transitions. [2023-08-27 00:08:56,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2286 transitions. [2023-08-27 00:08:56,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:56,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2286 transitions. [2023-08-27 00:08:56,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.64285714285714) internal successors, (2286), 28 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:56,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:56,593 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:56,593 INFO L175 Difference]: Start difference. First operand has 394 places, 1532 transitions, 37204 flow. Second operand 28 states and 2286 transitions. [2023-08-27 00:08:56,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1918 transitions, 47931 flow [2023-08-27 00:09:04,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1918 transitions, 47931 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:09:04,975 INFO L231 Difference]: Finished difference. Result has 437 places, 1725 transitions, 44778 flow [2023-08-27 00:09:04,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=37204, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=775, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=44778, PETRI_PLACES=437, PETRI_TRANSITIONS=1725} [2023-08-27 00:09:04,976 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 408 predicate places. [2023-08-27 00:09:04,976 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1725 transitions, 44778 flow [2023-08-27 00:09:04,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:04,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:09:04,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:09:04,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:09:05,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:09:05,177 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:09:05,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:09:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash -483232915, now seen corresponding path program 3 times [2023-08-27 00:09:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:09:05,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562626734] [2023-08-27 00:09:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:09:05,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:09:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:09:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:09:05,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562626734] [2023-08-27 00:09:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562626734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:09:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:09:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:09:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579121568] [2023-08-27 00:09:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:09:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:09:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:09:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:09:05,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:09:05,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:09:05,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1725 transitions, 44778 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:05,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:09:05,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:09:05,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:09:13,330 INFO L124 PetriNetUnfolderBase]: 11513/17003 cut-off events. [2023-08-27 00:09:13,330 INFO L125 PetriNetUnfolderBase]: For 657393/657393 co-relation queries the response was YES. [2023-08-27 00:09:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183316 conditions, 17003 events. 11513/17003 cut-off events. For 657393/657393 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 105368 event pairs, 2349 based on Foata normal form. 16/17019 useless extension candidates. Maximal degree in co-relation 182520. Up to 15682 conditions per place. [2023-08-27 00:09:13,578 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1505 selfloop transitions, 259 changer transitions 0/1764 dead transitions. [2023-08-27 00:09:13,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1764 transitions, 48800 flow [2023-08-27 00:09:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:09:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:09:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 00:09:13,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 00:09:13,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 00:09:13,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 00:09:13,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:09:13,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 00:09:13,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:13,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:13,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:13,584 INFO L175 Difference]: Start difference. First operand has 437 places, 1725 transitions, 44778 flow. Second operand 7 states and 599 transitions. [2023-08-27 00:09:13,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1764 transitions, 48800 flow [2023-08-27 00:09:21,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1764 transitions, 47060 flow, removed 565 selfloop flow, removed 7 redundant places. [2023-08-27 00:09:22,011 INFO L231 Difference]: Finished difference. Result has 438 places, 1732 transitions, 43792 flow [2023-08-27 00:09:22,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43038, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43792, PETRI_PLACES=438, PETRI_TRANSITIONS=1732} [2023-08-27 00:09:22,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 409 predicate places. [2023-08-27 00:09:22,012 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 1732 transitions, 43792 flow [2023-08-27 00:09:22,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:22,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:09:22,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:09:22,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 00:09:22,013 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:09:22,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:09:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash -167278109, now seen corresponding path program 4 times [2023-08-27 00:09:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:09:22,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237297470] [2023-08-27 00:09:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:09:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:09:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:09:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:09:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237297470] [2023-08-27 00:09:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237297470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:09:22,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:09:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:09:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933865990] [2023-08-27 00:09:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:09:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:09:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:09:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:09:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:09:22,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:09:22,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1732 transitions, 43792 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:22,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:09:22,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:09:22,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:09:29,554 INFO L124 PetriNetUnfolderBase]: 11527/17084 cut-off events. [2023-08-27 00:09:29,555 INFO L125 PetriNetUnfolderBase]: For 621799/621799 co-relation queries the response was YES. [2023-08-27 00:09:29,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178609 conditions, 17084 events. 11527/17084 cut-off events. For 621799/621799 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106685 event pairs, 2395 based on Foata normal form. 36/17120 useless extension candidates. Maximal degree in co-relation 177811. Up to 15782 conditions per place. [2023-08-27 00:09:29,999 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1524 selfloop transitions, 237 changer transitions 14/1775 dead transitions. [2023-08-27 00:09:30,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1775 transitions, 47721 flow [2023-08-27 00:09:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:09:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:09:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 00:09:30,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 00:09:30,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 00:09:30,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 00:09:30,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:09:30,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 00:09:30,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:30,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:30,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:30,003 INFO L175 Difference]: Start difference. First operand has 438 places, 1732 transitions, 43792 flow. Second operand 7 states and 603 transitions. [2023-08-27 00:09:30,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 1775 transitions, 47721 flow [2023-08-27 00:09:38,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1775 transitions, 46881 flow, removed 167 selfloop flow, removed 4 redundant places. [2023-08-27 00:09:38,118 INFO L231 Difference]: Finished difference. Result has 442 places, 1727 transitions, 43318 flow [2023-08-27 00:09:38,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42952, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43318, PETRI_PLACES=442, PETRI_TRANSITIONS=1727} [2023-08-27 00:09:38,119 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 413 predicate places. [2023-08-27 00:09:38,119 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 1727 transitions, 43318 flow [2023-08-27 00:09:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:38,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:09:38,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:09:38,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 00:09:38,120 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:09:38,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:09:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 280465283, now seen corresponding path program 5 times [2023-08-27 00:09:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:09:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112001921] [2023-08-27 00:09:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:09:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:09:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:09:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:09:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112001921] [2023-08-27 00:09:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112001921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:09:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134933504] [2023-08-27 00:09:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:09:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:09:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:09:38,225 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) [2023-08-27 00:09:38,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:09:38,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:09:38,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:09:38,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:09:38,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:09:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:38,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:09:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:38,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134933504] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:09:38,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:09:38,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 00:09:38,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408096355] [2023-08-27 00:09:38,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:09:38,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:09:38,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:09:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:09:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:09:38,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:09:38,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1727 transitions, 43318 flow. Second operand has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:38,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:09:38,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:09:38,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:09:45,676 INFO L124 PetriNetUnfolderBase]: 11513/17035 cut-off events. [2023-08-27 00:09:45,676 INFO L125 PetriNetUnfolderBase]: For 607239/607239 co-relation queries the response was YES. [2023-08-27 00:09:45,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177246 conditions, 17035 events. 11513/17035 cut-off events. For 607239/607239 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 105921 event pairs, 2395 based on Foata normal form. 4/17039 useless extension candidates. Maximal degree in co-relation 176795. Up to 15830 conditions per place. [2023-08-27 00:09:45,934 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1512 selfloop transitions, 245 changer transitions 0/1757 dead transitions. [2023-08-27 00:09:45,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1757 transitions, 47163 flow [2023-08-27 00:09:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:09:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:09:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2023-08-27 00:09:45,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44586466165413535 [2023-08-27 00:09:45,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2023-08-27 00:09:45,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2023-08-27 00:09:45,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:09:45,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2023-08-27 00:09:45,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:45,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:45,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:45,937 INFO L175 Difference]: Start difference. First operand has 442 places, 1727 transitions, 43318 flow. Second operand 7 states and 593 transitions. [2023-08-27 00:09:45,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1757 transitions, 47163 flow [2023-08-27 00:09:53,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1757 transitions, 46883 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 00:09:54,001 INFO L231 Difference]: Finished difference. Result has 444 places, 1730 transitions, 43611 flow [2023-08-27 00:09:54,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43040, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43611, PETRI_PLACES=444, PETRI_TRANSITIONS=1730} [2023-08-27 00:09:54,003 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 415 predicate places. [2023-08-27 00:09:54,003 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1730 transitions, 43611 flow [2023-08-27 00:09:54,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:54,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:09:54,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:09:54,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 00:09:54,206 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,SelfDestructingSolverStorable39 [2023-08-27 00:09:54,206 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:09:54,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:09:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -516251336, now seen corresponding path program 10 times [2023-08-27 00:09:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:09:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389799954] [2023-08-27 00:09:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:09:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:09:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:09:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:09:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389799954] [2023-08-27 00:09:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389799954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:09:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:09:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:09:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910928576] [2023-08-27 00:09:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:09:54,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:09:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:09:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:09:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:09:54,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:09:54,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1730 transitions, 43611 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:54,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:09:54,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:09:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:10:01,686 INFO L124 PetriNetUnfolderBase]: 11566/17114 cut-off events. [2023-08-27 00:10:01,686 INFO L125 PetriNetUnfolderBase]: For 623745/623745 co-relation queries the response was YES. [2023-08-27 00:10:01,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178358 conditions, 17114 events. 11566/17114 cut-off events. For 623745/623745 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106566 event pairs, 2402 based on Foata normal form. 24/17138 useless extension candidates. Maximal degree in co-relation 177580. Up to 15839 conditions per place. [2023-08-27 00:10:02,098 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1518 selfloop transitions, 255 changer transitions 0/1773 dead transitions. [2023-08-27 00:10:02,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1773 transitions, 47828 flow [2023-08-27 00:10:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:10:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:10:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 00:10:02,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 00:10:02,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 00:10:02,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 00:10:02,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:10:02,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 00:10:02,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:02,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:02,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:02,101 INFO L175 Difference]: Start difference. First operand has 444 places, 1730 transitions, 43611 flow. Second operand 7 states and 600 transitions. [2023-08-27 00:10:02,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1773 transitions, 47828 flow [2023-08-27 00:10:09,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1773 transitions, 47124 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 00:10:09,871 INFO L231 Difference]: Finished difference. Result has 446 places, 1742 transitions, 43799 flow [2023-08-27 00:10:09,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42925, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43799, PETRI_PLACES=446, PETRI_TRANSITIONS=1742} [2023-08-27 00:10:09,873 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 417 predicate places. [2023-08-27 00:10:09,873 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1742 transitions, 43799 flow [2023-08-27 00:10:09,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:09,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:10:09,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:10:09,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 00:10:09,874 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:10:09,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:10:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 128564496, now seen corresponding path program 11 times [2023-08-27 00:10:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:10:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244164454] [2023-08-27 00:10:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:10:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:10:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:09,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:10:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244164454] [2023-08-27 00:10:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244164454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:10:09,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:10:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:10:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055890795] [2023-08-27 00:10:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:10:09,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:10:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:10:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:10:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:10:09,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:10:09,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1742 transitions, 43799 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:09,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:10:09,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:10:09,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:10:17,734 INFO L124 PetriNetUnfolderBase]: 11593/17155 cut-off events. [2023-08-27 00:10:17,734 INFO L125 PetriNetUnfolderBase]: For 614059/614059 co-relation queries the response was YES. [2023-08-27 00:10:17,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178968 conditions, 17155 events. 11593/17155 cut-off events. For 614059/614059 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 106874 event pairs, 2410 based on Foata normal form. 14/17169 useless extension candidates. Maximal degree in co-relation 178188. Up to 15895 conditions per place. [2023-08-27 00:10:18,011 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1523 selfloop transitions, 251 changer transitions 0/1774 dead transitions. [2023-08-27 00:10:18,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1774 transitions, 47689 flow [2023-08-27 00:10:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:10:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:10:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 00:10:18,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 00:10:18,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 00:10:18,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 00:10:18,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:10:18,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 00:10:18,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:18,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:18,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:18,015 INFO L175 Difference]: Start difference. First operand has 446 places, 1742 transitions, 43799 flow. Second operand 7 states and 598 transitions. [2023-08-27 00:10:18,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1774 transitions, 47689 flow [2023-08-27 00:10:25,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1774 transitions, 47403 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 00:10:25,693 INFO L231 Difference]: Finished difference. Result has 450 places, 1744 transitions, 44096 flow [2023-08-27 00:10:25,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43513, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44096, PETRI_PLACES=450, PETRI_TRANSITIONS=1744} [2023-08-27 00:10:25,694 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 421 predicate places. [2023-08-27 00:10:25,695 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 1744 transitions, 44096 flow [2023-08-27 00:10:25,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:25,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:10:25,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:10:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 00:10:25,695 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:10:25,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:10:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2061475308, now seen corresponding path program 12 times [2023-08-27 00:10:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:10:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761137716] [2023-08-27 00:10:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:10:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:10:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:10:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761137716] [2023-08-27 00:10:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761137716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:10:25,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:10:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:10:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943906213] [2023-08-27 00:10:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:10:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:10:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:10:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:10:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:10:25,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:10:25,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1744 transitions, 44096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:25,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:10:25,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:10:25,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:10:33,298 INFO L124 PetriNetUnfolderBase]: 11605/17175 cut-off events. [2023-08-27 00:10:33,298 INFO L125 PetriNetUnfolderBase]: For 628789/628789 co-relation queries the response was YES. [2023-08-27 00:10:33,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179413 conditions, 17175 events. 11605/17175 cut-off events. For 628789/628789 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 107078 event pairs, 2424 based on Foata normal form. 8/17183 useless extension candidates. Maximal degree in co-relation 178632. Up to 15939 conditions per place. [2023-08-27 00:10:33,554 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1521 selfloop transitions, 250 changer transitions 0/1771 dead transitions. [2023-08-27 00:10:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1771 transitions, 47976 flow [2023-08-27 00:10:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:10:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:10:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 00:10:33,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 00:10:33,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 00:10:33,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 00:10:33,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:10:33,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 00:10:33,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 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) [2023-08-27 00:10:33,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:33,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:33,559 INFO L175 Difference]: Start difference. First operand has 450 places, 1744 transitions, 44096 flow. Second operand 7 states and 592 transitions. [2023-08-27 00:10:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1771 transitions, 47976 flow [2023-08-27 00:10:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1771 transitions, 47466 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 00:10:41,620 INFO L231 Difference]: Finished difference. Result has 452 places, 1747 transitions, 44177 flow [2023-08-27 00:10:41,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43592, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44177, PETRI_PLACES=452, PETRI_TRANSITIONS=1747} [2023-08-27 00:10:41,622 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 423 predicate places. [2023-08-27 00:10:41,622 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1747 transitions, 44177 flow [2023-08-27 00:10:41,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:41,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:10:41,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:10:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-27 00:10:41,622 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:10:41,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:10:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1573679163, now seen corresponding path program 6 times [2023-08-27 00:10:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:10:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997696617] [2023-08-27 00:10:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:10:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:10:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:41,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:10:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997696617] [2023-08-27 00:10:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997696617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:10:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869141598] [2023-08-27 00:10:41,737 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:10:41,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:10:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:10:41,741 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) [2023-08-27 00:10:41,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:10:41,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 00:10:41,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:10:41,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:10:41,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:10:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:41,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:10:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869141598] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:10:42,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:10:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-08-27 00:10:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612840959] [2023-08-27 00:10:42,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:10:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:10:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:10:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:10:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:10:42,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:10:42,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1747 transitions, 44177 flow. Second operand has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:42,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:10:42,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:10:42,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:10:49,545 INFO L124 PetriNetUnfolderBase]: 11675/17287 cut-off events. [2023-08-27 00:10:49,545 INFO L125 PetriNetUnfolderBase]: For 629267/629267 co-relation queries the response was YES. [2023-08-27 00:10:49,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180486 conditions, 17287 events. 11675/17287 cut-off events. For 629267/629267 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 107984 event pairs, 2420 based on Foata normal form. 4/17291 useless extension candidates. Maximal degree in co-relation 179705. Up to 15967 conditions per place. [2023-08-27 00:10:49,994 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1532 selfloop transitions, 263 changer transitions 0/1795 dead transitions. [2023-08-27 00:10:49,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 1795 transitions, 48399 flow [2023-08-27 00:10:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:10:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:10:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 763 transitions. [2023-08-27 00:10:49,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461988304093567 [2023-08-27 00:10:49,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 763 transitions. [2023-08-27 00:10:49,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 763 transitions. [2023-08-27 00:10:49,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:10:49,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 763 transitions. [2023-08-27 00:10:49,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:49,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:49,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:49,997 INFO L175 Difference]: Start difference. First operand has 452 places, 1747 transitions, 44177 flow. Second operand 9 states and 763 transitions. [2023-08-27 00:10:49,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 1795 transitions, 48399 flow [2023-08-27 00:10:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1795 transitions, 48116 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 00:10:57,814 INFO L231 Difference]: Finished difference. Result has 458 places, 1758 transitions, 44755 flow [2023-08-27 00:10:57,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43902, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44755, PETRI_PLACES=458, PETRI_TRANSITIONS=1758} [2023-08-27 00:10:57,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 429 predicate places. [2023-08-27 00:10:57,816 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1758 transitions, 44755 flow [2023-08-27 00:10:57,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:57,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:10:57,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:10:57,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 00:10:58,016 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,SelfDestructingSolverStorable43 [2023-08-27 00:10:58,017 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:10:58,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:10:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1476022069, now seen corresponding path program 7 times [2023-08-27 00:10:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:10:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998970550] [2023-08-27 00:10:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:10:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:10:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:58,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:10:58,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998970550] [2023-08-27 00:10:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998970550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:10:58,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852098626] [2023-08-27 00:10:58,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:10:58,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:10:58,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:10:58,129 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) [2023-08-27 00:10:58,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:10:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:58,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:10:58,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:10:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:58,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:10:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852098626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:10:58,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:10:58,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 00:10:58,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844854000] [2023-08-27 00:10:58,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:10:58,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:10:58,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:10:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:10:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:10:58,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:10:58,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1758 transitions, 44755 flow. Second operand has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:58,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:10:58,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:10:58,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:11:05,986 INFO L124 PetriNetUnfolderBase]: 11663/17261 cut-off events. [2023-08-27 00:11:05,986 INFO L125 PetriNetUnfolderBase]: For 641156/641156 co-relation queries the response was YES. [2023-08-27 00:11:06,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180681 conditions, 17261 events. 11663/17261 cut-off events. For 641156/641156 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 107705 event pairs, 2426 based on Foata normal form. 8/17269 useless extension candidates. Maximal degree in co-relation 179898. Up to 15967 conditions per place. [2023-08-27 00:11:06,238 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1524 selfloop transitions, 262 changer transitions 0/1786 dead transitions. [2023-08-27 00:11:06,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1786 transitions, 48627 flow [2023-08-27 00:11:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:11:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:11:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 678 transitions. [2023-08-27 00:11:06,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44605263157894737 [2023-08-27 00:11:06,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 678 transitions. [2023-08-27 00:11:06,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 678 transitions. [2023-08-27 00:11:06,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:11:06,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 678 transitions. [2023-08-27 00:11:06,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:06,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:06,242 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:06,242 INFO L175 Difference]: Start difference. First operand has 458 places, 1758 transitions, 44755 flow. Second operand 8 states and 678 transitions. [2023-08-27 00:11:06,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1786 transitions, 48627 flow [2023-08-27 00:11:14,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1786 transitions, 48381 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 00:11:14,401 INFO L231 Difference]: Finished difference. Result has 462 places, 1757 transitions, 45008 flow [2023-08-27 00:11:14,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44484, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45008, PETRI_PLACES=462, PETRI_TRANSITIONS=1757} [2023-08-27 00:11:14,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 00:11:14,402 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1757 transitions, 45008 flow [2023-08-27 00:11:14,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:14,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:11:14,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:11:14,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 00:11:14,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:11:14,603 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:11:14,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:11:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash 877664846, now seen corresponding path program 13 times [2023-08-27 00:11:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:11:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360515640] [2023-08-27 00:11:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:11:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:11:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:11:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:11:14,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:11:14,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360515640] [2023-08-27 00:11:14,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360515640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:11:14,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:11:14,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:11:14,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148804347] [2023-08-27 00:11:14,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:11:14,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:11:14,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:11:14,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:11:14,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:11:14,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:11:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1757 transitions, 45008 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:14,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:11:14,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:11:14,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:11:21,798 INFO L124 PetriNetUnfolderBase]: 11592/17126 cut-off events. [2023-08-27 00:11:21,798 INFO L125 PetriNetUnfolderBase]: For 647515/647515 co-relation queries the response was YES. [2023-08-27 00:11:21,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179742 conditions, 17126 events. 11592/17126 cut-off events. For 647515/647515 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 106321 event pairs, 2213 based on Foata normal form. 58/17184 useless extension candidates. Maximal degree in co-relation 179139. Up to 15295 conditions per place. [2023-08-27 00:11:22,067 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1469 selfloop transitions, 337 changer transitions 0/1806 dead transitions. [2023-08-27 00:11:22,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1806 transitions, 49118 flow [2023-08-27 00:11:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:11:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:11:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 00:11:22,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 00:11:22,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 00:11:22,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 00:11:22,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:11:22,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 00:11:22,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:22,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:22,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:22,070 INFO L175 Difference]: Start difference. First operand has 462 places, 1757 transitions, 45008 flow. Second operand 7 states and 599 transitions. [2023-08-27 00:11:22,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1806 transitions, 49118 flow [2023-08-27 00:11:30,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1806 transitions, 48582 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 00:11:30,170 INFO L231 Difference]: Finished difference. Result has 462 places, 1763 transitions, 45326 flow [2023-08-27 00:11:30,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44480, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45326, PETRI_PLACES=462, PETRI_TRANSITIONS=1763} [2023-08-27 00:11:30,172 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 00:11:30,172 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1763 transitions, 45326 flow [2023-08-27 00:11:30,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:30,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:11:30,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:11:30,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 00:11:30,173 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:11:30,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:11:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash 441642440, now seen corresponding path program 14 times [2023-08-27 00:11:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:11:30,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517117750] [2023-08-27 00:11:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:11:30,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:11:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:11:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:11:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:11:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517117750] [2023-08-27 00:11:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517117750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:11:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:11:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:11:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252923080] [2023-08-27 00:11:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:11:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:11:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:11:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:11:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:11:30,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:11:30,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1763 transitions, 45326 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:30,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:11:30,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:11:30,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:11:37,733 INFO L124 PetriNetUnfolderBase]: 11593/17103 cut-off events. [2023-08-27 00:11:37,733 INFO L125 PetriNetUnfolderBase]: For 654288/654288 co-relation queries the response was YES. [2023-08-27 00:11:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180350 conditions, 17103 events. 11593/17103 cut-off events. For 654288/654288 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 105869 event pairs, 2348 based on Foata normal form. 14/17117 useless extension candidates. Maximal degree in co-relation 179746. Up to 15817 conditions per place. [2023-08-27 00:11:37,971 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1509 selfloop transitions, 294 changer transitions 0/1803 dead transitions. [2023-08-27 00:11:37,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1803 transitions, 49361 flow [2023-08-27 00:11:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:11:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:11:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 00:11:37,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 00:11:37,972 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 00:11:37,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 00:11:37,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:11:37,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 00:11:37,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:37,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:37,974 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:37,974 INFO L175 Difference]: Start difference. First operand has 462 places, 1763 transitions, 45326 flow. Second operand 7 states and 588 transitions. [2023-08-27 00:11:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1803 transitions, 49361 flow [2023-08-27 00:11:45,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1803 transitions, 48642 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-27 00:11:45,820 INFO L231 Difference]: Finished difference. Result has 462 places, 1769 transitions, 45345 flow [2023-08-27 00:11:45,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44470, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45345, PETRI_PLACES=462, PETRI_TRANSITIONS=1769} [2023-08-27 00:11:45,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 00:11:45,822 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1769 transitions, 45345 flow [2023-08-27 00:11:45,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:45,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:11:45,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:11:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 00:11:45,822 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:11:45,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:11:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -868627026, now seen corresponding path program 15 times [2023-08-27 00:11:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:11:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248596648] [2023-08-27 00:11:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:11:45,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:11:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:11:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:11:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:11:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248596648] [2023-08-27 00:11:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248596648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:11:45,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:11:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:11:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059232421] [2023-08-27 00:11:45,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:11:45,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:11:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:11:45,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:11:45,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:11:45,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:11:45,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1769 transitions, 45345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:45,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:11:45,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:11:45,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:11:52,916 INFO L124 PetriNetUnfolderBase]: 11671/17181 cut-off events. [2023-08-27 00:11:52,917 INFO L125 PetriNetUnfolderBase]: For 656413/656413 co-relation queries the response was YES. [2023-08-27 00:11:53,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181597 conditions, 17181 events. 11671/17181 cut-off events. For 656413/656413 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 105941 event pairs, 2298 based on Foata normal form. 60/17241 useless extension candidates. Maximal degree in co-relation 181096. Up to 15528 conditions per place. [2023-08-27 00:11:53,157 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1500 selfloop transitions, 326 changer transitions 0/1826 dead transitions. [2023-08-27 00:11:53,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1826 transitions, 49990 flow [2023-08-27 00:11:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:11:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:11:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 00:11:53,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 00:11:53,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 00:11:53,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 00:11:53,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:11:53,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 00:11:53,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:53,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:53,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:53,160 INFO L175 Difference]: Start difference. First operand has 462 places, 1769 transitions, 45345 flow. Second operand 7 states and 598 transitions. [2023-08-27 00:11:53,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1826 transitions, 49990 flow [2023-08-27 00:12:01,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 1826 transitions, 49386 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 00:12:01,270 INFO L231 Difference]: Finished difference. Result has 465 places, 1790 transitions, 46158 flow [2023-08-27 00:12:01,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44747, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46158, PETRI_PLACES=465, PETRI_TRANSITIONS=1790} [2023-08-27 00:12:01,271 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 436 predicate places. [2023-08-27 00:12:01,272 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 1790 transitions, 46158 flow [2023-08-27 00:12:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:01,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:12:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:12:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-27 00:12:01,272 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:12:01,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:12:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1968589468, now seen corresponding path program 26 times [2023-08-27 00:12:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:12:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427758233] [2023-08-27 00:12:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:12:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:12:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:12:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:12:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427758233] [2023-08-27 00:12:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427758233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:12:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:12:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:12:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132519515] [2023-08-27 00:12:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:12:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:12:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:12:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:12:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:12:01,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:12:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1790 transitions, 46158 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:12:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:12:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:12:08,661 INFO L124 PetriNetUnfolderBase]: 11619/17069 cut-off events. [2023-08-27 00:12:08,662 INFO L125 PetriNetUnfolderBase]: For 661327/661327 co-relation queries the response was YES. [2023-08-27 00:12:08,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181297 conditions, 17069 events. 11619/17069 cut-off events. For 661327/661327 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 104986 event pairs, 2199 based on Foata normal form. 40/17109 useless extension candidates. Maximal degree in co-relation 180782. Up to 14941 conditions per place. [2023-08-27 00:12:08,914 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1498 selfloop transitions, 386 changer transitions 0/1884 dead transitions. [2023-08-27 00:12:08,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1884 transitions, 51270 flow [2023-08-27 00:12:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:12:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:12:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 00:12:08,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 00:12:08,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 00:12:08,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 00:12:08,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:12:08,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 00:12:08,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:08,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:08,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:08,917 INFO L175 Difference]: Start difference. First operand has 465 places, 1790 transitions, 46158 flow. Second operand 7 states and 603 transitions. [2023-08-27 00:12:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1884 transitions, 51270 flow [2023-08-27 00:12:17,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1884 transitions, 50744 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-27 00:12:17,186 INFO L231 Difference]: Finished difference. Result has 471 places, 1795 transitions, 46721 flow [2023-08-27 00:12:17,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=45613, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46721, PETRI_PLACES=471, PETRI_TRANSITIONS=1795} [2023-08-27 00:12:17,188 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 442 predicate places. [2023-08-27 00:12:17,188 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 1795 transitions, 46721 flow [2023-08-27 00:12:17,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:17,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:12:17,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:12:17,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 00:12:17,188 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:12:17,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:12:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1259520142, now seen corresponding path program 27 times [2023-08-27 00:12:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:12:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806603171] [2023-08-27 00:12:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:12:17,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:12:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:12:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:12:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806603171] [2023-08-27 00:12:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806603171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:12:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:12:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:12:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569124206] [2023-08-27 00:12:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:12:17,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:12:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:12:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:12:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:12:17,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:12:17,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1795 transitions, 46721 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:17,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:12:17,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:12:17,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:12:24,457 INFO L124 PetriNetUnfolderBase]: 11597/17047 cut-off events. [2023-08-27 00:12:24,458 INFO L125 PetriNetUnfolderBase]: For 668031/668031 co-relation queries the response was YES. [2023-08-27 00:12:24,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181982 conditions, 17047 events. 11597/17047 cut-off events. For 668031/668031 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 104972 event pairs, 2312 based on Foata normal form. 22/17069 useless extension candidates. Maximal degree in co-relation 181474. Up to 15662 conditions per place. [2023-08-27 00:12:24,701 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1519 selfloop transitions, 312 changer transitions 0/1831 dead transitions. [2023-08-27 00:12:24,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1831 transitions, 50851 flow [2023-08-27 00:12:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:12:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:12:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 00:12:24,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 00:12:24,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 00:12:24,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 00:12:24,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:12:24,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 00:12:24,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:24,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:24,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:24,705 INFO L175 Difference]: Start difference. First operand has 471 places, 1795 transitions, 46721 flow. Second operand 7 states and 598 transitions. [2023-08-27 00:12:24,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1831 transitions, 50851 flow [2023-08-27 00:12:32,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1831 transitions, 50179 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-27 00:12:32,462 INFO L231 Difference]: Finished difference. Result has 476 places, 1798 transitions, 46782 flow [2023-08-27 00:12:32,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46049, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46782, PETRI_PLACES=476, PETRI_TRANSITIONS=1798} [2023-08-27 00:12:32,464 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 447 predicate places. [2023-08-27 00:12:32,464 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1798 transitions, 46782 flow [2023-08-27 00:12:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:32,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:12:32,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:12:32,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 00:12:32,464 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:12:32,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:12:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash -780133370, now seen corresponding path program 28 times [2023-08-27 00:12:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:12:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932315044] [2023-08-27 00:12:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:12:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:12:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:12:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:12:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932315044] [2023-08-27 00:12:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932315044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:12:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617724062] [2023-08-27 00:12:32,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:12:32,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:12:32,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:12:32,563 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) [2023-08-27 00:12:32,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:12:32,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:12:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:12:32,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:12:32,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:12:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:32,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:12:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617724062] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:12:33,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:12:33,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-08-27 00:12:33,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307530831] [2023-08-27 00:12:33,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:12:33,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:12:33,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:12:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:12:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:12:33,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:12:33,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1798 transitions, 46782 flow. Second operand has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:33,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:12:33,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:12:33,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:12:41,225 INFO L124 PetriNetUnfolderBase]: 11931/17577 cut-off events. [2023-08-27 00:12:41,225 INFO L125 PetriNetUnfolderBase]: For 677335/677335 co-relation queries the response was YES. [2023-08-27 00:12:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186526 conditions, 17577 events. 11931/17577 cut-off events. For 677335/677335 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 109196 event pairs, 1733 based on Foata normal form. 36/17613 useless extension candidates. Maximal degree in co-relation 186016. Up to 13321 conditions per place. [2023-08-27 00:12:41,475 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1289 selfloop transitions, 835 changer transitions 0/2124 dead transitions. [2023-08-27 00:12:41,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 2124 transitions, 56361 flow [2023-08-27 00:12:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 00:12:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 00:12:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1934 transitions. [2023-08-27 00:12:41,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425629290617849 [2023-08-27 00:12:41,478 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1934 transitions. [2023-08-27 00:12:41,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1934 transitions. [2023-08-27 00:12:41,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:12:41,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1934 transitions. [2023-08-27 00:12:41,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.08695652173913) internal successors, (1934), 23 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:41,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:41,482 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:41,482 INFO L175 Difference]: Start difference. First operand has 476 places, 1798 transitions, 46782 flow. Second operand 23 states and 1934 transitions. [2023-08-27 00:12:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 2124 transitions, 56361 flow [2023-08-27 00:12:50,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 2124 transitions, 55666 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-27 00:12:50,071 INFO L231 Difference]: Finished difference. Result has 508 places, 1969 transitions, 52251 flow [2023-08-27 00:12:50,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46107, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=681, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1028, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=52251, PETRI_PLACES=508, PETRI_TRANSITIONS=1969} [2023-08-27 00:12:50,072 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 479 predicate places. [2023-08-27 00:12:50,072 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1969 transitions, 52251 flow [2023-08-27 00:12:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:50,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:12:50,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:12:50,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:12:50,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:12:50,273 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:12:50,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:12:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash -14970567, now seen corresponding path program 8 times [2023-08-27 00:12:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:12:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683260907] [2023-08-27 00:12:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:12:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:12:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:12:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:50,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:12:50,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683260907] [2023-08-27 00:12:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683260907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:12:50,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101910997] [2023-08-27 00:12:50,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:12:50,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:12:50,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:12:50,381 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) [2023-08-27 00:12:50,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:12:50,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:12:50,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:12:50,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:12:50,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:12:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:50,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:12:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101910997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:12:50,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:12:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 00:12:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470846491] [2023-08-27 00:12:50,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:12:50,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:12:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:12:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:12:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:12:50,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:12:50,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1969 transitions, 52251 flow. Second operand has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:50,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:12:50,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:12:50,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:13:01,021 INFO L124 PetriNetUnfolderBase]: 14714/21456 cut-off events. [2023-08-27 00:13:01,021 INFO L125 PetriNetUnfolderBase]: For 888739/888739 co-relation queries the response was YES. [2023-08-27 00:13:01,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232076 conditions, 21456 events. 14714/21456 cut-off events. For 888739/888739 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 134256 event pairs, 1897 based on Foata normal form. 20/21476 useless extension candidates. Maximal degree in co-relation 231520. Up to 10115 conditions per place. [2023-08-27 00:13:01,418 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1595 selfloop transitions, 1000 changer transitions 0/2595 dead transitions. [2023-08-27 00:13:01,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 2595 transitions, 69912 flow [2023-08-27 00:13:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 00:13:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 00:13:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2107 transitions. [2023-08-27 00:13:01,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435789473684211 [2023-08-27 00:13:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2107 transitions. [2023-08-27 00:13:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2107 transitions. [2023-08-27 00:13:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:13:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2107 transitions. [2023-08-27 00:13:01,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 84.28) internal successors, (2107), 25 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:01,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:01,428 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:01,428 INFO L175 Difference]: Start difference. First operand has 508 places, 1969 transitions, 52251 flow. Second operand 25 states and 2107 transitions. [2023-08-27 00:13:01,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 2595 transitions, 69912 flow [2023-08-27 00:13:13,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2595 transitions, 69193 flow, removed 264 selfloop flow, removed 5 redundant places. [2023-08-27 00:13:13,806 INFO L231 Difference]: Finished difference. Result has 541 places, 2246 transitions, 62080 flow [2023-08-27 00:13:13,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=51582, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=744, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=62080, PETRI_PLACES=541, PETRI_TRANSITIONS=2246} [2023-08-27 00:13:13,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 512 predicate places. [2023-08-27 00:13:13,808 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2246 transitions, 62080 flow [2023-08-27 00:13:13,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:13,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:13:13,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:13:13,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 00:13:14,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:13:14,009 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:13:14,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:13:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 985467564, now seen corresponding path program 29 times [2023-08-27 00:13:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:13:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888741839] [2023-08-27 00:13:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:13:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:13:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:13:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:13:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:13:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888741839] [2023-08-27 00:13:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888741839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:13:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:13:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:13:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783744616] [2023-08-27 00:13:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:13:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:13:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:13:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:13:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:13:14,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:13:14,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2246 transitions, 62080 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:14,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:13:14,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:13:14,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:13:25,098 INFO L124 PetriNetUnfolderBase]: 14734/21492 cut-off events. [2023-08-27 00:13:25,098 INFO L125 PetriNetUnfolderBase]: For 993233/993233 co-relation queries the response was YES. [2023-08-27 00:13:25,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243687 conditions, 21492 events. 14734/21492 cut-off events. For 993233/993233 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 134886 event pairs, 2901 based on Foata normal form. 16/21508 useless extension candidates. Maximal degree in co-relation 243139. Up to 19669 conditions per place. [2023-08-27 00:13:25,695 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1887 selfloop transitions, 389 changer transitions 0/2276 dead transitions. [2023-08-27 00:13:25,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 2276 transitions, 67128 flow [2023-08-27 00:13:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:13:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:13:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 00:13:25,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 00:13:25,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 00:13:25,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 00:13:25,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:13:25,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 00:13:25,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:25,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:25,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:25,698 INFO L175 Difference]: Start difference. First operand has 541 places, 2246 transitions, 62080 flow. Second operand 7 states and 594 transitions. [2023-08-27 00:13:25,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 2276 transitions, 67128 flow [2023-08-27 00:13:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 2276 transitions, 66447 flow, removed 277 selfloop flow, removed 2 redundant places. [2023-08-27 00:13:39,885 INFO L231 Difference]: Finished difference. Result has 546 places, 2250 transitions, 62363 flow [2023-08-27 00:13:39,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61401, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62363, PETRI_PLACES=546, PETRI_TRANSITIONS=2250} [2023-08-27 00:13:39,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 517 predicate places. [2023-08-27 00:13:39,887 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 2250 transitions, 62363 flow [2023-08-27 00:13:39,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:39,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:13:39,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:13:39,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 00:13:39,888 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:13:39,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:13:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash -964801567, now seen corresponding path program 9 times [2023-08-27 00:13:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:13:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961136606] [2023-08-27 00:13:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:13:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:13:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:13:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:13:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:13:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961136606] [2023-08-27 00:13:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961136606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:13:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697125250] [2023-08-27 00:13:39,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:13:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:13:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:13:39,993 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) [2023-08-27 00:13:39,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:13:40,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:13:40,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:13:40,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:13:40,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:13:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:13:40,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:13:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:13:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697125250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:13:40,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:13:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 00:13:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852256186] [2023-08-27 00:13:40,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:13:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:13:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:13:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:13:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:13:40,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 190 [2023-08-27 00:13:40,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 2250 transitions, 62363 flow. Second operand has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:40,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:13:40,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 190 [2023-08-27 00:13:40,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:13:51,858 INFO L124 PetriNetUnfolderBase]: 14893/21789 cut-off events. [2023-08-27 00:13:51,859 INFO L125 PetriNetUnfolderBase]: For 994838/994838 co-relation queries the response was YES. [2023-08-27 00:13:52,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245703 conditions, 21789 events. 14893/21789 cut-off events. For 994838/994838 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 137370 event pairs, 980 based on Foata normal form. 8/21797 useless extension candidates. Maximal degree in co-relation 245163. Up to 10737 conditions per place. [2023-08-27 00:13:52,685 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 1649 selfloop transitions, 867 changer transitions 0/2516 dead transitions. [2023-08-27 00:13:52,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2516 transitions, 72107 flow [2023-08-27 00:13:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:13:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:13:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1207 transitions. [2023-08-27 00:13:52,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42350877192982456 [2023-08-27 00:13:52,687 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1207 transitions. [2023-08-27 00:13:52,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1207 transitions. [2023-08-27 00:13:52,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:13:52,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1207 transitions. [2023-08-27 00:13:52,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.46666666666667) internal successors, (1207), 15 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:52,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:52,691 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:52,691 INFO L175 Difference]: Start difference. First operand has 546 places, 2250 transitions, 62363 flow. Second operand 15 states and 1207 transitions. [2023-08-27 00:13:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2516 transitions, 72107 flow [2023-08-27 00:14:07,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2516 transitions, 71306 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 00:14:07,172 INFO L231 Difference]: Finished difference. Result has 557 places, 2259 transitions, 64507 flow [2023-08-27 00:14:07,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61456, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=64507, PETRI_PLACES=557, PETRI_TRANSITIONS=2259} [2023-08-27 00:14:07,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 528 predicate places. [2023-08-27 00:14:07,174 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 2259 transitions, 64507 flow [2023-08-27 00:14:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:07,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:14:07,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:14:07,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 00:14:07,377 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,SelfDestructingSolverStorable53 [2023-08-27 00:14:07,377 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:14:07,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:14:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1928307793, now seen corresponding path program 10 times [2023-08-27 00:14:07,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:14:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730952825] [2023-08-27 00:14:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:14:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:14:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:14:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:14:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:14:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730952825] [2023-08-27 00:14:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730952825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:14:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:14:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:14:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467276371] [2023-08-27 00:14:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:14:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:14:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:14:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:14:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:14:07,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:14:07,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 2259 transitions, 64507 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:07,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:14:07,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:14:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:14:18,890 INFO L124 PetriNetUnfolderBase]: 14897/21846 cut-off events. [2023-08-27 00:14:18,890 INFO L125 PetriNetUnfolderBase]: For 1091404/1091404 co-relation queries the response was YES. [2023-08-27 00:14:19,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251188 conditions, 21846 events. 14897/21846 cut-off events. For 1091404/1091404 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 138819 event pairs, 2616 based on Foata normal form. 36/21882 useless extension candidates. Maximal degree in co-relation 250643. Up to 18193 conditions per place. [2023-08-27 00:14:19,566 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1759 selfloop transitions, 553 changer transitions 13/2325 dead transitions. [2023-08-27 00:14:19,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2325 transitions, 70286 flow [2023-08-27 00:14:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:14:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:14:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 00:14:19,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 00:14:19,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 00:14:19,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 00:14:19,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:14:19,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 00:14:19,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:19,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:19,569 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:19,569 INFO L175 Difference]: Start difference. First operand has 557 places, 2259 transitions, 64507 flow. Second operand 7 states and 603 transitions. [2023-08-27 00:14:19,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2325 transitions, 70286 flow [2023-08-27 00:14:34,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 2325 transitions, 69306 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-27 00:14:34,893 INFO L231 Difference]: Finished difference. Result has 556 places, 2267 transitions, 65018 flow [2023-08-27 00:14:34,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63547, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65018, PETRI_PLACES=556, PETRI_TRANSITIONS=2267} [2023-08-27 00:14:34,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 527 predicate places. [2023-08-27 00:14:34,895 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2267 transitions, 65018 flow [2023-08-27 00:14:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:34,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:14:34,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:14:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-27 00:14:34,895 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:14:34,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:14:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 628653514, now seen corresponding path program 16 times [2023-08-27 00:14:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:14:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307243372] [2023-08-27 00:14:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:14:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:14:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:14:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:14:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:14:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307243372] [2023-08-27 00:14:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307243372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:14:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:14:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:14:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253404539] [2023-08-27 00:14:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:14:34,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:14:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:14:34,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:14:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:14:34,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:14:34,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2267 transitions, 65018 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:34,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:14:34,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:14:34,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:14:46,696 INFO L124 PetriNetUnfolderBase]: 14897/21918 cut-off events. [2023-08-27 00:14:46,696 INFO L125 PetriNetUnfolderBase]: For 1059539/1059539 co-relation queries the response was YES. [2023-08-27 00:14:46,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253144 conditions, 21918 events. 14897/21918 cut-off events. For 1059539/1059539 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140160 event pairs, 2260 based on Foata normal form. 44/21962 useless extension candidates. Maximal degree in co-relation 252612. Up to 15697 conditions per place. [2023-08-27 00:14:47,312 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1613 selfloop transitions, 769 changer transitions 9/2391 dead transitions. [2023-08-27 00:14:47,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 2391 transitions, 72267 flow [2023-08-27 00:14:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:14:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:14:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-08-27 00:14:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2023-08-27 00:14:47,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-08-27 00:14:47,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-08-27 00:14:47,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:14:47,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-08-27 00:14:47,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:47,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:47,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:14:47,315 INFO L175 Difference]: Start difference. First operand has 556 places, 2267 transitions, 65018 flow. Second operand 7 states and 595 transitions. [2023-08-27 00:14:47,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 2391 transitions, 72267 flow [2023-08-27 00:15:02,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 2391 transitions, 71127 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 00:15:02,486 INFO L231 Difference]: Finished difference. Result has 560 places, 2285 transitions, 66293 flow [2023-08-27 00:15:02,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63908, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66293, PETRI_PLACES=560, PETRI_TRANSITIONS=2285} [2023-08-27 00:15:02,488 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 531 predicate places. [2023-08-27 00:15:02,488 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 2285 transitions, 66293 flow [2023-08-27 00:15:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:02,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:15:02,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:15:02,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-27 00:15:02,488 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:15:02,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:15:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1272576036, now seen corresponding path program 30 times [2023-08-27 00:15:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:15:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666792362] [2023-08-27 00:15:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:15:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:15:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:15:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:15:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:15:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666792362] [2023-08-27 00:15:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666792362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:15:02,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:15:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:15:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191545442] [2023-08-27 00:15:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:15:02,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:15:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:15:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:15:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:15:02,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:15:02,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2285 transitions, 66293 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:02,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:15:02,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:15:02,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:15:14,810 INFO L124 PetriNetUnfolderBase]: 14973/21989 cut-off events. [2023-08-27 00:15:14,810 INFO L125 PetriNetUnfolderBase]: For 1105332/1105332 co-relation queries the response was YES. [2023-08-27 00:15:15,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256924 conditions, 21989 events. 14973/21989 cut-off events. For 1105332/1105332 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140233 event pairs, 2671 based on Foata normal form. 30/22019 useless extension candidates. Maximal degree in co-relation 256611. Up to 18422 conditions per place. [2023-08-27 00:15:15,326 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1739 selfloop transitions, 634 changer transitions 0/2373 dead transitions. [2023-08-27 00:15:15,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 2373 transitions, 72653 flow [2023-08-27 00:15:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:15:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:15:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 00:15:15,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 00:15:15,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 00:15:15,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 00:15:15,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:15:15,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 00:15:15,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:15,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:15,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:15,330 INFO L175 Difference]: Start difference. First operand has 560 places, 2285 transitions, 66293 flow. Second operand 7 states and 605 transitions. [2023-08-27 00:15:15,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 2373 transitions, 72653 flow [2023-08-27 00:15:30,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 2373 transitions, 71031 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-27 00:15:30,299 INFO L231 Difference]: Finished difference. Result has 563 places, 2309 transitions, 67121 flow [2023-08-27 00:15:30,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=64692, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67121, PETRI_PLACES=563, PETRI_TRANSITIONS=2309} [2023-08-27 00:15:30,300 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 534 predicate places. [2023-08-27 00:15:30,300 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 2309 transitions, 67121 flow [2023-08-27 00:15:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:30,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:15:30,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:15:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-27 00:15:30,301 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:15:30,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:15:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1076895340, now seen corresponding path program 31 times [2023-08-27 00:15:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:15:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322923639] [2023-08-27 00:15:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:15:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:15:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:15:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:15:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:15:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322923639] [2023-08-27 00:15:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322923639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:15:30,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:15:30,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:15:30,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758487902] [2023-08-27 00:15:30,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:15:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:15:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:15:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:15:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:15:30,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:15:30,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 2309 transitions, 67121 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:30,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:15:30,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:15:30,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:15:43,472 INFO L124 PetriNetUnfolderBase]: 14959/21941 cut-off events. [2023-08-27 00:15:43,472 INFO L125 PetriNetUnfolderBase]: For 1083433/1083433 co-relation queries the response was YES. [2023-08-27 00:15:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256486 conditions, 21941 events. 14959/21941 cut-off events. For 1083433/1083433 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 139600 event pairs, 2642 based on Foata normal form. 24/21965 useless extension candidates. Maximal degree in co-relation 255925. Up to 18159 conditions per place. [2023-08-27 00:15:44,454 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1719 selfloop transitions, 660 changer transitions 0/2379 dead transitions. [2023-08-27 00:15:44,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2379 transitions, 72882 flow [2023-08-27 00:15:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:15:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:15:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 00:15:44,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 00:15:44,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 00:15:44,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 00:15:44,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:15:44,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 00:15:44,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:44,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:44,458 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:44,458 INFO L175 Difference]: Start difference. First operand has 563 places, 2309 transitions, 67121 flow. Second operand 7 states and 607 transitions. [2023-08-27 00:15:44,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2379 transitions, 72882 flow [2023-08-27 00:15:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 2379 transitions, 72255 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-08-27 00:15:59,287 INFO L231 Difference]: Finished difference. Result has 568 places, 2313 transitions, 68030 flow [2023-08-27 00:15:59,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66500, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68030, PETRI_PLACES=568, PETRI_TRANSITIONS=2313} [2023-08-27 00:15:59,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 539 predicate places. [2023-08-27 00:15:59,289 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 2313 transitions, 68030 flow [2023-08-27 00:15:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:59,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:15:59,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:15:59,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 00:15:59,289 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:15:59,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:15:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -619196296, now seen corresponding path program 32 times [2023-08-27 00:15:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:15:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278542692] [2023-08-27 00:15:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:15:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:15:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:15:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:15:59,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:15:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278542692] [2023-08-27 00:15:59,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278542692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:15:59,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:15:59,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:15:59,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338376401] [2023-08-27 00:15:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:15:59,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:15:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:15:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:15:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:15:59,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:15:59,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 2313 transitions, 68030 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:15:59,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:15:59,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:15:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:11,436 INFO L124 PetriNetUnfolderBase]: 14958/21942 cut-off events. [2023-08-27 00:16:11,436 INFO L125 PetriNetUnfolderBase]: For 1108617/1108617 co-relation queries the response was YES. [2023-08-27 00:16:11,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257107 conditions, 21942 events. 14958/21942 cut-off events. For 1108617/1108617 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 139702 event pairs, 2697 based on Foata normal form. 2/21944 useless extension candidates. Maximal degree in co-relation 256545. Up to 18372 conditions per place. [2023-08-27 00:16:12,313 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1780 selfloop transitions, 559 changer transitions 2/2341 dead transitions. [2023-08-27 00:16:12,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2341 transitions, 73096 flow [2023-08-27 00:16:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:16:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:16:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 00:16:12,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 00:16:12,314 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 00:16:12,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 00:16:12,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:12,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 00:16:12,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:12,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:12,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:12,316 INFO L175 Difference]: Start difference. First operand has 568 places, 2313 transitions, 68030 flow. Second operand 7 states and 590 transitions. [2023-08-27 00:16:12,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2341 transitions, 73096 flow [2023-08-27 00:16:26,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 2341 transitions, 72031 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-27 00:16:27,039 INFO L231 Difference]: Finished difference. Result has 569 places, 2313 transitions, 68087 flow [2023-08-27 00:16:27,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66967, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68087, PETRI_PLACES=569, PETRI_TRANSITIONS=2313} [2023-08-27 00:16:27,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 540 predicate places. [2023-08-27 00:16:27,040 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 2313 transitions, 68087 flow [2023-08-27 00:16:27,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:27,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:27,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-27 00:16:27,041 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:16:27,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1081632670, now seen corresponding path program 33 times [2023-08-27 00:16:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:27,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383922677] [2023-08-27 00:16:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:27,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:27,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383922677] [2023-08-27 00:16:27,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383922677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:27,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:16:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602176849] [2023-08-27 00:16:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:16:27,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:16:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:16:27,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:16:27,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 2313 transitions, 68087 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:27,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:27,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:16:27,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:39,499 INFO L124 PetriNetUnfolderBase]: 15089/22182 cut-off events. [2023-08-27 00:16:39,499 INFO L125 PetriNetUnfolderBase]: For 1117406/1117406 co-relation queries the response was YES. [2023-08-27 00:16:39,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260291 conditions, 22182 events. 15089/22182 cut-off events. For 1117406/1117406 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 141727 event pairs, 1595 based on Foata normal form. 18/22200 useless extension candidates. Maximal degree in co-relation 259852. Up to 10593 conditions per place. [2023-08-27 00:16:40,030 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1730 selfloop transitions, 810 changer transitions 7/2547 dead transitions. [2023-08-27 00:16:40,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2547 transitions, 78200 flow [2023-08-27 00:16:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:16:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:16:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 00:16:40,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 00:16:40,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 00:16:40,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 00:16:40,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:40,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 00:16:40,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,034 INFO L175 Difference]: Start difference. First operand has 569 places, 2313 transitions, 68087 flow. Second operand 7 states and 600 transitions. [2023-08-27 00:16:40,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2547 transitions, 78200 flow [2023-08-27 00:16:56,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 2547 transitions, 76634 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-27 00:16:56,236 INFO L231 Difference]: Finished difference. Result has 574 places, 2345 transitions, 69924 flow [2023-08-27 00:16:56,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66640, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69924, PETRI_PLACES=574, PETRI_TRANSITIONS=2345} [2023-08-27 00:16:56,237 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 545 predicate places. [2023-08-27 00:16:56,238 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 2345 transitions, 69924 flow [2023-08-27 00:16:56,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:56,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:56,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:56,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-27 00:16:56,238 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:16:56,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1755131736, now seen corresponding path program 17 times [2023-08-27 00:16:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:56,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849492605] [2023-08-27 00:16:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:56,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849492605] [2023-08-27 00:16:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849492605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737309150] [2023-08-27 00:16:56,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:16:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:56,333 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) [2023-08-27 00:16:56,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 00:16:56,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:16:56,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:56,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:16:56,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:56,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737309150] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:16:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 00:16:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305014346] [2023-08-27 00:16:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:16:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:56,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:16:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:16:56,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 00:16:56,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2345 transitions, 69924 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:56,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:56,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 00:16:56,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:09,385 INFO L124 PetriNetUnfolderBase]: 14922/21915 cut-off events. [2023-08-27 00:17:09,385 INFO L125 PetriNetUnfolderBase]: For 1170835/1171286 co-relation queries the response was YES. [2023-08-27 00:17:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260895 conditions, 21915 events. 14922/21915 cut-off events. For 1170835/1171286 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 140061 event pairs, 1962 based on Foata normal form. 321/22159 useless extension candidates. Maximal degree in co-relation 260622. Up to 12905 conditions per place. [2023-08-27 00:17:09,863 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 1869 selfloop transitions, 500 changer transitions 0/2429 dead transitions. [2023-08-27 00:17:09,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 2429 transitions, 75922 flow [2023-08-27 00:17:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:17:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:17:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-08-27 00:17:09,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-27 00:17:09,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-08-27 00:17:09,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-08-27 00:17:09,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:09,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-08-27 00:17:09,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:09,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:09,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:09,866 INFO L175 Difference]: Start difference. First operand has 574 places, 2345 transitions, 69924 flow. Second operand 6 states and 544 transitions. [2023-08-27 00:17:09,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 2429 transitions, 75922 flow [2023-08-27 00:17:25,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 2429 transitions, 74408 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-08-27 00:17:25,435 INFO L231 Difference]: Finished difference. Result has 573 places, 2347 transitions, 69599 flow [2023-08-27 00:17:25,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=68362, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69599, PETRI_PLACES=573, PETRI_TRANSITIONS=2347} [2023-08-27 00:17:25,436 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 544 predicate places. [2023-08-27 00:17:25,436 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 2347 transitions, 69599 flow [2023-08-27 00:17:25,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:25,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:25,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:25,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 00:17:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:17:25,637 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:17:25,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2146327266, now seen corresponding path program 34 times [2023-08-27 00:17:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816198985] [2023-08-27 00:17:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816198985] [2023-08-27 00:17:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816198985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:17:25,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:17:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:17:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049221421] [2023-08-27 00:17:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:17:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:17:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:17:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:17:25,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:17:25,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 2347 transitions, 69599 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:25,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:25,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:17:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:17:38,431 INFO L124 PetriNetUnfolderBase]: 15075/22143 cut-off events. [2023-08-27 00:17:38,431 INFO L125 PetriNetUnfolderBase]: For 1142045/1142045 co-relation queries the response was YES. [2023-08-27 00:17:38,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261271 conditions, 22143 events. 15075/22143 cut-off events. For 1142045/1142045 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 141485 event pairs, 2693 based on Foata normal form. 8/22151 useless extension candidates. Maximal degree in co-relation 260715. Up to 18482 conditions per place. [2023-08-27 00:17:38,887 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1788 selfloop transitions, 594 changer transitions 0/2382 dead transitions. [2023-08-27 00:17:38,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 2382 transitions, 74895 flow [2023-08-27 00:17:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:17:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:17:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 00:17:38,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 00:17:38,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 00:17:38,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 00:17:38,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:17:38,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 00:17:38,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:38,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:38,890 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:38,890 INFO L175 Difference]: Start difference. First operand has 573 places, 2347 transitions, 69599 flow. Second operand 7 states and 594 transitions. [2023-08-27 00:17:38,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 2382 transitions, 74895 flow [2023-08-27 00:17:55,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 2382 transitions, 74379 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-27 00:17:55,805 INFO L231 Difference]: Finished difference. Result has 575 places, 2349 transitions, 70345 flow [2023-08-27 00:17:55,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69085, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70345, PETRI_PLACES=575, PETRI_TRANSITIONS=2349} [2023-08-27 00:17:55,807 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 546 predicate places. [2023-08-27 00:17:55,807 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 2349 transitions, 70345 flow [2023-08-27 00:17:55,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:55,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:17:55,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:17:55,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-27 00:17:55,807 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:17:55,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:17:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -645454056, now seen corresponding path program 35 times [2023-08-27 00:17:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:17:55,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085252204] [2023-08-27 00:17:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:17:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:17:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:17:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:17:55,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:17:55,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085252204] [2023-08-27 00:17:55,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085252204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:17:55,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:17:55,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:17:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573704762] [2023-08-27 00:17:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:17:55,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:17:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:17:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:17:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:17:55,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:17:55,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 2349 transitions, 70345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:17:55,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:17:55,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:17:55,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:18:08,634 INFO L124 PetriNetUnfolderBase]: 15073/22141 cut-off events. [2023-08-27 00:18:08,634 INFO L125 PetriNetUnfolderBase]: For 1150491/1150491 co-relation queries the response was YES. [2023-08-27 00:18:08,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263989 conditions, 22141 events. 15073/22141 cut-off events. For 1150491/1150491 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 141566 event pairs, 2691 based on Foata normal form. 2/22143 useless extension candidates. Maximal degree in co-relation 263423. Up to 18474 conditions per place. [2023-08-27 00:18:09,099 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1779 selfloop transitions, 596 changer transitions 2/2377 dead transitions. [2023-08-27 00:18:09,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 2377 transitions, 75496 flow [2023-08-27 00:18:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:18:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:18:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 00:18:09,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 00:18:09,101 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 00:18:09,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 00:18:09,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:18:09,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 00:18:09,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:09,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:09,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:09,103 INFO L175 Difference]: Start difference. First operand has 575 places, 2349 transitions, 70345 flow. Second operand 7 states and 590 transitions. [2023-08-27 00:18:09,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 2377 transitions, 75496 flow [2023-08-27 00:18:24,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 2377 transitions, 74873 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 00:18:24,573 INFO L231 Difference]: Finished difference. Result has 578 places, 2349 transitions, 70922 flow [2023-08-27 00:18:24,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69670, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70922, PETRI_PLACES=578, PETRI_TRANSITIONS=2349} [2023-08-27 00:18:24,574 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 549 predicate places. [2023-08-27 00:18:24,574 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 2349 transitions, 70922 flow [2023-08-27 00:18:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:24,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:18:24,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:18:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-27 00:18:24,575 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 00:18:24,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:18:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1813801420, now seen corresponding path program 36 times [2023-08-27 00:18:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:18:24,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703044517] [2023-08-27 00:18:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:18:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:18:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:18:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:18:24,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:18:24,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703044517] [2023-08-27 00:18:24,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703044517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:18:24,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:18:24,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:18:24,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651436454] [2023-08-27 00:18:24,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:18:24,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:18:24,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:18:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:18:24,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:18:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 00:18:24,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 2349 transitions, 70922 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:18:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 00:18:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:18:37,307 INFO L124 PetriNetUnfolderBase]: 15129/22250 cut-off events. [2023-08-27 00:18:37,307 INFO L125 PetriNetUnfolderBase]: For 1189626/1189626 co-relation queries the response was YES. [2023-08-27 00:18:37,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265665 conditions, 22250 events. 15129/22250 cut-off events. For 1189626/1189626 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 142707 event pairs, 2637 based on Foata normal form. 20/22270 useless extension candidates. Maximal degree in co-relation 265098. Up to 18426 conditions per place. [2023-08-27 00:18:37,921 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1749 selfloop transitions, 667 changer transitions 5/2421 dead transitions. [2023-08-27 00:18:37,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2421 transitions, 77199 flow [2023-08-27 00:18:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:18:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:18:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 00:18:37,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 00:18:37,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 00:18:37,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 00:18:37,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:18:37,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 00:18:37,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:37,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:37,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:18:37,924 INFO L175 Difference]: Start difference. First operand has 578 places, 2349 transitions, 70922 flow. Second operand 7 states and 597 transitions. [2023-08-27 00:18:37,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2421 transitions, 77199 flow Received shutdown request... [2023-08-27 00:18:47,338 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 00:18:47,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-27 00:18:47,338 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 00:18:47,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 00:18:47,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 00:18:47,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 00:18:47,340 INFO L445 BasicCegarLoop]: Path program histogram: [36, 17, 10, 1] [2023-08-27 00:18:47,341 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:18:47,341 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:18:47,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:18:47 BasicIcfg [2023-08-27 00:18:47,343 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:18:47,344 INFO L158 Benchmark]: Toolchain (without parser) took 783958.12ms. Allocated memory was 346.0MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 322.6MB in the beginning and 8.9GB in the end (delta: -8.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-27 00:18:47,344 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 346.0MB. Free memory is still 322.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:18:47,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.22ms. Allocated memory is still 346.0MB. Free memory was 322.1MB in the beginning and 311.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 00:18:47,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.55ms. Allocated memory is still 346.0MB. Free memory was 311.3MB in the beginning and 309.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:18:47,345 INFO L158 Benchmark]: Boogie Preprocessor took 35.70ms. Allocated memory is still 346.0MB. Free memory was 309.8MB in the beginning and 308.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:18:47,345 INFO L158 Benchmark]: RCFGBuilder took 344.89ms. Allocated memory is still 346.0MB. Free memory was 308.3MB in the beginning and 294.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:18:47,345 INFO L158 Benchmark]: TraceAbstraction took 783233.28ms. Allocated memory was 346.0MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 294.1MB in the beginning and 8.9GB in the end (delta: -8.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-27 00:18:47,346 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-08-27 00:18:47,349 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 Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 346.0MB. Free memory is still 322.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 288.22ms. Allocated memory is still 346.0MB. Free memory was 322.1MB in the beginning and 311.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.55ms. Allocated memory is still 346.0MB. Free memory was 311.3MB in the beginning and 309.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.70ms. Allocated memory is still 346.0MB. Free memory was 309.8MB in the beginning and 308.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 344.89ms. Allocated memory is still 346.0MB. Free memory was 308.3MB in the beginning and 294.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 783233.28ms. Allocated memory was 346.0MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 294.1MB in the beginning and 8.9GB in the end (delta: -8.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 98 PlacesBefore, 29 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 1467 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1467, independent: 1467, independent conditional: 0, independent unconditional: 1467, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 809, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1467, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 809, unknown conditional: 0, unknown unconditional: 809] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, 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: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: 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: 74]: 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 7 procedures, 136 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 783.1s, OverallIterations: 64, TraceHistogramMax: 1, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 757.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2936 SdHoareTripleChecker+Valid, 14.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2936 mSDsluCounter, 1813 SdHoareTripleChecker+Invalid, 11.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1319 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22764 IncrementalHoareTripleChecker+Invalid, 22934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 494 mSDtfsCounter, 22764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1432 GetRequests, 778 SyntacticMatches, 25 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2692 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70922occurred in iteration=63, InterpolantAutomatonStates: 612, 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, 1.8s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 1699 NumberOfCodeBlocks, 1699 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 2013 ConstructedInterpolants, 0 QuantifiedInterpolants, 11607 SizeOfPredicates, 106 NumberOfNonLiveVariables, 3339 ConjunctsInSsa, 281 ConjunctsInUnsatCore, 106 InterpolantComputations, 50 PerfectInterpolantSequences, 49/105 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