/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 14:58:01,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 14:58:01,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 14:58:01,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 14:58:01,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 14:58:01,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 14:58:01,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 14:58:01,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 14:58:01,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 14:58:01,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 14:58:01,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 14:58:01,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 14:58:01,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 14:58:01,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 14:58:01,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 14:58:01,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 14:58:01,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 14:58:01,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 14:58:01,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 14:58:01,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 14:58:01,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 14:58:01,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 14:58:01,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 14:58:01,990 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 14:58:01,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 14:58:01,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:58:01,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 14:58:01,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 14:58:01,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 14:58:01,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 14:58:01,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 14:58:01,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 14:58:01,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 14:58:02,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 14:58:02,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 14:58:02,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 14:58:02,233 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 14:58:02,235 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 14:58:02,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-11-17 14:58:03,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 14:58:03,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 14:58:03,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-11-17 14:58:03,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb4f2d45/87b87a4bd0474482a19b6f782f7e6275/FLAG00f29bd25 [2023-11-17 14:58:03,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb4f2d45/87b87a4bd0474482a19b6f782f7e6275 [2023-11-17 14:58:03,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 14:58:03,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 14:58:03,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 14:58:03,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 14:58:03,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 14:58:03,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:58:03" (1/1) ... [2023-11-17 14:58:03,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553d4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:03, skipping insertion in model container [2023-11-17 14:58:03,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:58:03" (1/1) ... [2023-11-17 14:58:03,768 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 14:58:04,137 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-11-17 14:58:04,147 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-11-17 14:58:04,153 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-11-17 14:58:04,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:58:04,179 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 14:58:04,245 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-11-17 14:58:04,247 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-11-17 14:58:04,249 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-11-17 14:58:04,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:58:04,326 INFO L206 MainTranslator]: Completed translation [2023-11-17 14:58:04,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04 WrapperNode [2023-11-17 14:58:04,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 14:58:04,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 14:58:04,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 14:58:04,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 14:58:04,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,402 INFO L138 Inliner]: procedures = 275, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-17 14:58:04,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 14:58:04,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 14:58:04,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 14:58:04,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 14:58:04,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 14:58:04,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 14:58:04,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 14:58:04,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 14:58:04,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (1/1) ... [2023-11-17 14:58:04,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:58:04,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:58:04,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 14:58:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 14:58:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 14:58:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 14:58:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 14:58:04,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 14:58:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 14:58:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 14:58:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 14:58:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 14:58:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 14:58:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 14:58:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 14:58:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 14:58:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 14:58:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 14:58:04,518 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 14:58:04,657 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 14:58:04,659 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 14:58:04,949 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 14:58:04,977 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 14:58:04,977 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 14:58:04,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:58:04 BoogieIcfgContainer [2023-11-17 14:58:04,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 14:58:04,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 14:58:04,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 14:58:04,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 14:58:04,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:58:03" (1/3) ... [2023-11-17 14:58:04,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336ff1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:58:04, skipping insertion in model container [2023-11-17 14:58:04,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:58:04" (2/3) ... [2023-11-17 14:58:04,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336ff1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:58:04, skipping insertion in model container [2023-11-17 14:58:04,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:58:04" (3/3) ... [2023-11-17 14:58:04,985 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-11-17 14:58:05,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 14:58:05,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-17 14:58:05,000 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 14:58:05,122 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 14:58:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 273 transitions, 560 flow [2023-11-17 14:58:05,293 INFO L124 PetriNetUnfolderBase]: 15/271 cut-off events. [2023-11-17 14:58:05,293 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:58:05,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 15/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 377 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-17 14:58:05,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 273 transitions, 560 flow [2023-11-17 14:58:05,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 261 transitions, 531 flow [2023-11-17 14:58:05,321 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 14:58:05,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 261 transitions, 531 flow [2023-11-17 14:58:05,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 261 transitions, 531 flow [2023-11-17 14:58:05,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 261 transitions, 531 flow [2023-11-17 14:58:05,397 INFO L124 PetriNetUnfolderBase]: 15/261 cut-off events. [2023-11-17 14:58:05,397 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 14:58:05,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 261 events. 15/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 339 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-17 14:58:05,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 17694 [2023-11-17 14:58:12,482 INFO L134 LiptonReduction]: Checked pairs total: 32926 [2023-11-17 14:58:12,482 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-11-17 14:58:12,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 14:58:12,510 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28b4bf2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 14:58:12,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 14:58:12,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 14:58:12,512 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-17 14:58:12,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:58:12,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:12,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 14:58:12,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:12,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1090, now seen corresponding path program 1 times [2023-11-17 14:58:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792785786] [2023-11-17 14:58:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:12,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792785786] [2023-11-17 14:58:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792785786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 14:58:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220728232] [2023-11-17 14:58:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 14:58:12,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 14:58:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 14:58:12,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 511 [2023-11-17 14:58:12,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:12,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:12,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 511 [2023-11-17 14:58:12,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:12,940 INFO L124 PetriNetUnfolderBase]: 1605/2644 cut-off events. [2023-11-17 14:58:12,940 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-17 14:58:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 2644 events. 1605/2644 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11720 event pairs, 1293 based on Foata normal form. 34/2250 useless extension candidates. Maximal degree in co-relation 5054. Up to 2493 conditions per place. [2023-11-17 14:58:12,953 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 54 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-11-17 14:58:12,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 235 flow [2023-11-17 14:58:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 14:58:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 14:58:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 565 transitions. [2023-11-17 14:58:12,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528375733855186 [2023-11-17 14:58:12,968 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 565 transitions. [2023-11-17 14:58:12,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 565 transitions. [2023-11-17 14:58:12,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:12,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 565 transitions. [2023-11-17 14:58:12,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 282.5) internal successors, (565), 2 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:12,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:12,981 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:12,982 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 133 flow. Second operand 2 states and 565 transitions. [2023-11-17 14:58:12,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 235 flow [2023-11-17 14:58:12,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 14:58:12,988 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 122 flow [2023-11-17 14:58:12,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-17 14:58:12,992 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-17 14:58:12,992 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 122 flow [2023-11-17 14:58:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:12,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:12,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 14:58:12,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:12,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2080006196, now seen corresponding path program 1 times [2023-11-17 14:58:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016396137] [2023-11-17 14:58:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:13,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:13,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016396137] [2023-11-17 14:58:13,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016396137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:13,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:13,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 14:58:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271085144] [2023-11-17 14:58:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:13,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:58:13,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:58:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:58:13,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 511 [2023-11-17 14:58:13,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:13,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 511 [2023-11-17 14:58:13,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:13,472 INFO L124 PetriNetUnfolderBase]: 1569/2616 cut-off events. [2023-11-17 14:58:13,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:58:13,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 2616 events. 1569/2616 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11840 event pairs, 1245 based on Foata normal form. 0/2222 useless extension candidates. Maximal degree in co-relation 5129. Up to 2339 conditions per place. [2023-11-17 14:58:13,485 INFO L140 encePairwiseOnDemand]: 507/511 looper letters, 70 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-17 14:58:13,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 308 flow [2023-11-17 14:58:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:58:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:58:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-11-17 14:58:13,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335942596216569 [2023-11-17 14:58:13,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-11-17 14:58:13,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-11-17 14:58:13,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:13,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-11-17 14:58:13,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,498 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 122 flow. Second operand 3 states and 818 transitions. [2023-11-17 14:58:13,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 308 flow [2023-11-17 14:58:13,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 14:58:13,501 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 126 flow [2023-11-17 14:58:13,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-17 14:58:13,502 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-11-17 14:58:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 126 flow [2023-11-17 14:58:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:13,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 14:58:13,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:13,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -625924937, now seen corresponding path program 1 times [2023-11-17 14:58:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:13,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847909957] [2023-11-17 14:58:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:13,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847909957] [2023-11-17 14:58:13,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847909957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:13,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:13,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 14:58:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112493455] [2023-11-17 14:58:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:13,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:58:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:58:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:58:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 511 [2023-11-17 14:58:13,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 511 [2023-11-17 14:58:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:13,925 INFO L124 PetriNetUnfolderBase]: 1303/2224 cut-off events. [2023-11-17 14:58:13,925 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 14:58:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 2224 events. 1303/2224 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8742 event pairs, 675 based on Foata normal form. 56/1888 useless extension candidates. Maximal degree in co-relation 4479. Up to 1239 conditions per place. [2023-11-17 14:58:13,935 INFO L140 encePairwiseOnDemand]: 507/511 looper letters, 75 selfloop transitions, 3 changer transitions 1/83 dead transitions. [2023-11-17 14:58:13,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 337 flow [2023-11-17 14:58:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:58:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:58:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2023-11-17 14:58:13,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375081539465101 [2023-11-17 14:58:13,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2023-11-17 14:58:13,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2023-11-17 14:58:13,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:13,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2023-11-17 14:58:13,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,944 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 126 flow. Second operand 3 states and 824 transitions. [2023-11-17 14:58:13,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 337 flow [2023-11-17 14:58:13,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 14:58:13,948 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 135 flow [2023-11-17 14:58:13,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-17 14:58:13,949 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-11-17 14:58:13,949 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 135 flow [2023-11-17 14:58:13,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:13,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:13,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:13,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 14:58:13,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:13,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1725700690, now seen corresponding path program 1 times [2023-11-17 14:58:13,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:13,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737227993] [2023-11-17 14:58:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737227993] [2023-11-17 14:58:14,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737227993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:14,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:14,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 14:58:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392642647] [2023-11-17 14:58:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:14,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 14:58:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 14:58:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 14:58:14,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 511 [2023-11-17 14:58:14,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 511 [2023-11-17 14:58:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:14,717 INFO L124 PetriNetUnfolderBase]: 1363/2285 cut-off events. [2023-11-17 14:58:14,718 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 14:58:14,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 conditions, 2285 events. 1363/2285 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8755 event pairs, 1045 based on Foata normal form. 0/1886 useless extension candidates. Maximal degree in co-relation 4660. Up to 2179 conditions per place. [2023-11-17 14:58:14,727 INFO L140 encePairwiseOnDemand]: 505/511 looper letters, 58 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-17 14:58:14,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 287 flow [2023-11-17 14:58:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 14:58:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 14:58:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1026 transitions. [2023-11-17 14:58:14,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015655577299413 [2023-11-17 14:58:14,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1026 transitions. [2023-11-17 14:58:14,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1026 transitions. [2023-11-17 14:58:14,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:14,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1026 transitions. [2023-11-17 14:58:14,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:14,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:14,738 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:14,738 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 135 flow. Second operand 5 states and 1026 transitions. [2023-11-17 14:58:14,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 287 flow [2023-11-17 14:58:14,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:58:14,742 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 177 flow [2023-11-17 14:58:14,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-17 14:58:14,744 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-11-17 14:58:14,744 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 177 flow [2023-11-17 14:58:14,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:14,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:14,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 14:58:14,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1188649210, now seen corresponding path program 1 times [2023-11-17 14:58:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:14,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052312691] [2023-11-17 14:58:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052312691] [2023-11-17 14:58:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052312691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:15,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:15,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 14:58:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697557589] [2023-11-17 14:58:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 14:58:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 14:58:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 14:58:15,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 511 [2023-11-17 14:58:15,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:15,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:15,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 511 [2023-11-17 14:58:15,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:15,405 INFO L124 PetriNetUnfolderBase]: 1566/2620 cut-off events. [2023-11-17 14:58:15,405 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-11-17 14:58:15,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 2620 events. 1566/2620 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10494 event pairs, 365 based on Foata normal form. 11/2195 useless extension candidates. Maximal degree in co-relation 5483. Up to 2145 conditions per place. [2023-11-17 14:58:15,418 INFO L140 encePairwiseOnDemand]: 503/511 looper letters, 81 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2023-11-17 14:58:15,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 447 flow [2023-11-17 14:58:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 14:58:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 14:58:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1027 transitions. [2023-11-17 14:58:15,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40195694716242664 [2023-11-17 14:58:15,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1027 transitions. [2023-11-17 14:58:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1027 transitions. [2023-11-17 14:58:15,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:15,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1027 transitions. [2023-11-17 14:58:15,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.4) internal successors, (1027), 5 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:15,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:15,429 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:15,430 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 177 flow. Second operand 5 states and 1027 transitions. [2023-11-17 14:58:15,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 447 flow [2023-11-17 14:58:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 14:58:15,433 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 241 flow [2023-11-17 14:58:15,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-11-17 14:58:15,433 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-11-17 14:58:15,434 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 241 flow [2023-11-17 14:58:15,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:15,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:15,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:15,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 14:58:15,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:15,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash -600368028, now seen corresponding path program 2 times [2023-11-17 14:58:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866181582] [2023-11-17 14:58:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866181582] [2023-11-17 14:58:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866181582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:16,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:16,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 14:58:16,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865764679] [2023-11-17 14:58:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 14:58:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 14:58:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 14:58:16,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 511 [2023-11-17 14:58:16,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 241 flow. Second operand has 9 states, 9 states have (on average 179.44444444444446) internal successors, (1615), 9 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:16,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:16,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 511 [2023-11-17 14:58:16,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:16,638 INFO L124 PetriNetUnfolderBase]: 1747/2921 cut-off events. [2023-11-17 14:58:16,639 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2023-11-17 14:58:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 2921 events. 1747/2921 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12069 event pairs, 426 based on Foata normal form. 0/2419 useless extension candidates. Maximal degree in co-relation 6332. Up to 1910 conditions per place. [2023-11-17 14:58:16,654 INFO L140 encePairwiseOnDemand]: 500/511 looper letters, 113 selfloop transitions, 14 changer transitions 8/140 dead transitions. [2023-11-17 14:58:16,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 670 flow [2023-11-17 14:58:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 14:58:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 14:58:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1907 transitions. [2023-11-17 14:58:16,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37318982387475536 [2023-11-17 14:58:16,659 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1907 transitions. [2023-11-17 14:58:16,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1907 transitions. [2023-11-17 14:58:16,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:16,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1907 transitions. [2023-11-17 14:58:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.7) internal successors, (1907), 10 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:16,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 511.0) internal successors, (5621), 11 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:16,671 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 511.0) internal successors, (5621), 11 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:16,671 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 241 flow. Second operand 10 states and 1907 transitions. [2023-11-17 14:58:16,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 670 flow [2023-11-17 14:58:16,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 668 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 14:58:16,676 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 301 flow [2023-11-17 14:58:16,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=301, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-11-17 14:58:16,676 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-11-17 14:58:16,677 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 301 flow [2023-11-17 14:58:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.44444444444446) internal successors, (1615), 9 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:16,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:16,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 14:58:16,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:16,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash -404757533, now seen corresponding path program 1 times [2023-11-17 14:58:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:16,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415096090] [2023-11-17 14:58:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:17,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:17,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415096090] [2023-11-17 14:58:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415096090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:17,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:17,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 14:58:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290062609] [2023-11-17 14:58:17,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 14:58:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 14:58:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 14:58:17,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 511 [2023-11-17 14:58:17,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 301 flow. Second operand has 9 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:17,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:17,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 511 [2023-11-17 14:58:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:17,831 INFO L124 PetriNetUnfolderBase]: 1746/2918 cut-off events. [2023-11-17 14:58:17,831 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2023-11-17 14:58:17,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 2918 events. 1746/2918 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12004 event pairs, 1311 based on Foata normal form. 0/2417 useless extension candidates. Maximal degree in co-relation 6649. Up to 2802 conditions per place. [2023-11-17 14:58:17,853 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 73 selfloop transitions, 17 changer transitions 1/96 dead transitions. [2023-11-17 14:58:17,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 550 flow [2023-11-17 14:58:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:58:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:58:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1692 transitions. [2023-11-17 14:58:17,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3679060665362035 [2023-11-17 14:58:17,858 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1692 transitions. [2023-11-17 14:58:17,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1692 transitions. [2023-11-17 14:58:17,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:17,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1692 transitions. [2023-11-17 14:58:17,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.0) internal successors, (1692), 9 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) [2023-11-17 14:58:17,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:17,869 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:17,869 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 301 flow. Second operand 9 states and 1692 transitions. [2023-11-17 14:58:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 550 flow [2023-11-17 14:58:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 538 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 14:58:17,874 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 398 flow [2023-11-17 14:58:17,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=398, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-11-17 14:58:17,875 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-11-17 14:58:17,875 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 398 flow [2023-11-17 14:58:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:17,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:17,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 14:58:17,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:17,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -936030837, now seen corresponding path program 1 times [2023-11-17 14:58:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105910293] [2023-11-17 14:58:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105910293] [2023-11-17 14:58:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105910293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:18,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:18,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:58:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096324953] [2023-11-17 14:58:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:58:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:58:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:58:18,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:58:18,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:18,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:18,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:58:18,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:19,134 INFO L124 PetriNetUnfolderBase]: 1692/2836 cut-off events. [2023-11-17 14:58:19,134 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2023-11-17 14:58:19,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6576 conditions, 2836 events. 1692/2836 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11691 event pairs, 469 based on Foata normal form. 22/2365 useless extension candidates. Maximal degree in co-relation 6556. Up to 1915 conditions per place. [2023-11-17 14:58:19,152 INFO L140 encePairwiseOnDemand]: 498/511 looper letters, 99 selfloop transitions, 25 changer transitions 10/139 dead transitions. [2023-11-17 14:58:19,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 776 flow [2023-11-17 14:58:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:58:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:58:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1689 transitions. [2023-11-17 14:58:19,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36725375081539463 [2023-11-17 14:58:19,158 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1689 transitions. [2023-11-17 14:58:19,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1689 transitions. [2023-11-17 14:58:19,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:19,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1689 transitions. [2023-11-17 14:58:19,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.66666666666666) internal successors, (1689), 9 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:19,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:19,170 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:19,170 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 398 flow. Second operand 9 states and 1689 transitions. [2023-11-17 14:58:19,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 776 flow [2023-11-17 14:58:19,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 706 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-11-17 14:58:19,175 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 396 flow [2023-11-17 14:58:19,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-17 14:58:19,178 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 29 predicate places. [2023-11-17 14:58:19,178 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 396 flow [2023-11-17 14:58:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:19,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:19,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 14:58:19,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:19,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash 338358155, now seen corresponding path program 2 times [2023-11-17 14:58:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663614025] [2023-11-17 14:58:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:19,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663614025] [2023-11-17 14:58:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663614025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:58:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725983812] [2023-11-17 14:58:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:19,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:58:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:19,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:58:19,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:58:19,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:58:19,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 396 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:19,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:19,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:58:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:20,437 INFO L124 PetriNetUnfolderBase]: 1774/2983 cut-off events. [2023-11-17 14:58:20,437 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-11-17 14:58:20,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6949 conditions, 2983 events. 1774/2983 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12551 event pairs, 532 based on Foata normal form. 0/2446 useless extension candidates. Maximal degree in co-relation 6931. Up to 1710 conditions per place. [2023-11-17 14:58:20,450 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 99 selfloop transitions, 29 changer transitions 8/141 dead transitions. [2023-11-17 14:58:20,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 809 flow [2023-11-17 14:58:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:58:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:58:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1685 transitions. [2023-11-17 14:58:20,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663839965209828 [2023-11-17 14:58:20,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1685 transitions. [2023-11-17 14:58:20,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1685 transitions. [2023-11-17 14:58:20,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:20,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1685 transitions. [2023-11-17 14:58:20,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.22222222222223) internal successors, (1685), 9 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:20,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:20,468 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 396 flow. Second operand 9 states and 1685 transitions. [2023-11-17 14:58:20,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 809 flow [2023-11-17 14:58:20,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 768 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-17 14:58:20,476 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 450 flow [2023-11-17 14:58:20,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-11-17 14:58:20,477 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-11-17 14:58:20,477 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 450 flow [2023-11-17 14:58:20,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:20,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:20,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 14:58:20,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:20,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 337406765, now seen corresponding path program 3 times [2023-11-17 14:58:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869508567] [2023-11-17 14:58:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:20,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:20,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869508567] [2023-11-17 14:58:20,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869508567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:20,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:20,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:58:20,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756899393] [2023-11-17 14:58:20,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:20,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:58:20,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:58:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:58:20,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:58:20,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:20,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:20,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:58:20,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:21,634 INFO L124 PetriNetUnfolderBase]: 1758/2955 cut-off events. [2023-11-17 14:58:21,635 INFO L125 PetriNetUnfolderBase]: For 883/883 co-relation queries the response was YES. [2023-11-17 14:58:21,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 2955 events. 1758/2955 cut-off events. For 883/883 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12362 event pairs, 536 based on Foata normal form. 11/2444 useless extension candidates. Maximal degree in co-relation 6995. Up to 1710 conditions per place. [2023-11-17 14:58:21,647 INFO L140 encePairwiseOnDemand]: 500/511 looper letters, 97 selfloop transitions, 28 changer transitions 10/139 dead transitions. [2023-11-17 14:58:21,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 139 transitions, 840 flow [2023-11-17 14:58:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:58:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:58:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1683 transitions. [2023-11-17 14:58:21,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3659491193737769 [2023-11-17 14:58:21,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1683 transitions. [2023-11-17 14:58:21,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1683 transitions. [2023-11-17 14:58:21,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:21,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1683 transitions. [2023-11-17 14:58:21,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,662 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,662 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 450 flow. Second operand 9 states and 1683 transitions. [2023-11-17 14:58:21,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 139 transitions, 840 flow [2023-11-17 14:58:21,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 139 transitions, 800 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 14:58:21,667 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 457 flow [2023-11-17 14:58:21,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-11-17 14:58:21,668 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-11-17 14:58:21,668 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 457 flow [2023-11-17 14:58:21,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:21,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:21,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 14:58:21,669 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1534944864, now seen corresponding path program 1 times [2023-11-17 14:58:21,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:21,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532932586] [2023-11-17 14:58:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:21,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:21,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532932586] [2023-11-17 14:58:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532932586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:21,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:21,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 14:58:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738740420] [2023-11-17 14:58:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:21,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:58:21,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:21,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:58:21,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:58:21,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 511 [2023-11-17 14:58:21,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:21,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 511 [2023-11-17 14:58:21,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:21,934 INFO L124 PetriNetUnfolderBase]: 806/1499 cut-off events. [2023-11-17 14:58:21,935 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2023-11-17 14:58:21,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 1499 events. 806/1499 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6172 event pairs, 181 based on Foata normal form. 4/1349 useless extension candidates. Maximal degree in co-relation 3748. Up to 1165 conditions per place. [2023-11-17 14:58:21,942 INFO L140 encePairwiseOnDemand]: 503/511 looper letters, 74 selfloop transitions, 10 changer transitions 1/93 dead transitions. [2023-11-17 14:58:21,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 662 flow [2023-11-17 14:58:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:58:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:58:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-11-17 14:58:21,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251141552511416 [2023-11-17 14:58:21,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-11-17 14:58:21,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-11-17 14:58:21,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:21,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-11-17 14:58:21,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,949 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 457 flow. Second operand 3 states and 805 transitions. [2023-11-17 14:58:21,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 662 flow [2023-11-17 14:58:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 606 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 14:58:21,954 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 421 flow [2023-11-17 14:58:21,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-11-17 14:58:21,955 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2023-11-17 14:58:21,955 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 421 flow [2023-11-17 14:58:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:21,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:21,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:21,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 14:58:21,955 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:21,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -425536316, now seen corresponding path program 1 times [2023-11-17 14:58:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025824758] [2023-11-17 14:58:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:22,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:22,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025824758] [2023-11-17 14:58:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025824758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:22,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:58:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270627789] [2023-11-17 14:58:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:58:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:58:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:58:22,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 511 [2023-11-17 14:58:22,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 421 flow. Second operand has 14 states, 14 states have (on average 170.42857142857142) internal successors, (2386), 14 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:22,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:22,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 511 [2023-11-17 14:58:22,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:23,470 INFO L124 PetriNetUnfolderBase]: 869/1603 cut-off events. [2023-11-17 14:58:23,471 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2023-11-17 14:58:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 1603 events. 869/1603 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6517 event pairs, 460 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 4055. Up to 952 conditions per place. [2023-11-17 14:58:23,479 INFO L140 encePairwiseOnDemand]: 493/511 looper letters, 104 selfloop transitions, 37 changer transitions 19/164 dead transitions. [2023-11-17 14:58:23,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 164 transitions, 975 flow [2023-11-17 14:58:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 14:58:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 14:58:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2835 transitions. [2023-11-17 14:58:23,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467465753424658 [2023-11-17 14:58:23,487 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2835 transitions. [2023-11-17 14:58:23,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2835 transitions. [2023-11-17 14:58:23,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:23,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2835 transitions. [2023-11-17 14:58:23,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 177.1875) internal successors, (2835), 16 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:23,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 511.0) internal successors, (8687), 17 states have internal predecessors, (8687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:23,504 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 511.0) internal successors, (8687), 17 states have internal predecessors, (8687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:23,505 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 421 flow. Second operand 16 states and 2835 transitions. [2023-11-17 14:58:23,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 164 transitions, 975 flow [2023-11-17 14:58:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 956 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:58:23,510 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 557 flow [2023-11-17 14:58:23,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=557, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2023-11-17 14:58:23,511 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 47 predicate places. [2023-11-17 14:58:23,511 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 557 flow [2023-11-17 14:58:23,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 170.42857142857142) internal successors, (2386), 14 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:23,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:23,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:23,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 14:58:23,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:23,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1818020138, now seen corresponding path program 2 times [2023-11-17 14:58:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613479509] [2023-11-17 14:58:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613479509] [2023-11-17 14:58:25,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613479509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:58:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467612704] [2023-11-17 14:58:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:25,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:58:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:58:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:58:25,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 511 [2023-11-17 14:58:25,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 557 flow. Second operand has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:25,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:25,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 511 [2023-11-17 14:58:25,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:26,452 INFO L124 PetriNetUnfolderBase]: 1284/2378 cut-off events. [2023-11-17 14:58:26,453 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2023-11-17 14:58:26,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6073 conditions, 2378 events. 1284/2378 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11085 event pairs, 405 based on Foata normal form. 0/2270 useless extension candidates. Maximal degree in co-relation 6047. Up to 739 conditions per place. [2023-11-17 14:58:26,467 INFO L140 encePairwiseOnDemand]: 491/511 looper letters, 155 selfloop transitions, 50 changer transitions 18/227 dead transitions. [2023-11-17 14:58:26,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 227 transitions, 1362 flow [2023-11-17 14:58:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 14:58:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 14:58:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3657 transitions. [2023-11-17 14:58:26,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35782778864970644 [2023-11-17 14:58:26,478 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3657 transitions. [2023-11-17 14:58:26,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3657 transitions. [2023-11-17 14:58:26,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:26,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3657 transitions. [2023-11-17 14:58:26,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 182.85) internal successors, (3657), 20 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:26,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 511.0) internal successors, (10731), 21 states have internal predecessors, (10731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:26,502 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 511.0) internal successors, (10731), 21 states have internal predecessors, (10731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:26,502 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 557 flow. Second operand 20 states and 3657 transitions. [2023-11-17 14:58:26,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 227 transitions, 1362 flow [2023-11-17 14:58:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 227 transitions, 1291 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-17 14:58:26,510 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 692 flow [2023-11-17 14:58:26,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=692, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-11-17 14:58:26,511 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 61 predicate places. [2023-11-17 14:58:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 692 flow [2023-11-17 14:58:26,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.42857142857142) internal successors, (2456), 14 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:26,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 14:58:26,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1084446978, now seen corresponding path program 3 times [2023-11-17 14:58:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022776796] [2023-11-17 14:58:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022776796] [2023-11-17 14:58:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022776796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:27,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:27,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:58:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972796975] [2023-11-17 14:58:27,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:27,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:58:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:58:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:58:27,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 511 [2023-11-17 14:58:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 692 flow. Second operand has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 511 [2023-11-17 14:58:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:27,987 INFO L124 PetriNetUnfolderBase]: 1083/2008 cut-off events. [2023-11-17 14:58:27,987 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2023-11-17 14:58:27,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2008 events. 1083/2008 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8610 event pairs, 259 based on Foata normal form. 14/1937 useless extension candidates. Maximal degree in co-relation 5475. Up to 962 conditions per place. [2023-11-17 14:58:28,000 INFO L140 encePairwiseOnDemand]: 495/511 looper letters, 107 selfloop transitions, 39 changer transitions 16/166 dead transitions. [2023-11-17 14:58:28,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 1153 flow [2023-11-17 14:58:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 14:58:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 14:58:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2337 transitions. [2023-11-17 14:58:28,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3517988860454614 [2023-11-17 14:58:28,006 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2337 transitions. [2023-11-17 14:58:28,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2337 transitions. [2023-11-17 14:58:28,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:28,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2337 transitions. [2023-11-17 14:58:28,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 179.76923076923077) internal successors, (2337), 13 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:28,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 511.0) internal successors, (7154), 14 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:28,020 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 511.0) internal successors, (7154), 14 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:28,020 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 692 flow. Second operand 13 states and 2337 transitions. [2023-11-17 14:58:28,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 1153 flow [2023-11-17 14:58:28,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 1060 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-11-17 14:58:28,032 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 696 flow [2023-11-17 14:58:28,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=696, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2023-11-17 14:58:28,033 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 61 predicate places. [2023-11-17 14:58:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 696 flow [2023-11-17 14:58:28,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:28,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:28,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 14:58:28,034 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:28,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1997078142, now seen corresponding path program 1 times [2023-11-17 14:58:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:28,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643861542] [2023-11-17 14:58:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:28,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:29,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:29,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643861542] [2023-11-17 14:58:29,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643861542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:29,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:58:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760073548] [2023-11-17 14:58:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:58:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:58:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:58:29,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 511 [2023-11-17 14:58:29,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 696 flow. Second operand has 14 states, 14 states have (on average 173.5) internal successors, (2429), 14 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:29,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:29,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 511 [2023-11-17 14:58:29,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:30,421 INFO L124 PetriNetUnfolderBase]: 1530/2816 cut-off events. [2023-11-17 14:58:30,421 INFO L125 PetriNetUnfolderBase]: For 1364/1364 co-relation queries the response was YES. [2023-11-17 14:58:30,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7793 conditions, 2816 events. 1530/2816 cut-off events. For 1364/1364 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13488 event pairs, 617 based on Foata normal form. 8/2693 useless extension candidates. Maximal degree in co-relation 7762. Up to 1349 conditions per place. [2023-11-17 14:58:30,438 INFO L140 encePairwiseOnDemand]: 492/511 looper letters, 128 selfloop transitions, 48 changer transitions 5/185 dead transitions. [2023-11-17 14:58:30,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 185 transitions, 1405 flow [2023-11-17 14:58:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 14:58:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 14:58:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3051 transitions. [2023-11-17 14:58:30,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35121445838609416 [2023-11-17 14:58:30,444 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3051 transitions. [2023-11-17 14:58:30,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3051 transitions. [2023-11-17 14:58:30,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:30,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3051 transitions. [2023-11-17 14:58:30,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 179.47058823529412) internal successors, (3051), 17 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:30,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 511.0) internal successors, (9198), 18 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:30,461 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 511.0) internal successors, (9198), 18 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:30,462 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 696 flow. Second operand 17 states and 3051 transitions. [2023-11-17 14:58:30,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 185 transitions, 1405 flow [2023-11-17 14:58:30,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 185 transitions, 1328 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-17 14:58:30,474 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 967 flow [2023-11-17 14:58:30,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=967, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2023-11-17 14:58:30,475 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 74 predicate places. [2023-11-17 14:58:30,475 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 967 flow [2023-11-17 14:58:30,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 173.5) internal successors, (2429), 14 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:30,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:30,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:30,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 14:58:30,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:30,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1736480614, now seen corresponding path program 2 times [2023-11-17 14:58:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497533280] [2023-11-17 14:58:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497533280] [2023-11-17 14:58:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497533280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-17 14:58:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460385310] [2023-11-17 14:58:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:32,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 14:58:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 14:58:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-17 14:58:32,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 511 [2023-11-17 14:58:32,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 967 flow. Second operand has 15 states, 15 states have (on average 175.33333333333334) internal successors, (2630), 15 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:32,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:32,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 511 [2023-11-17 14:58:32,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:32,783 INFO L124 PetriNetUnfolderBase]: 1677/3087 cut-off events. [2023-11-17 14:58:32,783 INFO L125 PetriNetUnfolderBase]: For 2285/2285 co-relation queries the response was YES. [2023-11-17 14:58:32,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 3087 events. 1677/3087 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14727 event pairs, 266 based on Foata normal form. 8/2948 useless extension candidates. Maximal degree in co-relation 8754. Up to 685 conditions per place. [2023-11-17 14:58:32,803 INFO L140 encePairwiseOnDemand]: 495/511 looper letters, 132 selfloop transitions, 59 changer transitions 17/212 dead transitions. [2023-11-17 14:58:32,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 212 transitions, 1627 flow [2023-11-17 14:58:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 14:58:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 14:58:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2752 transitions. [2023-11-17 14:58:32,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590345727332029 [2023-11-17 14:58:32,808 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2752 transitions. [2023-11-17 14:58:32,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2752 transitions. [2023-11-17 14:58:32,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:32,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2752 transitions. [2023-11-17 14:58:32,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.46666666666667) internal successors, (2752), 15 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:32,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 511.0) internal successors, (8176), 16 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:32,820 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 511.0) internal successors, (8176), 16 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:32,820 INFO L175 Difference]: Start difference. First operand has 133 places, 125 transitions, 967 flow. Second operand 15 states and 2752 transitions. [2023-11-17 14:58:32,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 212 transitions, 1627 flow [2023-11-17 14:58:32,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 212 transitions, 1579 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-17 14:58:32,839 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1113 flow [2023-11-17 14:58:32,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1113, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2023-11-17 14:58:32,840 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 81 predicate places. [2023-11-17 14:58:32,840 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1113 flow [2023-11-17 14:58:32,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.33333333333334) internal successors, (2630), 15 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:32,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:32,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:32,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 14:58:32,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:32,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1501314408, now seen corresponding path program 1 times [2023-11-17 14:58:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:32,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179247960] [2023-11-17 14:58:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179247960] [2023-11-17 14:58:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179247960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:58:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039530294] [2023-11-17 14:58:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:58:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:58:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:58:34,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:34,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1113 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:34,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:34,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:34,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:36,308 INFO L124 PetriNetUnfolderBase]: 1891/3501 cut-off events. [2023-11-17 14:58:36,309 INFO L125 PetriNetUnfolderBase]: For 3919/3919 co-relation queries the response was YES. [2023-11-17 14:58:36,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10451 conditions, 3501 events. 1891/3501 cut-off events. For 3919/3919 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17497 event pairs, 927 based on Foata normal form. 82/3406 useless extension candidates. Maximal degree in co-relation 10413. Up to 2985 conditions per place. [2023-11-17 14:58:36,332 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 186 selfloop transitions, 43 changer transitions 24/257 dead transitions. [2023-11-17 14:58:36,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 257 transitions, 2160 flow [2023-11-17 14:58:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:58:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:58:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4043 transitions. [2023-11-17 14:58:36,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30430528375733856 [2023-11-17 14:58:36,340 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4043 transitions. [2023-11-17 14:58:36,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4043 transitions. [2023-11-17 14:58:36,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:36,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4043 transitions. [2023-11-17 14:58:36,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.5) internal successors, (4043), 26 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:36,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:36,358 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:36,358 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1113 flow. Second operand 26 states and 4043 transitions. [2023-11-17 14:58:36,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 257 transitions, 2160 flow [2023-11-17 14:58:36,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 257 transitions, 2045 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 14:58:36,385 INFO L231 Difference]: Finished difference. Result has 178 places, 169 transitions, 1556 flow [2023-11-17 14:58:36,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1556, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2023-11-17 14:58:36,386 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 119 predicate places. [2023-11-17 14:58:36,386 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 1556 flow [2023-11-17 14:58:36,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:36,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:36,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 14:58:36,387 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:36,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2010640836, now seen corresponding path program 2 times [2023-11-17 14:58:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641303908] [2023-11-17 14:58:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641303908] [2023-11-17 14:58:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641303908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:58:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311008566] [2023-11-17 14:58:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:58:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:58:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:58:38,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:38,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 1556 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:38,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:38,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:38,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:40,195 INFO L124 PetriNetUnfolderBase]: 2156/4022 cut-off events. [2023-11-17 14:58:40,196 INFO L125 PetriNetUnfolderBase]: For 54994/54994 co-relation queries the response was YES. [2023-11-17 14:58:40,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19023 conditions, 4022 events. 2156/4022 cut-off events. For 54994/54994 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21234 event pairs, 898 based on Foata normal form. 122/3931 useless extension candidates. Maximal degree in co-relation 18961. Up to 3291 conditions per place. [2023-11-17 14:58:40,225 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 218 selfloop transitions, 52 changer transitions 24/298 dead transitions. [2023-11-17 14:58:40,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 298 transitions, 3015 flow [2023-11-17 14:58:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:58:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:58:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4039 transitions. [2023-11-17 14:58:40,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3040042149631191 [2023-11-17 14:58:40,231 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4039 transitions. [2023-11-17 14:58:40,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4039 transitions. [2023-11-17 14:58:40,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:40,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4039 transitions. [2023-11-17 14:58:40,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.34615384615384) internal successors, (4039), 26 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:40,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:40,250 INFO L175 Difference]: Start difference. First operand has 178 places, 169 transitions, 1556 flow. Second operand 26 states and 4039 transitions. [2023-11-17 14:58:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 298 transitions, 3015 flow [2023-11-17 14:58:40,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 298 transitions, 2975 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-17 14:58:40,340 INFO L231 Difference]: Finished difference. Result has 226 places, 210 transitions, 2234 flow [2023-11-17 14:58:40,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2234, PETRI_PLACES=226, PETRI_TRANSITIONS=210} [2023-11-17 14:58:40,340 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 167 predicate places. [2023-11-17 14:58:40,340 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 210 transitions, 2234 flow [2023-11-17 14:58:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:40,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:40,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 14:58:40,342 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1201822002, now seen corresponding path program 3 times [2023-11-17 14:58:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575879528] [2023-11-17 14:58:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575879528] [2023-11-17 14:58:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575879528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:42,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:42,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:58:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283025309] [2023-11-17 14:58:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:42,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:58:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:58:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:58:42,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:42,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 210 transitions, 2234 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:42,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:42,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:42,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:44,205 INFO L124 PetriNetUnfolderBase]: 2383/4481 cut-off events. [2023-11-17 14:58:44,206 INFO L125 PetriNetUnfolderBase]: For 181501/181501 co-relation queries the response was YES. [2023-11-17 14:58:44,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27352 conditions, 4481 events. 2383/4481 cut-off events. For 181501/181501 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 24723 event pairs, 1013 based on Foata normal form. 138/4362 useless extension candidates. Maximal degree in co-relation 27266. Up to 3624 conditions per place. [2023-11-17 14:58:44,242 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 254 selfloop transitions, 61 changer transitions 25/344 dead transitions. [2023-11-17 14:58:44,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 344 transitions, 4202 flow [2023-11-17 14:58:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:58:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:58:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4043 transitions. [2023-11-17 14:58:44,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30430528375733856 [2023-11-17 14:58:44,248 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4043 transitions. [2023-11-17 14:58:44,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4043 transitions. [2023-11-17 14:58:44,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:44,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4043 transitions. [2023-11-17 14:58:44,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.5) internal successors, (4043), 26 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:44,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:44,265 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:44,265 INFO L175 Difference]: Start difference. First operand has 226 places, 210 transitions, 2234 flow. Second operand 26 states and 4043 transitions. [2023-11-17 14:58:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 344 transitions, 4202 flow [2023-11-17 14:58:44,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 344 transitions, 4049 flow, removed 72 selfloop flow, removed 1 redundant places. [2023-11-17 14:58:44,494 INFO L231 Difference]: Finished difference. Result has 272 places, 254 transitions, 2973 flow [2023-11-17 14:58:44,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2973, PETRI_PLACES=272, PETRI_TRANSITIONS=254} [2023-11-17 14:58:44,495 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 213 predicate places. [2023-11-17 14:58:44,495 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 254 transitions, 2973 flow [2023-11-17 14:58:44,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:44,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:44,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:44,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 14:58:44,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:44,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:44,498 INFO L85 PathProgramCache]: Analyzing trace with hash 627956086, now seen corresponding path program 4 times [2023-11-17 14:58:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545541530] [2023-11-17 14:58:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:44,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:58:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545541530] [2023-11-17 14:58:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545541530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:58:46,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010241764] [2023-11-17 14:58:46,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:46,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:58:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:58:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:58:46,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:46,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 254 transitions, 2973 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:46,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:46,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:46,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:48,998 INFO L124 PetriNetUnfolderBase]: 2657/5014 cut-off events. [2023-11-17 14:58:48,998 INFO L125 PetriNetUnfolderBase]: For 362191/362191 co-relation queries the response was YES. [2023-11-17 14:58:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37087 conditions, 5014 events. 2657/5014 cut-off events. For 362191/362191 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 28616 event pairs, 1169 based on Foata normal form. 102/4815 useless extension candidates. Maximal degree in co-relation 36978. Up to 4191 conditions per place. [2023-11-17 14:58:49,041 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 295 selfloop transitions, 63 changer transitions 23/385 dead transitions. [2023-11-17 14:58:49,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 385 transitions, 5386 flow [2023-11-17 14:58:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 14:58:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 14:58:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3895 transitions. [2023-11-17 14:58:49,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30489236790606655 [2023-11-17 14:58:49,047 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3895 transitions. [2023-11-17 14:58:49,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3895 transitions. [2023-11-17 14:58:49,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:49,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3895 transitions. [2023-11-17 14:58:49,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 155.8) internal successors, (3895), 25 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:49,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:49,062 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:49,062 INFO L175 Difference]: Start difference. First operand has 272 places, 254 transitions, 2973 flow. Second operand 25 states and 3895 transitions. [2023-11-17 14:58:49,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 385 transitions, 5386 flow [2023-11-17 14:58:49,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 385 transitions, 5079 flow, removed 147 selfloop flow, removed 2 redundant places. [2023-11-17 14:58:49,526 INFO L231 Difference]: Finished difference. Result has 315 places, 295 transitions, 3672 flow [2023-11-17 14:58:49,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3672, PETRI_PLACES=315, PETRI_TRANSITIONS=295} [2023-11-17 14:58:49,527 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 256 predicate places. [2023-11-17 14:58:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 295 transitions, 3672 flow [2023-11-17 14:58:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:58:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:58:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 14:58:49,528 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1799329432, now seen corresponding path program 5 times [2023-11-17 14:58:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143391625] [2023-11-17 14:58:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:00:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:00:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:00:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143391625] [2023-11-17 15:00:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143391625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:00:58,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:00:58,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 15:00:58,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570147765] [2023-11-17 15:00:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:00:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 15:00:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:00:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 15:00:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:00:58,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:00:58,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 295 transitions, 3672 flow. Second operand has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:00:58,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:00:58,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:00:58,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:15,224 INFO L124 PetriNetUnfolderBase]: 3064/5794 cut-off events. [2023-11-17 15:01:15,224 INFO L125 PetriNetUnfolderBase]: For 632174/632174 co-relation queries the response was YES. [2023-11-17 15:01:15,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49004 conditions, 5794 events. 3064/5794 cut-off events. For 632174/632174 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 34756 event pairs, 1237 based on Foata normal form. 102/5520 useless extension candidates. Maximal degree in co-relation 48873. Up to 3833 conditions per place. [2023-11-17 15:01:15,307 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 316 selfloop transitions, 104 changer transitions 33/457 dead transitions. [2023-11-17 15:01:15,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 457 transitions, 7208 flow [2023-11-17 15:01:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 15:01:15,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 15:01:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4518 transitions. [2023-11-17 15:01:15,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30487887171873945 [2023-11-17 15:01:15,321 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4518 transitions. [2023-11-17 15:01:15,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4518 transitions. [2023-11-17 15:01:15,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:15,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4518 transitions. [2023-11-17 15:01:15,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 155.79310344827587) internal successors, (4518), 29 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 511.0) internal successors, (15330), 30 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,348 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 511.0) internal successors, (15330), 30 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,348 INFO L175 Difference]: Start difference. First operand has 315 places, 295 transitions, 3672 flow. Second operand 29 states and 4518 transitions. [2023-11-17 15:01:15,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 457 transitions, 7208 flow [2023-11-17 15:01:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 457 transitions, 6827 flow, removed 184 selfloop flow, removed 2 redundant places. [2023-11-17 15:01:16,326 INFO L231 Difference]: Finished difference. Result has 361 places, 339 transitions, 4546 flow [2023-11-17 15:01:16,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4546, PETRI_PLACES=361, PETRI_TRANSITIONS=339} [2023-11-17 15:01:16,327 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 302 predicate places. [2023-11-17 15:01:16,327 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 339 transitions, 4546 flow [2023-11-17 15:01:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:16,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 15:01:16,328 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:16,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1188559180, now seen corresponding path program 6 times [2023-11-17 15:01:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893726413] [2023-11-17 15:01:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:18,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:18,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893726413] [2023-11-17 15:01:18,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893726413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:18,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:18,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-17 15:01:18,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280839595] [2023-11-17 15:01:18,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:18,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 15:01:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 15:01:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:01:18,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:01:18,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 339 transitions, 4546 flow. Second operand has 23 states, 23 states have (on average 147.56521739130434) internal successors, (3394), 23 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:18,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:01:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:22,410 INFO L124 PetriNetUnfolderBase]: 3750/7029 cut-off events. [2023-11-17 15:01:22,410 INFO L125 PetriNetUnfolderBase]: For 1091409/1091409 co-relation queries the response was YES. [2023-11-17 15:01:22,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68440 conditions, 7029 events. 3750/7029 cut-off events. For 1091409/1091409 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 44041 event pairs, 1201 based on Foata normal form. 116/6644 useless extension candidates. Maximal degree in co-relation 68288. Up to 3774 conditions per place. [2023-11-17 15:01:22,513 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 304 selfloop transitions, 200 changer transitions 40/548 dead transitions. [2023-11-17 15:01:22,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 548 transitions, 9879 flow [2023-11-17 15:01:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:01:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:01:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4929 transitions. [2023-11-17 15:01:22,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30143101761252444 [2023-11-17 15:01:22,520 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4929 transitions. [2023-11-17 15:01:22,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4929 transitions. [2023-11-17 15:01:22,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:22,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4929 transitions. [2023-11-17 15:01:22,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 154.03125) internal successors, (4929), 32 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,540 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,541 INFO L175 Difference]: Start difference. First operand has 361 places, 339 transitions, 4546 flow. Second operand 32 states and 4929 transitions. [2023-11-17 15:01:22,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 548 transitions, 9879 flow [2023-11-17 15:01:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 548 transitions, 9352 flow, removed 239 selfloop flow, removed 5 redundant places. [2023-11-17 15:01:24,114 INFO L231 Difference]: Finished difference. Result has 413 places, 416 transitions, 6364 flow [2023-11-17 15:01:24,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6364, PETRI_PLACES=413, PETRI_TRANSITIONS=416} [2023-11-17 15:01:24,115 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 354 predicate places. [2023-11-17 15:01:24,115 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 416 transitions, 6364 flow [2023-11-17 15:01:24,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 147.56521739130434) internal successors, (3394), 23 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:24,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:24,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 15:01:24,116 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:24,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1160984932, now seen corresponding path program 7 times [2023-11-17 15:01:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:24,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899957408] [2023-11-17 15:01:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899957408] [2023-11-17 15:01:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899957408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:01:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394800766] [2023-11-17 15:01:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:01:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:01:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:01:25,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:01:25,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 416 transitions, 6364 flow. Second operand has 21 states, 21 states have (on average 149.71428571428572) internal successors, (3144), 21 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:25,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:25,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:01:25,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:29,666 INFO L124 PetriNetUnfolderBase]: 3986/7537 cut-off events. [2023-11-17 15:01:29,666 INFO L125 PetriNetUnfolderBase]: For 1539072/1539072 co-relation queries the response was YES. [2023-11-17 15:01:29,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80597 conditions, 7537 events. 3986/7537 cut-off events. For 1539072/1539072 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 48547 event pairs, 1463 based on Foata normal form. 130/7106 useless extension candidates. Maximal degree in co-relation 80419. Up to 4428 conditions per place. [2023-11-17 15:01:29,829 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 407 selfloop transitions, 127 changer transitions 35/573 dead transitions. [2023-11-17 15:01:29,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 573 transitions, 10908 flow [2023-11-17 15:01:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 15:01:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 15:01:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4077 transitions. [2023-11-17 15:01:29,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30686436850820414 [2023-11-17 15:01:29,856 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4077 transitions. [2023-11-17 15:01:29,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4077 transitions. [2023-11-17 15:01:29,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:29,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4077 transitions. [2023-11-17 15:01:29,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 156.80769230769232) internal successors, (4077), 26 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:29,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:29,876 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:29,876 INFO L175 Difference]: Start difference. First operand has 413 places, 416 transitions, 6364 flow. Second operand 26 states and 4077 transitions. [2023-11-17 15:01:29,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 573 transitions, 10908 flow [2023-11-17 15:01:32,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 573 transitions, 10047 flow, removed 412 selfloop flow, removed 6 redundant places. [2023-11-17 15:01:32,744 INFO L231 Difference]: Finished difference. Result has 450 places, 456 transitions, 7103 flow [2023-11-17 15:01:32,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7103, PETRI_PLACES=450, PETRI_TRANSITIONS=456} [2023-11-17 15:01:32,745 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 391 predicate places. [2023-11-17 15:01:32,745 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 456 transitions, 7103 flow [2023-11-17 15:01:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 149.71428571428572) internal successors, (3144), 21 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:32,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:32,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 15:01:32,746 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:32,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 610205818, now seen corresponding path program 8 times [2023-11-17 15:01:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771543324] [2023-11-17 15:01:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771543324] [2023-11-17 15:01:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771543324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:01:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099232804] [2023-11-17 15:01:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:01:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:01:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:01:34,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:01:34,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 456 transitions, 7103 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:34,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:34,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:01:34,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:39,230 INFO L124 PetriNetUnfolderBase]: 4334/8221 cut-off events. [2023-11-17 15:01:39,231 INFO L125 PetriNetUnfolderBase]: For 1624929/1624929 co-relation queries the response was YES. [2023-11-17 15:01:39,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90556 conditions, 8221 events. 4334/8221 cut-off events. For 1624929/1624929 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 54240 event pairs, 1349 based on Foata normal form. 38/7674 useless extension candidates. Maximal degree in co-relation 90362. Up to 4912 conditions per place. [2023-11-17 15:01:39,415 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 391 selfloop transitions, 236 changer transitions 39/670 dead transitions. [2023-11-17 15:01:39,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 670 transitions, 13451 flow [2023-11-17 15:01:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 15:01:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 15:01:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5147 transitions. [2023-11-17 15:01:39,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052244559093874 [2023-11-17 15:01:39,423 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5147 transitions. [2023-11-17 15:01:39,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5147 transitions. [2023-11-17 15:01:39,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:39,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5147 transitions. [2023-11-17 15:01:39,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 155.96969696969697) internal successors, (5147), 33 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:39,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:39,568 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:39,568 INFO L175 Difference]: Start difference. First operand has 450 places, 456 transitions, 7103 flow. Second operand 33 states and 5147 transitions. [2023-11-17 15:01:39,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 670 transitions, 13451 flow [2023-11-17 15:01:42,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 670 transitions, 12410 flow, removed 479 selfloop flow, removed 11 redundant places. [2023-11-17 15:01:42,721 INFO L231 Difference]: Finished difference. Result has 495 places, 532 transitions, 8730 flow [2023-11-17 15:01:42,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8730, PETRI_PLACES=495, PETRI_TRANSITIONS=532} [2023-11-17 15:01:42,722 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 436 predicate places. [2023-11-17 15:01:42,722 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 532 transitions, 8730 flow [2023-11-17 15:01:42,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:42,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:42,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 15:01:42,723 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:42,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -680099292, now seen corresponding path program 9 times [2023-11-17 15:01:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544626462] [2023-11-17 15:01:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544626462] [2023-11-17 15:01:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544626462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:44,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:44,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:01:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214728630] [2023-11-17 15:01:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:44,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:01:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:01:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:01:44,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:01:44,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 532 transitions, 8730 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:44,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:44,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:01:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:49,072 INFO L124 PetriNetUnfolderBase]: 4676/8867 cut-off events. [2023-11-17 15:01:49,072 INFO L125 PetriNetUnfolderBase]: For 2022444/2022444 co-relation queries the response was YES. [2023-11-17 15:01:49,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100009 conditions, 8867 events. 4676/8867 cut-off events. For 2022444/2022444 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 59233 event pairs, 989 based on Foata normal form. 245/8497 useless extension candidates. Maximal degree in co-relation 99796. Up to 3590 conditions per place. [2023-11-17 15:01:49,221 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 316 selfloop transitions, 448 changer transitions 85/853 dead transitions. [2023-11-17 15:01:49,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 853 transitions, 17885 flow [2023-11-17 15:01:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-17 15:01:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-17 15:01:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 6310 transitions. [2023-11-17 15:01:49,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30117894133931555 [2023-11-17 15:01:49,322 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 6310 transitions. [2023-11-17 15:01:49,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 6310 transitions. [2023-11-17 15:01:49,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:49,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 6310 transitions. [2023-11-17 15:01:49,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 153.90243902439025) internal successors, (6310), 41 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 511.0) internal successors, (21462), 42 states have internal predecessors, (21462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,346 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 511.0) internal successors, (21462), 42 states have internal predecessors, (21462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:49,346 INFO L175 Difference]: Start difference. First operand has 495 places, 532 transitions, 8730 flow. Second operand 41 states and 6310 transitions. [2023-11-17 15:01:49,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 853 transitions, 17885 flow [2023-11-17 15:01:53,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 853 transitions, 17145 flow, removed 337 selfloop flow, removed 5 redundant places. [2023-11-17 15:01:53,641 INFO L231 Difference]: Finished difference. Result has 551 places, 656 transitions, 12843 flow [2023-11-17 15:01:53,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=8168, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=12843, PETRI_PLACES=551, PETRI_TRANSITIONS=656} [2023-11-17 15:01:53,642 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 492 predicate places. [2023-11-17 15:01:53,642 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 656 transitions, 12843 flow [2023-11-17 15:01:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:53,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:53,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:53,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 15:01:53,642 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:53,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2124443918, now seen corresponding path program 10 times [2023-11-17 15:01:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:53,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854213502] [2023-11-17 15:01:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:53,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:55,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854213502] [2023-11-17 15:01:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854213502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:55,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:55,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:01:55,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150743917] [2023-11-17 15:01:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:55,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:01:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:01:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:01:55,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:01:55,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 656 transitions, 12843 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:55,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:55,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:01:55,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:00,479 INFO L124 PetriNetUnfolderBase]: 4756/9058 cut-off events. [2023-11-17 15:02:00,479 INFO L125 PetriNetUnfolderBase]: For 2375051/2375051 co-relation queries the response was YES. [2023-11-17 15:02:00,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110636 conditions, 9058 events. 4756/9058 cut-off events. For 2375051/2375051 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 60952 event pairs, 1577 based on Foata normal form. 66/8484 useless extension candidates. Maximal degree in co-relation 110401. Up to 7884 conditions per place. [2023-11-17 15:02:00,720 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 648 selfloop transitions, 104 changer transitions 27/783 dead transitions. [2023-11-17 15:02:00,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 783 transitions, 17654 flow [2023-11-17 15:02:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:02:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:02:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4192 transitions. [2023-11-17 15:02:00,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30383416684786546 [2023-11-17 15:02:00,745 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4192 transitions. [2023-11-17 15:02:00,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4192 transitions. [2023-11-17 15:02:00,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:00,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4192 transitions. [2023-11-17 15:02:00,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 155.25925925925927) internal successors, (4192), 27 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:00,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:00,760 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:00,761 INFO L175 Difference]: Start difference. First operand has 551 places, 656 transitions, 12843 flow. Second operand 27 states and 4192 transitions. [2023-11-17 15:02:00,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 783 transitions, 17654 flow [2023-11-17 15:02:08,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 783 transitions, 15122 flow, removed 1068 selfloop flow, removed 11 redundant places. [2023-11-17 15:02:08,855 INFO L231 Difference]: Finished difference. Result has 586 places, 689 transitions, 11994 flow [2023-11-17 15:02:08,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=10608, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11994, PETRI_PLACES=586, PETRI_TRANSITIONS=689} [2023-11-17 15:02:08,856 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 527 predicate places. [2023-11-17 15:02:08,856 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 689 transitions, 11994 flow [2023-11-17 15:02:08,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:08,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:08,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:02:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 15:02:08,857 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:08,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2001087438, now seen corresponding path program 11 times [2023-11-17 15:02:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984263131] [2023-11-17 15:02:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984263131] [2023-11-17 15:02:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984263131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:02:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:02:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 15:02:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749851270] [2023-11-17 15:02:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:02:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 15:02:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 15:02:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:02:39,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:02:39,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 689 transitions, 11994 flow. Second operand has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:39,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:39,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:02:39,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:58,607 INFO L124 PetriNetUnfolderBase]: 4922/9380 cut-off events. [2023-11-17 15:02:58,607 INFO L125 PetriNetUnfolderBase]: For 2437113/2437113 co-relation queries the response was YES. [2023-11-17 15:02:58,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102337 conditions, 9380 events. 4922/9380 cut-off events. For 2437113/2437113 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 63753 event pairs, 1431 based on Foata normal form. 70/8782 useless extension candidates. Maximal degree in co-relation 102083. Up to 7887 conditions per place. [2023-11-17 15:02:58,786 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 648 selfloop transitions, 135 changer transitions 29/816 dead transitions. [2023-11-17 15:02:58,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 816 transitions, 16793 flow [2023-11-17 15:02:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:02:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:02:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4192 transitions. [2023-11-17 15:02:58,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30383416684786546 [2023-11-17 15:02:58,790 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4192 transitions. [2023-11-17 15:02:58,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4192 transitions. [2023-11-17 15:02:58,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:58,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4192 transitions. [2023-11-17 15:02:58,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 155.25925925925927) internal successors, (4192), 27 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:58,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:58,803 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:02:58,803 INFO L175 Difference]: Start difference. First operand has 586 places, 689 transitions, 11994 flow. Second operand 27 states and 4192 transitions. [2023-11-17 15:02:58,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 816 transitions, 16793 flow [2023-11-17 15:03:04,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 816 transitions, 16139 flow, removed 296 selfloop flow, removed 7 redundant places. [2023-11-17 15:03:05,063 INFO L231 Difference]: Finished difference. Result has 625 places, 721 transitions, 12731 flow [2023-11-17 15:03:05,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=11366, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=12731, PETRI_PLACES=625, PETRI_TRANSITIONS=721} [2023-11-17 15:03:05,064 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 566 predicate places. [2023-11-17 15:03:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 721 transitions, 12731 flow [2023-11-17 15:03:05,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:05,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:05,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 15:03:05,065 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:05,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash 212146420, now seen corresponding path program 12 times [2023-11-17 15:03:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412407724] [2023-11-17 15:03:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412407724] [2023-11-17 15:03:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412407724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-17 15:03:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75643721] [2023-11-17 15:03:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:06,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 15:03:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 15:03:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:03:06,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 511 [2023-11-17 15:03:06,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 721 transitions, 12731 flow. Second operand has 23 states, 23 states have (on average 145.56521739130434) internal successors, (3348), 23 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:06,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:06,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 511 [2023-11-17 15:03:06,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:13,136 INFO L124 PetriNetUnfolderBase]: 5094/9704 cut-off events. [2023-11-17 15:03:13,136 INFO L125 PetriNetUnfolderBase]: For 2793490/2793490 co-relation queries the response was YES. [2023-11-17 15:03:13,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108600 conditions, 9704 events. 5094/9704 cut-off events. For 2793490/2793490 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 66409 event pairs, 1477 based on Foata normal form. 70/9078 useless extension candidates. Maximal degree in co-relation 108327. Up to 5951 conditions per place. [2023-11-17 15:03:13,497 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 630 selfloop transitions, 194 changer transitions 42/870 dead transitions. [2023-11-17 15:03:13,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 870 transitions, 18321 flow [2023-11-17 15:03:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 15:03:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 15:03:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3970 transitions. [2023-11-17 15:03:13,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29881077826283303 [2023-11-17 15:03:13,500 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3970 transitions. [2023-11-17 15:03:13,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3970 transitions. [2023-11-17 15:03:13,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:13,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3970 transitions. [2023-11-17 15:03:13,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 152.69230769230768) internal successors, (3970), 26 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,509 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:13,510 INFO L175 Difference]: Start difference. First operand has 625 places, 721 transitions, 12731 flow. Second operand 26 states and 3970 transitions. [2023-11-17 15:03:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 870 transitions, 18321 flow [2023-11-17 15:03:21,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 870 transitions, 17696 flow, removed 280 selfloop flow, removed 7 redundant places. [2023-11-17 15:03:21,532 INFO L231 Difference]: Finished difference. Result has 662 places, 753 transitions, 13824 flow [2023-11-17 15:03:21,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=12190, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13824, PETRI_PLACES=662, PETRI_TRANSITIONS=753} [2023-11-17 15:03:21,533 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 603 predicate places. [2023-11-17 15:03:21,533 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 753 transitions, 13824 flow [2023-11-17 15:03:21,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 145.56521739130434) internal successors, (3348), 23 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:21,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:21,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 15:03:21,534 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:21,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 759025338, now seen corresponding path program 13 times [2023-11-17 15:03:21,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:21,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255465656] [2023-11-17 15:03:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255465656] [2023-11-17 15:03:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255465656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:03:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910720667] [2023-11-17 15:03:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:23,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:03:23,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:03:23,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:03:23,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:03:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 753 transitions, 13824 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:03:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:29,840 INFO L124 PetriNetUnfolderBase]: 5797/11022 cut-off events. [2023-11-17 15:03:29,840 INFO L125 PetriNetUnfolderBase]: For 3377425/3377425 co-relation queries the response was YES. [2023-11-17 15:03:30,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123474 conditions, 11022 events. 5797/11022 cut-off events. For 3377425/3377425 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 77328 event pairs, 1528 based on Foata normal form. 68/10294 useless extension candidates. Maximal degree in co-relation 123183. Up to 6010 conditions per place. [2023-11-17 15:03:30,372 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 635 selfloop transitions, 321 changer transitions 35/995 dead transitions. [2023-11-17 15:03:30,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 995 transitions, 21156 flow [2023-11-17 15:03:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 15:03:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 15:03:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4062 transitions. [2023-11-17 15:03:30,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3057353605298811 [2023-11-17 15:03:30,377 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4062 transitions. [2023-11-17 15:03:30,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4062 transitions. [2023-11-17 15:03:30,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:30,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4062 transitions. [2023-11-17 15:03:30,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 156.23076923076923) internal successors, (4062), 26 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,387 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:30,387 INFO L175 Difference]: Start difference. First operand has 662 places, 753 transitions, 13824 flow. Second operand 26 states and 4062 transitions. [2023-11-17 15:03:30,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 995 transitions, 21156 flow [2023-11-17 15:03:41,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 995 transitions, 20335 flow, removed 361 selfloop flow, removed 7 redundant places. [2023-11-17 15:03:41,677 INFO L231 Difference]: Finished difference. Result has 699 places, 863 transitions, 16321 flow [2023-11-17 15:03:41,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=13055, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=16321, PETRI_PLACES=699, PETRI_TRANSITIONS=863} [2023-11-17 15:03:41,678 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 640 predicate places. [2023-11-17 15:03:41,678 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 863 transitions, 16321 flow [2023-11-17 15:03:41,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:41,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:41,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:03:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 15:03:41,679 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:41,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 197551396, now seen corresponding path program 14 times [2023-11-17 15:03:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072691452] [2023-11-17 15:03:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:03:43,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:43,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072691452] [2023-11-17 15:03:43,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072691452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:43,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:43,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:03:43,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595827410] [2023-11-17 15:03:43,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:43,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:03:43,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:03:43,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:03:43,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:03:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 863 transitions, 16321 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:43,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:03:43,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:51,912 INFO L124 PetriNetUnfolderBase]: 6239/11841 cut-off events. [2023-11-17 15:03:51,913 INFO L125 PetriNetUnfolderBase]: For 4078526/4078526 co-relation queries the response was YES. [2023-11-17 15:03:52,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141147 conditions, 11841 events. 6239/11841 cut-off events. For 4078526/4078526 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 84412 event pairs, 1350 based on Foata normal form. 64/11041 useless extension candidates. Maximal degree in co-relation 140839. Up to 5267 conditions per place. [2023-11-17 15:03:52,318 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 497 selfloop transitions, 538 changer transitions 55/1094 dead transitions. [2023-11-17 15:03:52,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1094 transitions, 25411 flow [2023-11-17 15:03:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 15:03:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 15:03:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5082 transitions. [2023-11-17 15:03:52,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3013698630136986 [2023-11-17 15:03:52,322 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5082 transitions. [2023-11-17 15:03:52,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5082 transitions. [2023-11-17 15:03:52,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:52,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5082 transitions. [2023-11-17 15:03:52,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 154.0) internal successors, (5082), 33 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,333 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:03:52,333 INFO L175 Difference]: Start difference. First operand has 699 places, 863 transitions, 16321 flow. Second operand 33 states and 5082 transitions. [2023-11-17 15:03:52,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1094 transitions, 25411 flow [2023-11-17 15:04:07,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 1094 transitions, 24549 flow, removed 400 selfloop flow, removed 7 redundant places. [2023-11-17 15:04:07,052 INFO L231 Difference]: Finished difference. Result has 744 places, 932 transitions, 19032 flow [2023-11-17 15:04:07,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=15649, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19032, PETRI_PLACES=744, PETRI_TRANSITIONS=932} [2023-11-17 15:04:07,054 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 685 predicate places. [2023-11-17 15:04:07,054 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 932 transitions, 19032 flow [2023-11-17 15:04:07,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:07,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 15:04:07,055 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:07,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2142974580, now seen corresponding path program 15 times [2023-11-17 15:04:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:07,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682729484] [2023-11-17 15:04:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:07,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682729484] [2023-11-17 15:04:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682729484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:08,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:08,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-17 15:04:08,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915767870] [2023-11-17 15:04:08,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:08,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 15:04:08,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 15:04:08,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-17 15:04:08,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 511 [2023-11-17 15:04:08,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 932 transitions, 19032 flow. Second operand has 23 states, 23 states have (on average 145.56521739130434) internal successors, (3348), 23 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:08,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:08,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 511 [2023-11-17 15:04:08,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:17,279 INFO L124 PetriNetUnfolderBase]: 6335/12052 cut-off events. [2023-11-17 15:04:17,279 INFO L125 PetriNetUnfolderBase]: For 4749473/4749473 co-relation queries the response was YES. [2023-11-17 15:04:17,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149818 conditions, 12052 events. 6335/12052 cut-off events. For 4749473/4749473 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 86605 event pairs, 1608 based on Foata normal form. 90/11256 useless extension candidates. Maximal degree in co-relation 149492. Up to 7247 conditions per place. [2023-11-17 15:04:17,708 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 792 selfloop transitions, 255 changer transitions 37/1088 dead transitions. [2023-11-17 15:04:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 1088 transitions, 25966 flow [2023-11-17 15:04:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:04:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:04:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4112 transitions. [2023-11-17 15:04:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29803580488511994 [2023-11-17 15:04:17,713 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4112 transitions. [2023-11-17 15:04:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4112 transitions. [2023-11-17 15:04:17,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:17,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4112 transitions. [2023-11-17 15:04:17,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 152.2962962962963) internal successors, (4112), 27 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,723 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:17,723 INFO L175 Difference]: Start difference. First operand has 744 places, 932 transitions, 19032 flow. Second operand 27 states and 4112 transitions. [2023-11-17 15:04:17,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 770 places, 1088 transitions, 25966 flow [2023-11-17 15:04:34,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 1088 transitions, 24678 flow, removed 455 selfloop flow, removed 13 redundant places. [2023-11-17 15:04:34,461 INFO L231 Difference]: Finished difference. Result has 777 places, 970 transitions, 19957 flow [2023-11-17 15:04:34,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=17892, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=19957, PETRI_PLACES=777, PETRI_TRANSITIONS=970} [2023-11-17 15:04:34,463 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 718 predicate places. [2023-11-17 15:04:34,463 INFO L495 AbstractCegarLoop]: Abstraction has has 777 places, 970 transitions, 19957 flow [2023-11-17 15:04:34,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 145.56521739130434) internal successors, (3348), 23 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:34,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:34,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 15:04:34,464 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:34,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1382543940, now seen corresponding path program 16 times [2023-11-17 15:04:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761723557] [2023-11-17 15:04:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:35,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761723557] [2023-11-17 15:04:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761723557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:35,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:04:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721253297] [2023-11-17 15:04:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:35,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:04:35,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:04:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:04:35,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:04:35,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 970 transitions, 19957 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:35,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:35,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:04:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:45,951 INFO L124 PetriNetUnfolderBase]: 6687/12707 cut-off events. [2023-11-17 15:04:45,951 INFO L125 PetriNetUnfolderBase]: For 4778929/4778929 co-relation queries the response was YES. [2023-11-17 15:04:46,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161232 conditions, 12707 events. 6687/12707 cut-off events. For 4778929/4778929 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 92295 event pairs, 1412 based on Foata normal form. 38/11829 useless extension candidates. Maximal degree in co-relation 160890. Up to 4930 conditions per place. [2023-11-17 15:04:46,600 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 465 selfloop transitions, 667 changer transitions 50/1186 dead transitions. [2023-11-17 15:04:46,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 1186 transitions, 29853 flow [2023-11-17 15:04:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 15:04:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 15:04:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5234 transitions. [2023-11-17 15:04:46,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3012547484747324 [2023-11-17 15:04:46,607 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5234 transitions. [2023-11-17 15:04:46,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5234 transitions. [2023-11-17 15:04:46,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:46,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5234 transitions. [2023-11-17 15:04:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 153.94117647058823) internal successors, (5234), 34 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:46,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:46,623 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:46,623 INFO L175 Difference]: Start difference. First operand has 777 places, 970 transitions, 19957 flow. Second operand 34 states and 5234 transitions. [2023-11-17 15:04:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 1186 transitions, 29853 flow [2023-11-17 15:05:04,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 1186 transitions, 28514 flow, removed 590 selfloop flow, removed 10 redundant places. [2023-11-17 15:05:04,343 INFO L231 Difference]: Finished difference. Result has 813 places, 1021 transitions, 22247 flow [2023-11-17 15:05:04,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=18990, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=625, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22247, PETRI_PLACES=813, PETRI_TRANSITIONS=1021} [2023-11-17 15:05:04,345 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 754 predicate places. [2023-11-17 15:05:04,345 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 1021 transitions, 22247 flow [2023-11-17 15:05:04,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:04,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:05:04,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:05:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 15:05:04,346 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:05:04,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:05:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1671107076, now seen corresponding path program 17 times [2023-11-17 15:05:04,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:05:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213023001] [2023-11-17 15:05:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:05:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:05:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:05:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:05:06,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:05:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213023001] [2023-11-17 15:05:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213023001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:05:06,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:05:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 15:05:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57900896] [2023-11-17 15:05:06,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:05:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 15:05:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:05:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 15:05:06,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:05:06,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:05:06,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 1021 transitions, 22247 flow. Second operand has 22 states, 22 states have (on average 147.63636363636363) internal successors, (3248), 22 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:06,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:05:06,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:05:06,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:05:16,215 INFO L124 PetriNetUnfolderBase]: 6874/13058 cut-off events. [2023-11-17 15:05:16,215 INFO L125 PetriNetUnfolderBase]: For 4754024/4754024 co-relation queries the response was YES. [2023-11-17 15:05:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168918 conditions, 13058 events. 6874/13058 cut-off events. For 4754024/4754024 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 95469 event pairs, 1288 based on Foata normal form. 28/12153 useless extension candidates. Maximal degree in co-relation 168568. Up to 4302 conditions per place. [2023-11-17 15:05:16,736 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 401 selfloop transitions, 757 changer transitions 64/1226 dead transitions. [2023-11-17 15:05:16,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 1226 transitions, 32257 flow [2023-11-17 15:05:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 15:05:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 15:05:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5244 transitions. [2023-11-17 15:05:16,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3018303211695637 [2023-11-17 15:05:16,741 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5244 transitions. [2023-11-17 15:05:16,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5244 transitions. [2023-11-17 15:05:16,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:05:16,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5244 transitions. [2023-11-17 15:05:16,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 154.23529411764707) internal successors, (5244), 34 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:16,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:16,758 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:16,758 INFO L175 Difference]: Start difference. First operand has 813 places, 1021 transitions, 22247 flow. Second operand 34 states and 5244 transitions. [2023-11-17 15:05:16,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 1226 transitions, 32257 flow [2023-11-17 15:05:36,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 1226 transitions, 30827 flow, removed 422 selfloop flow, removed 18 redundant places. [2023-11-17 15:05:36,868 INFO L231 Difference]: Finished difference. Result has 839 places, 1043 transitions, 24153 flow [2023-11-17 15:05:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=20935, PETRI_DIFFERENCE_MINUEND_PLACES=795, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1021, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=736, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=24153, PETRI_PLACES=839, PETRI_TRANSITIONS=1043} [2023-11-17 15:05:36,870 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 780 predicate places. [2023-11-17 15:05:36,870 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 1043 transitions, 24153 flow [2023-11-17 15:05:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 147.63636363636363) internal successors, (3248), 22 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:36,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:05:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:05:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 15:05:36,870 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:05:36,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:05:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash 77381778, now seen corresponding path program 18 times [2023-11-17 15:05:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:05:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337433477] [2023-11-17 15:05:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:05:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:05:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:05:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:05:38,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:05:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337433477] [2023-11-17 15:05:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337433477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:05:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:05:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:05:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777709911] [2023-11-17 15:05:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:05:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:05:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:05:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:05:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:05:38,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:05:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 1043 transitions, 24153 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:05:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:05:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:05:48,938 INFO L124 PetriNetUnfolderBase]: 7027/13365 cut-off events. [2023-11-17 15:05:48,938 INFO L125 PetriNetUnfolderBase]: For 5071242/5071242 co-relation queries the response was YES. [2023-11-17 15:05:49,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178350 conditions, 13365 events. 7027/13365 cut-off events. For 5071242/5071242 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 98267 event pairs, 1641 based on Foata normal form. 44/12445 useless extension candidates. Maximal degree in co-relation 177990. Up to 7554 conditions per place. [2023-11-17 15:05:49,609 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 701 selfloop transitions, 470 changer transitions 38/1213 dead transitions. [2023-11-17 15:05:49,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 867 places, 1213 transitions, 32655 flow [2023-11-17 15:05:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 15:05:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 15:05:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4514 transitions. [2023-11-17 15:05:49,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30460894797219784 [2023-11-17 15:05:49,613 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4514 transitions. [2023-11-17 15:05:49,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4514 transitions. [2023-11-17 15:05:49,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:05:49,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4514 transitions. [2023-11-17 15:05:49,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 155.6551724137931) internal successors, (4514), 29 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:49,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 511.0) internal successors, (15330), 30 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:49,629 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 511.0) internal successors, (15330), 30 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:05:49,629 INFO L175 Difference]: Start difference. First operand has 839 places, 1043 transitions, 24153 flow. Second operand 29 states and 4514 transitions. [2023-11-17 15:05:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 867 places, 1213 transitions, 32655 flow Received shutdown request... [2023-11-17 15:06:11,848 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-17 15:06:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 15:06:11,849 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 15:06:11,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 15:06:11,850 INFO L445 BasicCegarLoop]: Path program histogram: [18, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-17 15:06:11,854 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:06:11,854 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:06:11,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:06:11 BasicIcfg [2023-11-17 15:06:11,856 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:06:11,856 INFO L158 Benchmark]: Toolchain (without parser) took 488139.74ms. Allocated memory was 198.2MB in the beginning and 6.9GB in the end (delta: 6.7GB). Free memory was 169.0MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 198.2MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.92ms. Allocated memory is still 198.2MB. Free memory was 168.5MB in the beginning and 138.0MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.58ms. Allocated memory is still 198.2MB. Free memory was 138.0MB in the beginning and 134.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: Boogie Preprocessor took 50.38ms. Allocated memory is still 198.2MB. Free memory was 134.9MB in the beginning and 132.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: RCFGBuilder took 523.85ms. Allocated memory is still 198.2MB. Free memory was 132.3MB in the beginning and 107.6MB in the end (delta: 24.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-11-17 15:06:11,857 INFO L158 Benchmark]: TraceAbstraction took 486876.10ms. Allocated memory was 198.2MB in the beginning and 6.9GB in the end (delta: 6.7GB). Free memory was 106.6MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 15:06:11,859 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 198.2MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 610.92ms. Allocated memory is still 198.2MB. Free memory was 168.5MB in the beginning and 138.0MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.58ms. Allocated memory is still 198.2MB. Free memory was 138.0MB in the beginning and 134.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.38ms. Allocated memory is still 198.2MB. Free memory was 134.9MB in the beginning and 132.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 523.85ms. Allocated memory is still 198.2MB. Free memory was 132.3MB in the beginning and 107.6MB in the end (delta: 24.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 486876.10ms. Allocated memory was 198.2MB in the beginning and 6.9GB in the end (delta: 6.7GB). Free memory was 106.6MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 253 PlacesBefore, 59 PlacesAfterwards, 261 TransitionsBefore, 62 TransitionsAfterwards, 17694 CoEnabledTransitionPairs, 8 FixpointIterations, 61 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 238 TotalNumberOfCompositions, 32926 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16961, independent: 16342, independent conditional: 0, independent unconditional: 16342, dependent: 619, dependent conditional: 0, dependent unconditional: 619, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11737, independent: 11555, independent conditional: 0, independent unconditional: 11555, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11737, independent: 11525, independent conditional: 0, independent unconditional: 11525, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 212, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 321, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16961, independent: 4787, independent conditional: 0, independent unconditional: 4787, dependent: 437, dependent conditional: 0, dependent unconditional: 437, unknown: 11737, unknown conditional: 0, unknown unconditional: 11737] , Statistics on independence cache: Total cache size (in pairs): 655, Positive cache size: 576, Positive conditional cache size: 0, Positive unconditional cache size: 576, Negative cache size: 79, Negative conditional cache size: 0, Negative unconditional cache size: 79, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 433 locations, 7 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: 486.7s, OverallIterations: 34, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 281.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4348 SdHoareTripleChecker+Valid, 42.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4348 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 38.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 556 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39728 IncrementalHoareTripleChecker+Invalid, 40284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 556 mSolverCounterUnsat, 15 mSDtfsCounter, 39728 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 966 GetRequests, 130 SyntacticMatches, 11 SemanticMatches, 825 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5673 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24153occurred in iteration=33, InterpolantAutomatonStates: 646, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 196.5s InterpolantComputationTime, 1026 NumberOfCodeBlocks, 1026 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 992 ConstructedInterpolants, 0 QuantifiedInterpolants, 1747259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 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 [2023-11-17 15:06:11,868 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown