/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:18:57,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:18:57,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 20:18:57,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:18:57,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:18:57,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:18:57,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:18:57,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:18:57,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:18:57,540 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:18:57,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:18:57,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:18:57,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:18:57,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:18:57,541 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:18:57,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:18:57,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:18:57,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:18:57,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:18:57,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:18:57,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:18:57,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:18:57,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:18:57,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 20:18:57,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:18:57,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:18:57,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:18:57,754 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:18:57,754 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:18:57,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2025-04-13 20:18:59,025 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcd6b775/735e4b7d997c46549db7ebf6414c7a2c/FLAGf0d5db56d [2025-04-13 20:18:59,203 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:18:59,203 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2025-04-13 20:18:59,208 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcd6b775/735e4b7d997c46549db7ebf6414c7a2c/FLAGf0d5db56d [2025-04-13 20:19:00,076 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcd6b775/735e4b7d997c46549db7ebf6414c7a2c [2025-04-13 20:19:00,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:19:00,079 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:19:00,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:00,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:19:00,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:19:00,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105be67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00, skipping insertion in model container [2025-04-13 20:19:00,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:19:00,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[2554,2567] [2025-04-13 20:19:00,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:00,239 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:19:00,262 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[2554,2567] [2025-04-13 20:19:00,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:00,279 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:19:00,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00 WrapperNode [2025-04-13 20:19:00,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:00,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:00,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:19:00,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:19:00,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,311 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 172 [2025-04-13 20:19:00,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:00,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:19:00,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:19:00,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:19:00,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,331 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 20:19:00,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,335 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:19:00,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:19:00,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:19:00,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:19:00,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (1/1) ... [2025-04-13 20:19:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:19:00,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 20:19:00,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 20:19:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:19:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:19:00,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:19:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:19:00,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:19:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:19:00,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:19:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 20:19:00,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 20:19:00,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:19:00,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:19:00,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:19:00,381 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 20:19:00,458 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:19:00,459 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:19:00,693 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:19:00,693 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:19:00,694 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:19:00,849 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:19:00,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:00 BoogieIcfgContainer [2025-04-13 20:19:00,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:19:00,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:19:00,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:19:00,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:19:00,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:19:00" (1/3) ... [2025-04-13 20:19:00,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f11a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:00, skipping insertion in model container [2025-04-13 20:19:00,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:00" (2/3) ... [2025-04-13 20:19:00,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f11a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:00, skipping insertion in model container [2025-04-13 20:19:00,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:00" (3/3) ... [2025-04-13 20:19:00,855 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2025-04-13 20:19:00,864 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:19:00,865 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-4.wvr.c that has 5 procedures, 53 locations, 51 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:19:00,865 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:19:00,909 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 20:19:00,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 55 transitions, 138 flow [2025-04-13 20:19:00,980 INFO L116 PetriNetUnfolderBase]: 3/51 cut-off events. [2025-04-13 20:19:00,982 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-13 20:19:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 3/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-04-13 20:19:00,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 55 transitions, 138 flow [2025-04-13 20:19:00,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 50 transitions, 124 flow [2025-04-13 20:19:00,996 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:19:01,009 INFO L340 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, 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;@83446cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:19:01,010 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 20:19:01,030 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:19:01,030 INFO L116 PetriNetUnfolderBase]: 3/49 cut-off events. [2025-04-13 20:19:01,030 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-13 20:19:01,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:01,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:01,033 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:01,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1484282318, now seen corresponding path program 1 times [2025-04-13 20:19:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:01,045 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107049891] [2025-04-13 20:19:01,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:01,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:01,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:19:01,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:19:01,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:01,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:01,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:01,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107049891] [2025-04-13 20:19:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107049891] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:19:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068399428] [2025-04-13 20:19:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:01,332 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:19:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:01,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:19:01,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:19:01,361 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2025-04-13 20:19:01,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:01,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:01,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2025-04-13 20:19:01,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:02,646 INFO L116 PetriNetUnfolderBase]: 16304/21648 cut-off events. [2025-04-13 20:19:02,646 INFO L117 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2025-04-13 20:19:02,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44459 conditions, 21648 events. 16304/21648 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 119154 event pairs, 7648 based on Foata normal form. 1/19247 useless extension candidates. Maximal degree in co-relation 40271. Up to 11081 conditions per place. [2025-04-13 20:19:02,829 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 65 selfloop transitions, 6 changer transitions 1/81 dead transitions. [2025-04-13 20:19:02,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 348 flow [2025-04-13 20:19:02,830 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:19:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:19:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-04-13 20:19:02,839 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2025-04-13 20:19:02,841 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 124 flow. Second operand 3 states and 112 transitions. [2025-04-13 20:19:02,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 348 flow [2025-04-13 20:19:02,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 320 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-13 20:19:02,876 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 140 flow [2025-04-13 20:19:02,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2025-04-13 20:19:02,881 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2025-04-13 20:19:02,881 INFO L485 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 140 flow [2025-04-13 20:19:02,882 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:02,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:02,882 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:02,882 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:19:02,882 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:02,883 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1528878790, now seen corresponding path program 1 times [2025-04-13 20:19:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:02,884 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148953245] [2025-04-13 20:19:02,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:02,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:02,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:02,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:02,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:02,976 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148953245] [2025-04-13 20:19:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148953245] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:02,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:19:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871921565] [2025-04-13 20:19:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:02,977 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:19:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:02,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:19:02,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:19:02,982 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2025-04-13 20:19:02,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:02,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:02,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2025-04-13 20:19:02,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:03,863 INFO L116 PetriNetUnfolderBase]: 12347/17332 cut-off events. [2025-04-13 20:19:03,864 INFO L117 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2025-04-13 20:19:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35177 conditions, 17332 events. 12347/17332 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 100560 event pairs, 9610 based on Foata normal form. 0/16878 useless extension candidates. Maximal degree in co-relation 22676. Up to 14202 conditions per place. [2025-04-13 20:19:03,932 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2025-04-13 20:19:03,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 299 flow [2025-04-13 20:19:03,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:19:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:19:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-04-13 20:19:03,933 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2025-04-13 20:19:03,933 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 140 flow. Second operand 3 states and 104 transitions. [2025-04-13 20:19:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 299 flow [2025-04-13 20:19:03,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:19:03,936 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 155 flow [2025-04-13 20:19:03,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2025-04-13 20:19:03,937 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2025-04-13 20:19:03,937 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 155 flow [2025-04-13 20:19:03,937 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:03,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:03,937 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:03,937 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:19:03,937 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:03,938 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash 884715352, now seen corresponding path program 1 times [2025-04-13 20:19:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:03,939 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812611487] [2025-04-13 20:19:03,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:03,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:03,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:03,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:03,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:03,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:04,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:04,182 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812611487] [2025-04-13 20:19:04,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812611487] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954941795] [2025-04-13 20:19:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:04,182 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:04,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:04,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:04,186 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:04,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:04,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:04,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:05,179 INFO L116 PetriNetUnfolderBase]: 13235/19256 cut-off events. [2025-04-13 20:19:05,180 INFO L117 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2025-04-13 20:19:05,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39415 conditions, 19256 events. 13235/19256 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 122746 event pairs, 2408 based on Foata normal form. 241/19463 useless extension candidates. Maximal degree in co-relation 24403. Up to 6763 conditions per place. [2025-04-13 20:19:05,232 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 104 selfloop transitions, 35 changer transitions 1/154 dead transitions. [2025-04-13 20:19:05,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 154 transitions, 672 flow [2025-04-13 20:19:05,233 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:19:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:19:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2025-04-13 20:19:05,237 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6415584415584416 [2025-04-13 20:19:05,237 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 155 flow. Second operand 7 states and 247 transitions. [2025-04-13 20:19:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 154 transitions, 672 flow [2025-04-13 20:19:05,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 154 transitions, 662 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:05,246 INFO L231 Difference]: Finished difference. Result has 62 places, 83 transitions, 296 flow [2025-04-13 20:19:05,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=62, PETRI_TRANSITIONS=83} [2025-04-13 20:19:05,247 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2025-04-13 20:19:05,247 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 83 transitions, 296 flow [2025-04-13 20:19:05,247 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:05,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:05,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:05,247 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 20:19:05,247 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:05,248 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -376914334, now seen corresponding path program 2 times [2025-04-13 20:19:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:05,248 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759014252] [2025-04-13 20:19:05,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:19:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:05,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:05,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:05,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:05,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:05,416 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759014252] [2025-04-13 20:19:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759014252] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:05,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:05,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:19:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201731468] [2025-04-13 20:19:05,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:05,416 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:19:05,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:05,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:19:05,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:19:05,422 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:05,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 83 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:05,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:05,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:06,857 INFO L116 PetriNetUnfolderBase]: 22484/32837 cut-off events. [2025-04-13 20:19:06,857 INFO L117 PetriNetUnfolderBase]: For 9871/9945 co-relation queries the response was YES. [2025-04-13 20:19:06,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79916 conditions, 32837 events. 22484/32837 cut-off events. For 9871/9945 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 224603 event pairs, 5046 based on Foata normal form. 330/33069 useless extension candidates. Maximal degree in co-relation 50871. Up to 13242 conditions per place. [2025-04-13 20:19:06,991 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 115 selfloop transitions, 48 changer transitions 5/182 dead transitions. [2025-04-13 20:19:06,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 182 transitions, 966 flow [2025-04-13 20:19:06,992 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:19:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:19:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2025-04-13 20:19:06,993 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2025-04-13 20:19:06,993 INFO L175 Difference]: Start difference. First operand has 62 places, 83 transitions, 296 flow. Second operand 5 states and 190 transitions. [2025-04-13 20:19:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 182 transitions, 966 flow [2025-04-13 20:19:07,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 959 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:19:07,014 INFO L231 Difference]: Finished difference. Result has 68 places, 119 transitions, 662 flow [2025-04-13 20:19:07,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=68, PETRI_TRANSITIONS=119} [2025-04-13 20:19:07,015 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2025-04-13 20:19:07,015 INFO L485 AbstractCegarLoop]: Abstraction has has 68 places, 119 transitions, 662 flow [2025-04-13 20:19:07,015 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:07,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:07,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:07,015 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 20:19:07,015 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:07,015 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1372368980, now seen corresponding path program 3 times [2025-04-13 20:19:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:07,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590312755] [2025-04-13 20:19:07,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:19:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:07,023 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:07,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:07,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:19:07,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:07,175 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590312755] [2025-04-13 20:19:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590312755] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:07,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:07,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:19:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536081450] [2025-04-13 20:19:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:07,175 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 20:19:07,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:07,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 20:19:07,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 20:19:07,178 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:07,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 119 transitions, 662 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:07,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:07,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:07,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:09,016 INFO L116 PetriNetUnfolderBase]: 25135/37076 cut-off events. [2025-04-13 20:19:09,016 INFO L117 PetriNetUnfolderBase]: For 41319/41467 co-relation queries the response was YES. [2025-04-13 20:19:09,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110487 conditions, 37076 events. 25135/37076 cut-off events. For 41319/41467 co-relation queries the response was YES. Maximal size of possible extension queue 1943. Compared 265448 event pairs, 4449 based on Foata normal form. 576/37551 useless extension candidates. Maximal degree in co-relation 68035. Up to 14005 conditions per place. [2025-04-13 20:19:09,160 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 118 selfloop transitions, 84 changer transitions 4/220 dead transitions. [2025-04-13 20:19:09,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 220 transitions, 1481 flow [2025-04-13 20:19:09,160 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 20:19:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 20:19:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2025-04-13 20:19:09,161 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6878787878787879 [2025-04-13 20:19:09,161 INFO L175 Difference]: Start difference. First operand has 68 places, 119 transitions, 662 flow. Second operand 6 states and 227 transitions. [2025-04-13 20:19:09,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 220 transitions, 1481 flow [2025-04-13 20:19:09,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 220 transitions, 1481 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 20:19:09,193 INFO L231 Difference]: Finished difference. Result has 75 places, 145 transitions, 1079 flow [2025-04-13 20:19:09,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=75, PETRI_TRANSITIONS=145} [2025-04-13 20:19:09,194 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2025-04-13 20:19:09,194 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 145 transitions, 1079 flow [2025-04-13 20:19:09,194 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:09,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:09,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:09,194 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 20:19:09,195 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:09,195 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash -968342007, now seen corresponding path program 1 times [2025-04-13 20:19:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:09,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683935753] [2025-04-13 20:19:09,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:09,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:09,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:09,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:09,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:09,321 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683935753] [2025-04-13 20:19:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683935753] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:19:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600469821] [2025-04-13 20:19:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:09,321 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:19:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:09,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:19:09,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:19:09,327 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:09,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 145 transitions, 1079 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:09,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:11,426 INFO L116 PetriNetUnfolderBase]: 24818/36876 cut-off events. [2025-04-13 20:19:11,426 INFO L117 PetriNetUnfolderBase]: For 87581/87735 co-relation queries the response was YES. [2025-04-13 20:19:11,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125705 conditions, 36876 events. 24818/36876 cut-off events. For 87581/87735 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 264097 event pairs, 6083 based on Foata normal form. 473/37213 useless extension candidates. Maximal degree in co-relation 77787. Up to 18659 conditions per place. [2025-04-13 20:19:11,761 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 138 selfloop transitions, 66 changer transitions 1/219 dead transitions. [2025-04-13 20:19:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 219 transitions, 1859 flow [2025-04-13 20:19:11,761 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:19:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:19:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2025-04-13 20:19:11,762 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6872727272727273 [2025-04-13 20:19:11,762 INFO L175 Difference]: Start difference. First operand has 75 places, 145 transitions, 1079 flow. Second operand 5 states and 189 transitions. [2025-04-13 20:19:11,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 219 transitions, 1859 flow [2025-04-13 20:19:11,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 219 transitions, 1789 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:11,829 INFO L231 Difference]: Finished difference. Result has 79 places, 157 transitions, 1360 flow [2025-04-13 20:19:11,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1360, PETRI_PLACES=79, PETRI_TRANSITIONS=157} [2025-04-13 20:19:11,829 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2025-04-13 20:19:11,829 INFO L485 AbstractCegarLoop]: Abstraction has has 79 places, 157 transitions, 1360 flow [2025-04-13 20:19:11,830 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:11,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:11,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:11,830 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 20:19:11,830 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:11,830 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1356482576, now seen corresponding path program 4 times [2025-04-13 20:19:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:11,830 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70854119] [2025-04-13 20:19:11,830 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 20:19:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:11,836 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-13 20:19:11,845 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:11,845 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 20:19:11,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:11,986 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70854119] [2025-04-13 20:19:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70854119] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:19:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996451346] [2025-04-13 20:19:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:11,986 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:19:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:11,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:19:11,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:19:11,990 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:11,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 157 transitions, 1360 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:11,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:11,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:11,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:13,747 INFO L116 PetriNetUnfolderBase]: 24437/36566 cut-off events. [2025-04-13 20:19:13,748 INFO L117 PetriNetUnfolderBase]: For 112505/112798 co-relation queries the response was YES. [2025-04-13 20:19:13,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131345 conditions, 36566 events. 24437/36566 cut-off events. For 112505/112798 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 264930 event pairs, 6153 based on Foata normal form. 567/36945 useless extension candidates. Maximal degree in co-relation 81679. Up to 18583 conditions per place. [2025-04-13 20:19:14,133 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 135 selfloop transitions, 78 changer transitions 9/236 dead transitions. [2025-04-13 20:19:14,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 236 transitions, 2249 flow [2025-04-13 20:19:14,133 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:19:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:19:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2025-04-13 20:19:14,134 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6945454545454546 [2025-04-13 20:19:14,134 INFO L175 Difference]: Start difference. First operand has 79 places, 157 transitions, 1360 flow. Second operand 5 states and 191 transitions. [2025-04-13 20:19:14,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 236 transitions, 2249 flow [2025-04-13 20:19:14,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 236 transitions, 2160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:14,178 INFO L231 Difference]: Finished difference. Result has 83 places, 170 transitions, 1673 flow [2025-04-13 20:19:14,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1673, PETRI_PLACES=83, PETRI_TRANSITIONS=170} [2025-04-13 20:19:14,179 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 23 predicate places. [2025-04-13 20:19:14,179 INFO L485 AbstractCegarLoop]: Abstraction has has 83 places, 170 transitions, 1673 flow [2025-04-13 20:19:14,179 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:14,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:14,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:14,179 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 20:19:14,179 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:14,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash 414204340, now seen corresponding path program 5 times [2025-04-13 20:19:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:14,180 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782959833] [2025-04-13 20:19:14,180 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 20:19:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:14,185 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:14,190 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:14,190 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:14,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:14,282 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782959833] [2025-04-13 20:19:14,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782959833] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:14,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:14,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:19:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570697725] [2025-04-13 20:19:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:14,283 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:19:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:14,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:19:14,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:19:14,288 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:14,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 170 transitions, 1673 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:14,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:14,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:14,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:15,821 INFO L116 PetriNetUnfolderBase]: 16861/25209 cut-off events. [2025-04-13 20:19:15,821 INFO L117 PetriNetUnfolderBase]: For 83618/84410 co-relation queries the response was YES. [2025-04-13 20:19:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91565 conditions, 25209 events. 16861/25209 cut-off events. For 83618/84410 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 171625 event pairs, 4320 based on Foata normal form. 642/25581 useless extension candidates. Maximal degree in co-relation 69318. Up to 14334 conditions per place. [2025-04-13 20:19:15,948 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 125 selfloop transitions, 84 changer transitions 7/230 dead transitions. [2025-04-13 20:19:15,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 230 transitions, 2409 flow [2025-04-13 20:19:15,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:19:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:19:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2025-04-13 20:19:15,950 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2025-04-13 20:19:15,950 INFO L175 Difference]: Start difference. First operand has 83 places, 170 transitions, 1673 flow. Second operand 5 states and 185 transitions. [2025-04-13 20:19:15,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 230 transitions, 2409 flow [2025-04-13 20:19:15,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 230 transitions, 2316 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:15,990 INFO L231 Difference]: Finished difference. Result has 87 places, 174 transitions, 1897 flow [2025-04-13 20:19:15,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1897, PETRI_PLACES=87, PETRI_TRANSITIONS=174} [2025-04-13 20:19:15,991 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 27 predicate places. [2025-04-13 20:19:15,991 INFO L485 AbstractCegarLoop]: Abstraction has has 87 places, 174 transitions, 1897 flow [2025-04-13 20:19:15,991 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:15,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:15,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:15,991 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 20:19:15,991 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:15,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1736421932, now seen corresponding path program 6 times [2025-04-13 20:19:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:15,992 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606670183] [2025-04-13 20:19:15,992 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 20:19:15,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:15,999 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:16,006 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:16,007 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 20:19:16,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:16,127 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606670183] [2025-04-13 20:19:16,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606670183] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:16,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:16,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378921545] [2025-04-13 20:19:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:16,128 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:16,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:16,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:16,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:16,131 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 174 transitions, 1897 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:17,763 INFO L116 PetriNetUnfolderBase]: 17044/25876 cut-off events. [2025-04-13 20:19:17,764 INFO L117 PetriNetUnfolderBase]: For 99644/100572 co-relation queries the response was YES. [2025-04-13 20:19:17,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97035 conditions, 25876 events. 17044/25876 cut-off events. For 99644/100572 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 182130 event pairs, 3533 based on Foata normal form. 705/26357 useless extension candidates. Maximal degree in co-relation 74488. Up to 8768 conditions per place. [2025-04-13 20:19:17,884 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 135 selfloop transitions, 122 changer transitions 1/272 dead transitions. [2025-04-13 20:19:17,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 272 transitions, 2881 flow [2025-04-13 20:19:17,885 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 287 transitions. [2025-04-13 20:19:17,886 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6522727272727272 [2025-04-13 20:19:17,886 INFO L175 Difference]: Start difference. First operand has 87 places, 174 transitions, 1897 flow. Second operand 8 states and 287 transitions. [2025-04-13 20:19:17,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 272 transitions, 2881 flow [2025-04-13 20:19:17,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 272 transitions, 2778 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:17,929 INFO L231 Difference]: Finished difference. Result has 94 places, 183 transitions, 2224 flow [2025-04-13 20:19:17,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2224, PETRI_PLACES=94, PETRI_TRANSITIONS=183} [2025-04-13 20:19:17,930 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 34 predicate places. [2025-04-13 20:19:17,930 INFO L485 AbstractCegarLoop]: Abstraction has has 94 places, 183 transitions, 2224 flow [2025-04-13 20:19:17,930 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:17,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:17,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:17,930 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 20:19:17,930 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:17,930 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash -838478993, now seen corresponding path program 2 times [2025-04-13 20:19:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:17,931 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334463981] [2025-04-13 20:19:17,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:19:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:17,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:17,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:17,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:17,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:18,078 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334463981] [2025-04-13 20:19:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334463981] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246127954] [2025-04-13 20:19:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:18,078 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:18,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:18,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:18,083 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:18,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 183 transitions, 2224 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:19,607 INFO L116 PetriNetUnfolderBase]: 16893/26050 cut-off events. [2025-04-13 20:19:19,607 INFO L117 PetriNetUnfolderBase]: For 123669/124642 co-relation queries the response was YES. [2025-04-13 20:19:19,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103124 conditions, 26050 events. 16893/26050 cut-off events. For 123669/124642 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 188013 event pairs, 3527 based on Foata normal form. 1015/26857 useless extension candidates. Maximal degree in co-relation 79811. Up to 8727 conditions per place. [2025-04-13 20:19:19,764 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 137 selfloop transitions, 134 changer transitions 24/309 dead transitions. [2025-04-13 20:19:19,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 309 transitions, 3691 flow [2025-04-13 20:19:19,764 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2025-04-13 20:19:19,765 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6659090909090909 [2025-04-13 20:19:19,765 INFO L175 Difference]: Start difference. First operand has 94 places, 183 transitions, 2224 flow. Second operand 8 states and 293 transitions. [2025-04-13 20:19:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 309 transitions, 3691 flow [2025-04-13 20:19:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 309 transitions, 3500 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 20:19:19,847 INFO L231 Difference]: Finished difference. Result has 100 places, 194 transitions, 2552 flow [2025-04-13 20:19:19,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2552, PETRI_PLACES=100, PETRI_TRANSITIONS=194} [2025-04-13 20:19:19,848 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 40 predicate places. [2025-04-13 20:19:19,848 INFO L485 AbstractCegarLoop]: Abstraction has has 100 places, 194 transitions, 2552 flow [2025-04-13 20:19:19,848 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:19,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:19,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:19,849 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-13 20:19:19,849 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:19,849 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2048366502, now seen corresponding path program 7 times [2025-04-13 20:19:19,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:19,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650657353] [2025-04-13 20:19:19,849 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 20:19:19,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:19,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:19,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:19,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:19,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:19,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:19,951 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650657353] [2025-04-13 20:19:19,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650657353] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:19,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:19,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891302151] [2025-04-13 20:19:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:19,951 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:19,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:19,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:19,953 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 194 transitions, 2552 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:19,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:19,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:21,201 INFO L116 PetriNetUnfolderBase]: 12061/18902 cut-off events. [2025-04-13 20:19:21,201 INFO L117 PetriNetUnfolderBase]: For 88245/88771 co-relation queries the response was YES. [2025-04-13 20:19:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74995 conditions, 18902 events. 12061/18902 cut-off events. For 88245/88771 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 131552 event pairs, 2744 based on Foata normal form. 714/19512 useless extension candidates. Maximal degree in co-relation 61518. Up to 5945 conditions per place. [2025-04-13 20:19:21,288 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 118 selfloop transitions, 129 changer transitions 38/298 dead transitions. [2025-04-13 20:19:21,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 298 transitions, 3828 flow [2025-04-13 20:19:21,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2025-04-13 20:19:21,290 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.634090909090909 [2025-04-13 20:19:21,290 INFO L175 Difference]: Start difference. First operand has 100 places, 194 transitions, 2552 flow. Second operand 8 states and 279 transitions. [2025-04-13 20:19:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 298 transitions, 3828 flow [2025-04-13 20:19:21,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 298 transitions, 3687 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 20:19:21,349 INFO L231 Difference]: Finished difference. Result has 106 places, 185 transitions, 2595 flow [2025-04-13 20:19:21,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2595, PETRI_PLACES=106, PETRI_TRANSITIONS=185} [2025-04-13 20:19:21,350 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2025-04-13 20:19:21,350 INFO L485 AbstractCegarLoop]: Abstraction has has 106 places, 185 transitions, 2595 flow [2025-04-13 20:19:21,350 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:21,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:21,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:21,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-13 20:19:21,350 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:21,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash 80254424, now seen corresponding path program 8 times [2025-04-13 20:19:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:21,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941221952] [2025-04-13 20:19:21,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:19:21,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:21,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:21,364 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:21,364 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:21,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:21,447 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941221952] [2025-04-13 20:19:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941221952] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:21,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-13 20:19:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962067931] [2025-04-13 20:19:21,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:21,447 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 20:19:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:21,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 20:19:21,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-04-13 20:19:21,450 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:21,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 185 transitions, 2595 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:21,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:21,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:21,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:22,542 INFO L116 PetriNetUnfolderBase]: 10746/16757 cut-off events. [2025-04-13 20:19:22,543 INFO L117 PetriNetUnfolderBase]: For 91417/92053 co-relation queries the response was YES. [2025-04-13 20:19:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67244 conditions, 16757 events. 10746/16757 cut-off events. For 91417/92053 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 115053 event pairs, 2579 based on Foata normal form. 370/16999 useless extension candidates. Maximal degree in co-relation 53681. Up to 6342 conditions per place. [2025-04-13 20:19:22,622 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 106 selfloop transitions, 129 changer transitions 32/280 dead transitions. [2025-04-13 20:19:22,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 280 transitions, 3672 flow [2025-04-13 20:19:22,622 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 20:19:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 20:19:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2025-04-13 20:19:22,623 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5898989898989899 [2025-04-13 20:19:22,623 INFO L175 Difference]: Start difference. First operand has 106 places, 185 transitions, 2595 flow. Second operand 9 states and 292 transitions. [2025-04-13 20:19:22,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 280 transitions, 3672 flow [2025-04-13 20:19:22,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 280 transitions, 3546 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 20:19:22,705 INFO L231 Difference]: Finished difference. Result has 112 places, 174 transitions, 2535 flow [2025-04-13 20:19:22,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2535, PETRI_PLACES=112, PETRI_TRANSITIONS=174} [2025-04-13 20:19:22,705 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 52 predicate places. [2025-04-13 20:19:22,705 INFO L485 AbstractCegarLoop]: Abstraction has has 112 places, 174 transitions, 2535 flow [2025-04-13 20:19:22,706 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:22,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:22,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:22,706 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-13 20:19:22,706 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:22,706 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 275960930, now seen corresponding path program 9 times [2025-04-13 20:19:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:22,706 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355412032] [2025-04-13 20:19:22,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:19:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:22,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:22,714 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:22,714 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:19:22,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:22,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:22,783 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355412032] [2025-04-13 20:19:22,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355412032] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:22,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:22,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394915117] [2025-04-13 20:19:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:22,783 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:22,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:22,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:22,787 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:22,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 174 transitions, 2535 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:22,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:22,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:22,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:23,832 INFO L116 PetriNetUnfolderBase]: 10073/15750 cut-off events. [2025-04-13 20:19:23,832 INFO L117 PetriNetUnfolderBase]: For 100702/101362 co-relation queries the response was YES. [2025-04-13 20:19:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64639 conditions, 15750 events. 10073/15750 cut-off events. For 100702/101362 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 107955 event pairs, 2457 based on Foata normal form. 372/15994 useless extension candidates. Maximal degree in co-relation 51083. Up to 6092 conditions per place. [2025-04-13 20:19:23,909 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 100 selfloop transitions, 132 changer transitions 6/251 dead transitions. [2025-04-13 20:19:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 251 transitions, 3383 flow [2025-04-13 20:19:23,909 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2025-04-13 20:19:23,910 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2025-04-13 20:19:23,910 INFO L175 Difference]: Start difference. First operand has 112 places, 174 transitions, 2535 flow. Second operand 8 states and 266 transitions. [2025-04-13 20:19:23,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 251 transitions, 3383 flow [2025-04-13 20:19:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 251 transitions, 3122 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-04-13 20:19:23,996 INFO L231 Difference]: Finished difference. Result has 114 places, 178 transitions, 2617 flow [2025-04-13 20:19:23,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2617, PETRI_PLACES=114, PETRI_TRANSITIONS=178} [2025-04-13 20:19:23,997 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 54 predicate places. [2025-04-13 20:19:23,997 INFO L485 AbstractCegarLoop]: Abstraction has has 114 places, 178 transitions, 2617 flow [2025-04-13 20:19:23,997 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:23,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:23,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:23,997 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-13 20:19:23,998 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:23,998 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1505649820, now seen corresponding path program 10 times [2025-04-13 20:19:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:23,998 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835817985] [2025-04-13 20:19:23,998 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 20:19:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:24,003 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-13 20:19:24,007 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:24,007 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 20:19:24,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:24,100 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835817985] [2025-04-13 20:19:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835817985] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:24,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:24,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 20:19:24,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396396003] [2025-04-13 20:19:24,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:24,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 20:19:24,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:24,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 20:19:24,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-13 20:19:24,103 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:24,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 178 transitions, 2617 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:24,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:25,496 INFO L116 PetriNetUnfolderBase]: 10286/16155 cut-off events. [2025-04-13 20:19:25,496 INFO L117 PetriNetUnfolderBase]: For 104830/105416 co-relation queries the response was YES. [2025-04-13 20:19:25,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66404 conditions, 16155 events. 10286/16155 cut-off events. For 104830/105416 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 112090 event pairs, 2545 based on Foata normal form. 416/16434 useless extension candidates. Maximal degree in co-relation 52350. Up to 6120 conditions per place. [2025-04-13 20:19:25,564 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 118 selfloop transitions, 134 changer transitions 20/285 dead transitions. [2025-04-13 20:19:25,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 285 transitions, 3758 flow [2025-04-13 20:19:25,568 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 20:19:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-13 20:19:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 364 transitions. [2025-04-13 20:19:25,569 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2025-04-13 20:19:25,569 INFO L175 Difference]: Start difference. First operand has 114 places, 178 transitions, 2617 flow. Second operand 12 states and 364 transitions. [2025-04-13 20:19:25,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 285 transitions, 3758 flow [2025-04-13 20:19:25,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 285 transitions, 3585 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-04-13 20:19:25,654 INFO L231 Difference]: Finished difference. Result has 123 places, 180 transitions, 2735 flow [2025-04-13 20:19:25,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2735, PETRI_PLACES=123, PETRI_TRANSITIONS=180} [2025-04-13 20:19:25,654 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2025-04-13 20:19:25,654 INFO L485 AbstractCegarLoop]: Abstraction has has 123 places, 180 transitions, 2735 flow [2025-04-13 20:19:25,655 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:25,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:25,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:25,655 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-13 20:19:25,655 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:25,655 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1604989210, now seen corresponding path program 11 times [2025-04-13 20:19:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:25,655 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962462888] [2025-04-13 20:19:25,655 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 20:19:25,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:25,660 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:25,662 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:25,663 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:25,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:25,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:25,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962462888] [2025-04-13 20:19:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962462888] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:25,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:25,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 20:19:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729318977] [2025-04-13 20:19:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:25,734 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 20:19:25,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:25,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 20:19:25,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-13 20:19:25,737 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:25,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 180 transitions, 2735 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:25,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:25,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:25,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:26,881 INFO L116 PetriNetUnfolderBase]: 10314/16146 cut-off events. [2025-04-13 20:19:26,882 INFO L117 PetriNetUnfolderBase]: For 116773/117283 co-relation queries the response was YES. [2025-04-13 20:19:26,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68483 conditions, 16146 events. 10314/16146 cut-off events. For 116773/117283 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 111379 event pairs, 2758 based on Foata normal form. 258/16279 useless extension candidates. Maximal degree in co-relation 53995. Up to 6211 conditions per place. [2025-04-13 20:19:26,949 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 101 selfloop transitions, 126 changer transitions 50/290 dead transitions. [2025-04-13 20:19:26,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 290 transitions, 3977 flow [2025-04-13 20:19:26,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 20:19:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-13 20:19:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 361 transitions. [2025-04-13 20:19:26,950 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.546969696969697 [2025-04-13 20:19:26,950 INFO L175 Difference]: Start difference. First operand has 123 places, 180 transitions, 2735 flow. Second operand 12 states and 361 transitions. [2025-04-13 20:19:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 290 transitions, 3977 flow [2025-04-13 20:19:27,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 290 transitions, 3811 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-04-13 20:19:27,065 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 2700 flow [2025-04-13 20:19:27,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2700, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2025-04-13 20:19:27,065 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 71 predicate places. [2025-04-13 20:19:27,065 INFO L485 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 2700 flow [2025-04-13 20:19:27,066 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:27,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:27,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:27,066 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-13 20:19:27,066 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:27,066 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash 578823921, now seen corresponding path program 3 times [2025-04-13 20:19:27,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:27,066 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021616308] [2025-04-13 20:19:27,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:19:27,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:27,071 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:27,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:27,075 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:19:27,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:27,148 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021616308] [2025-04-13 20:19:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021616308] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:27,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 20:19:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214249776] [2025-04-13 20:19:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:27,149 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 20:19:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:27,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 20:19:27,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-13 20:19:27,152 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:27,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 171 transitions, 2700 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:27,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:27,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:27,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:28,276 INFO L116 PetriNetUnfolderBase]: 10169/15991 cut-off events. [2025-04-13 20:19:28,277 INFO L117 PetriNetUnfolderBase]: For 126840/127504 co-relation queries the response was YES. [2025-04-13 20:19:28,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68389 conditions, 15991 events. 10169/15991 cut-off events. For 126840/127504 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 111138 event pairs, 2716 based on Foata normal form. 484/16343 useless extension candidates. Maximal degree in co-relation 54158. Up to 6189 conditions per place. [2025-04-13 20:19:28,344 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 110 selfloop transitions, 126 changer transitions 37/286 dead transitions. [2025-04-13 20:19:28,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 286 transitions, 3966 flow [2025-04-13 20:19:28,344 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 20:19:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-13 20:19:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2025-04-13 20:19:28,345 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.556060606060606 [2025-04-13 20:19:28,345 INFO L175 Difference]: Start difference. First operand has 131 places, 171 transitions, 2700 flow. Second operand 12 states and 367 transitions. [2025-04-13 20:19:28,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 286 transitions, 3966 flow [2025-04-13 20:19:28,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 286 transitions, 3694 flow, removed 9 selfloop flow, removed 8 redundant places. [2025-04-13 20:19:28,441 INFO L231 Difference]: Finished difference. Result has 133 places, 170 transitions, 2664 flow [2025-04-13 20:19:28,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2664, PETRI_PLACES=133, PETRI_TRANSITIONS=170} [2025-04-13 20:19:28,442 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 73 predicate places. [2025-04-13 20:19:28,442 INFO L485 AbstractCegarLoop]: Abstraction has has 133 places, 170 transitions, 2664 flow [2025-04-13 20:19:28,442 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:28,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:28,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:28,442 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-13 20:19:28,443 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:28,443 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1218605256, now seen corresponding path program 12 times [2025-04-13 20:19:28,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:28,443 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239813385] [2025-04-13 20:19:28,443 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 20:19:28,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:28,447 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:28,449 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:28,449 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 20:19:28,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:28,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239813385] [2025-04-13 20:19:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239813385] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:28,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:28,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-13 20:19:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903463065] [2025-04-13 20:19:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:28,504 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 20:19:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:28,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 20:19:28,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-04-13 20:19:28,506 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:28,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 170 transitions, 2664 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:28,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:28,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:28,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:29,372 INFO L116 PetriNetUnfolderBase]: 8274/12918 cut-off events. [2025-04-13 20:19:29,372 INFO L117 PetriNetUnfolderBase]: For 97801/98445 co-relation queries the response was YES. [2025-04-13 20:19:29,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54929 conditions, 12918 events. 8274/12918 cut-off events. For 97801/98445 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 85937 event pairs, 2404 based on Foata normal form. 322/13123 useless extension candidates. Maximal degree in co-relation 43284. Up to 5336 conditions per place. [2025-04-13 20:19:29,420 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 83 selfloop transitions, 112 changer transitions 22/226 dead transitions. [2025-04-13 20:19:29,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 226 transitions, 3331 flow [2025-04-13 20:19:29,421 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 20:19:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 20:19:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 268 transitions. [2025-04-13 20:19:29,422 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5414141414141415 [2025-04-13 20:19:29,422 INFO L175 Difference]: Start difference. First operand has 133 places, 170 transitions, 2664 flow. Second operand 9 states and 268 transitions. [2025-04-13 20:19:29,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 226 transitions, 3331 flow [2025-04-13 20:19:29,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 226 transitions, 3282 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-13 20:19:29,496 INFO L231 Difference]: Finished difference. Result has 138 places, 148 transitions, 2441 flow [2025-04-13 20:19:29,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2441, PETRI_PLACES=138, PETRI_TRANSITIONS=148} [2025-04-13 20:19:29,496 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 78 predicate places. [2025-04-13 20:19:29,496 INFO L485 AbstractCegarLoop]: Abstraction has has 138 places, 148 transitions, 2441 flow [2025-04-13 20:19:29,497 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:29,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:29,497 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-13 20:19:29,497 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:29,497 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 466392006, now seen corresponding path program 2 times [2025-04-13 20:19:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:29,497 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25098312] [2025-04-13 20:19:29,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:19:29,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:29,501 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:29,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:29,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:29,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:29,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:29,561 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25098312] [2025-04-13 20:19:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25098312] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410167052] [2025-04-13 20:19:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:29,562 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:29,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:29,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:29,570 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:29,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 148 transitions, 2441 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:29,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:29,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:29,892 INFO L116 PetriNetUnfolderBase]: 1782/3178 cut-off events. [2025-04-13 20:19:29,893 INFO L117 PetriNetUnfolderBase]: For 31107/31599 co-relation queries the response was YES. [2025-04-13 20:19:29,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15473 conditions, 3178 events. 1782/3178 cut-off events. For 31107/31599 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19244 event pairs, 376 based on Foata normal form. 254/3406 useless extension candidates. Maximal degree in co-relation 13234. Up to 838 conditions per place. [2025-04-13 20:19:29,903 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 58 selfloop transitions, 26 changer transitions 70/163 dead transitions. [2025-04-13 20:19:29,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 163 transitions, 2357 flow [2025-04-13 20:19:29,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2025-04-13 20:19:29,904 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2025-04-13 20:19:29,904 INFO L175 Difference]: Start difference. First operand has 138 places, 148 transitions, 2441 flow. Second operand 8 states and 235 transitions. [2025-04-13 20:19:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 163 transitions, 2357 flow [2025-04-13 20:19:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 2056 flow, removed 12 selfloop flow, removed 21 redundant places. [2025-04-13 20:19:29,925 INFO L231 Difference]: Finished difference. Result has 126 places, 64 transitions, 651 flow [2025-04-13 20:19:29,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=126, PETRI_TRANSITIONS=64} [2025-04-13 20:19:29,926 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 66 predicate places. [2025-04-13 20:19:29,926 INFO L485 AbstractCegarLoop]: Abstraction has has 126 places, 64 transitions, 651 flow [2025-04-13 20:19:29,926 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:29,926 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:29,926 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-13 20:19:29,926 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:29,927 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:29,927 INFO L85 PathProgramCache]: Analyzing trace with hash 171795720, now seen corresponding path program 3 times [2025-04-13 20:19:29,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:29,927 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264322763] [2025-04-13 20:19:29,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:19:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:29,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:19:29,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:29,933 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:19:29,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:29,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:29,993 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264322763] [2025-04-13 20:19:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264322763] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:29,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:29,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-13 20:19:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451800148] [2025-04-13 20:19:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:29,993 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 20:19:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:29,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 20:19:29,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-04-13 20:19:29,999 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:29,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 64 transitions, 651 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:29,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:29,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:30,144 INFO L116 PetriNetUnfolderBase]: 441/826 cut-off events. [2025-04-13 20:19:30,144 INFO L117 PetriNetUnfolderBase]: For 4984/4996 co-relation queries the response was YES. [2025-04-13 20:19:30,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 826 events. 441/826 cut-off events. For 4984/4996 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3501 event pairs, 56 based on Foata normal form. 24/849 useless extension candidates. Maximal degree in co-relation 1998. Up to 194 conditions per place. [2025-04-13 20:19:30,147 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 50 selfloop transitions, 18 changer transitions 17/94 dead transitions. [2025-04-13 20:19:30,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 94 transitions, 933 flow [2025-04-13 20:19:30,147 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:19:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:19:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2025-04-13 20:19:30,147 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2025-04-13 20:19:30,148 INFO L175 Difference]: Start difference. First operand has 126 places, 64 transitions, 651 flow. Second operand 8 states and 202 transitions. [2025-04-13 20:19:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 94 transitions, 933 flow [2025-04-13 20:19:30,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 623 flow, removed 43 selfloop flow, removed 38 redundant places. [2025-04-13 20:19:30,151 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 281 flow [2025-04-13 20:19:30,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2025-04-13 20:19:30,152 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2025-04-13 20:19:30,152 INFO L485 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 281 flow [2025-04-13 20:19:30,152 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:30,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:30,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:30,152 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-13 20:19:30,152 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 20:19:30,152 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash -378713922, now seen corresponding path program 4 times [2025-04-13 20:19:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:30,152 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526139064] [2025-04-13 20:19:30,152 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 20:19:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:30,156 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-13 20:19:30,164 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:19:30,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 20:19:30,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:30,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:30,242 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526139064] [2025-04-13 20:19:30,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526139064] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:30,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:30,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 20:19:30,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656959467] [2025-04-13 20:19:30,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:30,243 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 20:19:30,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:30,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 20:19:30,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-13 20:19:30,244 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2025-04-13 20:19:30,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:30,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:30,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2025-04-13 20:19:30,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:30,362 INFO L116 PetriNetUnfolderBase]: 96/221 cut-off events. [2025-04-13 20:19:30,362 INFO L117 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2025-04-13 20:19:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 221 events. 96/221 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 584 event pairs, 16 based on Foata normal form. 8/228 useless extension candidates. Maximal degree in co-relation 507. Up to 58 conditions per place. [2025-04-13 20:19:30,363 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2025-04-13 20:19:30,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 62 transitions, 408 flow [2025-04-13 20:19:30,363 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 20:19:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 20:19:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2025-04-13 20:19:30,363 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2025-04-13 20:19:30,363 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 281 flow. Second operand 9 states and 189 transitions. [2025-04-13 20:19:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 62 transitions, 408 flow [2025-04-13 20:19:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 319 flow, removed 1 selfloop flow, removed 20 redundant places. [2025-04-13 20:19:30,364 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2025-04-13 20:19:30,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2025-04-13 20:19:30,365 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2025-04-13 20:19:30,365 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2025-04-13 20:19:30,365 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:30,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-13 20:19:30,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-13 20:19:30,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 20:19:30,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-13 20:19:30,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-13 20:19:30,367 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-04-13 20:19:30,367 INFO L422 BasicCegarLoop]: Path program histogram: [12, 4, 3, 1] [2025-04-13 20:19:30,369 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 20:19:30,369 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 20:19:30,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 08:19:30 BasicIcfg [2025-04-13 20:19:30,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 20:19:30,374 INFO L158 Benchmark]: Toolchain (without parser) took 30295.40ms. Allocated memory was 142.6MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 102.3MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.20ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 87.9MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.28ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 85.6MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: Boogie Preprocessor took 29.14ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: RCFGBuilder took 508.51ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 41.1MB in the end (delta: 42.6MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 20:19:30,375 INFO L158 Benchmark]: TraceAbstraction took 29523.45ms. Allocated memory was 142.6MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 40.1MB in the beginning and 2.4GB in the end (delta: -2.4GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2025-04-13 20:19:30,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.20ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 87.9MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.28ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 85.6MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.14ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 508.51ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 41.1MB in the end (delta: 42.6MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 29523.45ms. Allocated memory was 142.6MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 40.1MB in the beginning and 2.4GB in the end (delta: -2.4GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 86 locations, 91 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.4s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 26.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1432 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 378 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5754 IncrementalHoareTripleChecker+Invalid, 6132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 378 mSolverCounterUnsat, 14 mSDtfsCounter, 5754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2735occurred in iteration=14, InterpolantAutomatonStates: 150, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 899 NumberOfCodeBlocks, 899 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 879 ConstructedInterpolants, 0 QuantifiedInterpolants, 2203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 20:19:30,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...