/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-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:18:46,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:18:46,650 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 20:18:46,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:18:46,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:18:46,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:18:46,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:18:46,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:18:46,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:18:46,682 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:18:46,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:18:46,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:18:46,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:18:46,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:18:46,682 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:18:46,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:18:46,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:18:46,683 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:18:46,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:18:46,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:18:46,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:18:46,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:18:46,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:18:46,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:18:46,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:18:46,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:18:46,685 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 20:18:46,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:18:46,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:18:46,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:18:46,889 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:18:46,891 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:18:46,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2025-04-13 20:18:48,133 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6e04f01/4e63fdc98e6145c6b49980985d4bc411/FLAGfc543f222 [2025-04-13 20:18:48,325 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:18:48,326 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2025-04-13 20:18:48,332 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6e04f01/4e63fdc98e6145c6b49980985d4bc411/FLAGfc543f222 [2025-04-13 20:18:49,334 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6e04f01/4e63fdc98e6145c6b49980985d4bc411 [2025-04-13 20:18:49,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:18:49,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:18:49,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:18:49,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:18:49,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:18:49,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21714220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49, skipping insertion in model container [2025-04-13 20:18:49,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:18:49,511 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-3.wvr.c[2331,2344] [2025-04-13 20:18:49,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:18:49,522 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:18:49,551 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-3.wvr.c[2331,2344] [2025-04-13 20:18:49,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:18:49,565 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:18:49,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49 WrapperNode [2025-04-13 20:18:49,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:18:49,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:18:49,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:18:49,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:18:49,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,599 INFO L138 Inliner]: procedures = 19, calls = 14, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 140 [2025-04-13 20:18:49,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:18:49,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:18:49,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:18:49,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:18:49,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,619 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 20:18:49,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:18:49,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:18:49,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:18:49,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:18:49,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (1/1) ... [2025-04-13 20:18:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:18:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:18:49,659 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 20:18:49,660 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 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:18:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:18:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:18:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:18:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:18:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:18:49,676 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 20:18:49,746 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:18:49,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:18:49,945 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:18:49,946 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:18:49,946 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:18:50,089 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:18:50,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:18:50 BoogieIcfgContainer [2025-04-13 20:18:50,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:18:50,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:18:50,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:18:50,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:18:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:18:49" (1/3) ... [2025-04-13 20:18:50,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497513b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:18:50, skipping insertion in model container [2025-04-13 20:18:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:18:49" (2/3) ... [2025-04-13 20:18:50,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497513b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:18:50, skipping insertion in model container [2025-04-13 20:18:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:18:50" (3/3) ... [2025-04-13 20:18:50,096 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2025-04-13 20:18:50,107 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:18:50,109 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-3.wvr.c that has 4 procedures, 43 locations, 41 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:18:50,109 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:18:50,155 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 20:18:50,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 44 transitions, 109 flow [2025-04-13 20:18:50,217 INFO L116 PetriNetUnfolderBase]: 2/41 cut-off events. [2025-04-13 20:18:50,219 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 20:18:50,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 2/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-04-13 20:18:50,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 44 transitions, 109 flow [2025-04-13 20:18:50,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 40 transitions, 98 flow [2025-04-13 20:18:50,229 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:18:50,240 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;@286c58ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:18:50,240 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 20:18:50,253 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:18:50,253 INFO L116 PetriNetUnfolderBase]: 2/39 cut-off events. [2025-04-13 20:18:50,253 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 20:18:50,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:50,254 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] [2025-04-13 20:18:50,254 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 1 more)] === [2025-04-13 20:18:50,260 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash 304603884, now seen corresponding path program 1 times [2025-04-13 20:18:50,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:50,265 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44314999] [2025-04-13 20:18:50,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:18:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:50,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 20:18:50,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 20:18:50,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:18:50,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:50,541 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 20:18:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:50,542 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44314999] [2025-04-13 20:18:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44314999] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:18:50,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896874423] [2025-04-13 20:18:50,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:50,549 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:18:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:50,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:18:50,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:18:50,582 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-04-13 20:18:50,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:18:50,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:50,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-04-13 20:18:50,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:50,871 INFO L116 PetriNetUnfolderBase]: 1682/2522 cut-off events. [2025-04-13 20:18:50,872 INFO L117 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-04-13 20:18:50,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 2522 events. 1682/2522 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12598 event pairs, 880 based on Foata normal form. 1/2300 useless extension candidates. Maximal degree in co-relation 4681. Up to 1358 conditions per place. [2025-04-13 20:18:50,887 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 48 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2025-04-13 20:18:50,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 262 flow [2025-04-13 20:18:50,889 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:18:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:18:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-04-13 20:18:50,898 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-13 20:18:50,900 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 98 flow. Second operand 3 states and 88 transitions. [2025-04-13 20:18:50,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 262 flow [2025-04-13 20:18:50,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-13 20:18:50,911 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 111 flow [2025-04-13 20:18:50,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2025-04-13 20:18:50,916 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2025-04-13 20:18:50,917 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 111 flow [2025-04-13 20:18:50,918 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:18:50,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:50,918 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] [2025-04-13 20:18:50,918 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:18:50,918 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 1 more)] === [2025-04-13 20:18:50,919 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:50,919 INFO L85 PathProgramCache]: Analyzing trace with hash 780053395, now seen corresponding path program 1 times [2025-04-13 20:18:50,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:50,919 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768648523] [2025-04-13 20:18:50,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:18:50,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:50,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:50,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:50,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:18:50,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:50,988 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 20:18:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:50,988 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768648523] [2025-04-13 20:18:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768648523] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:18:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507798875] [2025-04-13 20:18:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:50,989 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:18:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:50,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:18:50,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:18:50,994 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-04-13 20:18:50,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:18:50,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:50,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-04-13 20:18:50,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:51,173 INFO L116 PetriNetUnfolderBase]: 1387/2196 cut-off events. [2025-04-13 20:18:51,173 INFO L117 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-04-13 20:18:51,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 2196 events. 1387/2196 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11110 event pairs, 1106 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 3170. Up to 1816 conditions per place. [2025-04-13 20:18:51,180 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 40 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-04-13 20:18:51,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 229 flow [2025-04-13 20:18:51,181 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:18:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:18:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-04-13 20:18:51,182 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2025-04-13 20:18:51,182 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 111 flow. Second operand 3 states and 80 transitions. [2025-04-13 20:18:51,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 229 flow [2025-04-13 20:18:51,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:18:51,184 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 125 flow [2025-04-13 20:18:51,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2025-04-13 20:18:51,185 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2025-04-13 20:18:51,186 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 125 flow [2025-04-13 20:18:51,186 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:18:51,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:51,186 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] [2025-04-13 20:18:51,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:18:51,186 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 1 more)] === [2025-04-13 20:18:51,187 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash 238517982, now seen corresponding path program 1 times [2025-04-13 20:18:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:51,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996612365] [2025-04-13 20:18:51,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:18:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:51,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:51,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:51,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:18:51,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:51,338 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 20:18:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:51,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996612365] [2025-04-13 20:18:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996612365] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:51,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:51,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:18:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701947414] [2025-04-13 20:18:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:51,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 20:18:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:51,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 20:18:51,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 20:18:51,342 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:51,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 20:18:51,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:51,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:51,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:51,645 INFO L116 PetriNetUnfolderBase]: 1478/2495 cut-off events. [2025-04-13 20:18:51,646 INFO L117 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-04-13 20:18:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 2495 events. 1478/2495 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14409 event pairs, 365 based on Foata normal form. 16/2504 useless extension candidates. Maximal degree in co-relation 3447. Up to 949 conditions per place. [2025-04-13 20:18:51,655 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 60 selfloop transitions, 21 changer transitions 1/93 dead transitions. [2025-04-13 20:18:51,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 93 transitions, 408 flow [2025-04-13 20:18:51,656 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 20:18:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 20:18:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2025-04-13 20:18:51,657 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-04-13 20:18:51,657 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 125 flow. Second operand 6 states and 156 transitions. [2025-04-13 20:18:51,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 93 transitions, 408 flow [2025-04-13 20:18:51,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:18:51,660 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 196 flow [2025-04-13 20:18:51,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2025-04-13 20:18:51,660 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-04-13 20:18:51,660 INFO L485 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 196 flow [2025-04-13 20:18:51,660 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 20:18:51,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:51,662 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] [2025-04-13 20:18:51,662 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 20:18:51,662 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 1 more)] === [2025-04-13 20:18:51,663 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash 928923556, now seen corresponding path program 2 times [2025-04-13 20:18:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:51,664 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372986553] [2025-04-13 20:18:51,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:18:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:51,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:51,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:51,688 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:18:51,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:51,845 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 20:18:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:51,845 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372986553] [2025-04-13 20:18:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372986553] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:51,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:51,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:18:51,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952031565] [2025-04-13 20:18:51,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:51,845 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:18:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:51,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:18:51,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:18:51,849 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:51,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:51,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:51,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:51,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:52,163 INFO L116 PetriNetUnfolderBase]: 1955/3341 cut-off events. [2025-04-13 20:18:52,163 INFO L117 PetriNetUnfolderBase]: For 930/950 co-relation queries the response was YES. [2025-04-13 20:18:52,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 3341 events. 1955/3341 cut-off events. For 930/950 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20447 event pairs, 537 based on Foata normal form. 52/3388 useless extension candidates. Maximal degree in co-relation 5725. Up to 1206 conditions per place. [2025-04-13 20:18:52,175 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 63 selfloop transitions, 23 changer transitions 9/106 dead transitions. [2025-04-13 20:18:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 539 flow [2025-04-13 20:18:52,175 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:18:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:18:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2025-04-13 20:18:52,176 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-04-13 20:18:52,176 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 196 flow. Second operand 5 states and 143 transitions. [2025-04-13 20:18:52,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 539 flow [2025-04-13 20:18:52,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:18:52,182 INFO L231 Difference]: Finished difference. Result has 56 places, 67 transitions, 323 flow [2025-04-13 20:18:52,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=56, PETRI_TRANSITIONS=67} [2025-04-13 20:18:52,183 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2025-04-13 20:18:52,183 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 67 transitions, 323 flow [2025-04-13 20:18:52,183 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:52,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:52,183 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] [2025-04-13 20:18:52,183 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 20:18:52,184 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 1 more)] === [2025-04-13 20:18:52,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 357681536, now seen corresponding path program 3 times [2025-04-13 20:18:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:52,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578900127] [2025-04-13 20:18:52,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:18:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:52,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:52,200 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:52,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:18:52,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:52,224 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 20:18:52,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:52,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578900127] [2025-04-13 20:18:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578900127] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:18:52,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888920276] [2025-04-13 20:18:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:52,225 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:18:52,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:52,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:18:52,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:18:52,227 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2025-04-13 20:18:52,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:18:52,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:52,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2025-04-13 20:18:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:52,475 INFO L116 PetriNetUnfolderBase]: 2286/3731 cut-off events. [2025-04-13 20:18:52,475 INFO L117 PetriNetUnfolderBase]: For 3695/3695 co-relation queries the response was YES. [2025-04-13 20:18:52,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10582 conditions, 3731 events. 2286/3731 cut-off events. For 3695/3695 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21677 event pairs, 1479 based on Foata normal form. 54/3782 useless extension candidates. Maximal degree in co-relation 7371. Up to 3153 conditions per place. [2025-04-13 20:18:52,490 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2025-04-13 20:18:52,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 86 transitions, 575 flow [2025-04-13 20:18:52,491 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:18:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:18:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-04-13 20:18:52,492 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-04-13 20:18:52,492 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 323 flow. Second operand 3 states and 78 transitions. [2025-04-13 20:18:52,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 86 transitions, 575 flow [2025-04-13 20:18:52,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 566 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-13 20:18:52,503 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 326 flow [2025-04-13 20:18:52,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2025-04-13 20:18:52,505 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2025-04-13 20:18:52,505 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 326 flow [2025-04-13 20:18:52,505 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:18:52,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:52,505 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] [2025-04-13 20:18:52,505 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 20:18:52,506 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 1 more)] === [2025-04-13 20:18:52,506 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -169104408, now seen corresponding path program 4 times [2025-04-13 20:18:52,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:52,506 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225103360] [2025-04-13 20:18:52,506 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 20:18:52,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:52,515 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-04-13 20:18:52,528 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:52,529 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 20:18:52,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:52,705 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 20:18:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:52,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225103360] [2025-04-13 20:18:52,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225103360] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:52,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:52,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:18:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428646508] [2025-04-13 20:18:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:52,706 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:18:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:52,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:18:52,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:18:52,712 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:52,971 INFO L116 PetriNetUnfolderBase]: 1766/3084 cut-off events. [2025-04-13 20:18:52,971 INFO L117 PetriNetUnfolderBase]: For 3085/3126 co-relation queries the response was YES. [2025-04-13 20:18:52,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 3084 events. 1766/3084 cut-off events. For 3085/3126 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18849 event pairs, 520 based on Foata normal form. 96/3171 useless extension candidates. Maximal degree in co-relation 6200. Up to 1216 conditions per place. [2025-04-13 20:18:52,984 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 60 selfloop transitions, 24 changer transitions 10/105 dead transitions. [2025-04-13 20:18:52,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 652 flow [2025-04-13 20:18:52,984 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:18:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:18:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-04-13 20:18:52,986 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-04-13 20:18:52,986 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 326 flow. Second operand 5 states and 140 transitions. [2025-04-13 20:18:52,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 652 flow [2025-04-13 20:18:52,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 105 transitions, 648 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:18:52,991 INFO L231 Difference]: Finished difference. Result has 61 places, 68 transitions, 385 flow [2025-04-13 20:18:52,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2025-04-13 20:18:52,992 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-04-13 20:18:52,993 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 385 flow [2025-04-13 20:18:52,993 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:52,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:52,993 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] [2025-04-13 20:18:52,993 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 20:18:52,993 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 1 more)] === [2025-04-13 20:18:52,994 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1083657722, now seen corresponding path program 5 times [2025-04-13 20:18:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:52,994 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999720988] [2025-04-13 20:18:52,995 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 20:18:52,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:53,001 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:53,008 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:53,010 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:18:53,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:53,097 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 20:18:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:53,097 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999720988] [2025-04-13 20:18:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999720988] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:53,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:53,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:18:53,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88666972] [2025-04-13 20:18:53,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:53,097 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:18:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:53,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:18:53,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:18:53,100 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:53,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:53,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:53,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:53,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:53,275 INFO L116 PetriNetUnfolderBase]: 862/1553 cut-off events. [2025-04-13 20:18:53,275 INFO L117 PetriNetUnfolderBase]: For 2039/2061 co-relation queries the response was YES. [2025-04-13 20:18:53,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 1553 events. 862/1553 cut-off events. For 2039/2061 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8185 event pairs, 261 based on Foata normal form. 58/1592 useless extension candidates. Maximal degree in co-relation 4034. Up to 728 conditions per place. [2025-04-13 20:18:53,280 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 48 selfloop transitions, 23 changer transitions 15/95 dead transitions. [2025-04-13 20:18:53,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 650 flow [2025-04-13 20:18:53,281 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:18:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:18:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-04-13 20:18:53,281 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2025-04-13 20:18:53,281 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 385 flow. Second operand 5 states and 135 transitions. [2025-04-13 20:18:53,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 650 flow [2025-04-13 20:18:53,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 608 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-04-13 20:18:53,284 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 362 flow [2025-04-13 20:18:53,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2025-04-13 20:18:53,285 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2025-04-13 20:18:53,285 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 362 flow [2025-04-13 20:18:53,285 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 20:18:53,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:53,285 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] [2025-04-13 20:18:53,285 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 20:18:53,285 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 1 more)] === [2025-04-13 20:18:53,286 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash -687982566, now seen corresponding path program 6 times [2025-04-13 20:18:53,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:53,286 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640768494] [2025-04-13 20:18:53,286 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 20:18:53,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:53,291 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:53,295 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:53,296 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 20:18:53,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:53,387 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 20:18:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:53,387 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640768494] [2025-04-13 20:18:53,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640768494] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:53,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:53,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:18:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023367666] [2025-04-13 20:18:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:53,387 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 20:18:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:53,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 20:18:53,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 20:18:53,393 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:53,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 20:18:53,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:53,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:53,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:53,571 INFO L116 PetriNetUnfolderBase]: 709/1316 cut-off events. [2025-04-13 20:18:53,571 INFO L117 PetriNetUnfolderBase]: For 2197/2225 co-relation queries the response was YES. [2025-04-13 20:18:53,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1316 events. 709/1316 cut-off events. For 2197/2225 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6985 event pairs, 186 based on Foata normal form. 38/1333 useless extension candidates. Maximal degree in co-relation 1514. Up to 448 conditions per place. [2025-04-13 20:18:53,579 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 53 selfloop transitions, 26 changer transitions 8/96 dead transitions. [2025-04-13 20:18:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 658 flow [2025-04-13 20:18:53,579 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 20:18:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 20:18:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2025-04-13 20:18:53,580 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-04-13 20:18:53,580 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 362 flow. Second operand 6 states and 152 transitions. [2025-04-13 20:18:53,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 658 flow [2025-04-13 20:18:53,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 624 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 20:18:53,584 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 371 flow [2025-04-13 20:18:53,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2025-04-13 20:18:53,585 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2025-04-13 20:18:53,585 INFO L485 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 371 flow [2025-04-13 20:18:53,585 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 20:18:53,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:53,585 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] [2025-04-13 20:18:53,585 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 20:18:53,586 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 1 more)] === [2025-04-13 20:18:53,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1984015942, now seen corresponding path program 7 times [2025-04-13 20:18:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:53,586 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899415665] [2025-04-13 20:18:53,586 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 20:18:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:53,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:53,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:53,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:18:53,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:53,675 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 20:18:53,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:53,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899415665] [2025-04-13 20:18:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899415665] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:53,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:53,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:18:53,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916035671] [2025-04-13 20:18:53,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:53,676 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:18:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:53,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:18:53,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:18:53,679 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:53,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:53,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:53,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:53,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:53,886 INFO L116 PetriNetUnfolderBase]: 664/1238 cut-off events. [2025-04-13 20:18:53,887 INFO L117 PetriNetUnfolderBase]: For 2717/2742 co-relation queries the response was YES. [2025-04-13 20:18:53,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1238 events. 664/1238 cut-off events. For 2717/2742 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6503 event pairs, 174 based on Foata normal form. 30/1253 useless extension candidates. Maximal degree in co-relation 1497. Up to 412 conditions per place. [2025-04-13 20:18:53,893 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 50 selfloop transitions, 24 changer transitions 14/97 dead transitions. [2025-04-13 20:18:53,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 683 flow [2025-04-13 20:18:53,893 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:18:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:18:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2025-04-13 20:18:53,894 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-04-13 20:18:53,894 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 371 flow. Second operand 8 states and 180 transitions. [2025-04-13 20:18:53,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 683 flow [2025-04-13 20:18:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 625 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-04-13 20:18:53,900 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 354 flow [2025-04-13 20:18:53,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=354, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-04-13 20:18:53,901 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2025-04-13 20:18:53,901 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 354 flow [2025-04-13 20:18:53,901 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:53,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:53,901 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] [2025-04-13 20:18:53,901 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 20:18:53,901 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 1 more)] === [2025-04-13 20:18:53,902 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash -62003648, now seen corresponding path program 8 times [2025-04-13 20:18:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:53,902 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120054884] [2025-04-13 20:18:53,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:18:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:53,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:53,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:53,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:18:53,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:53,990 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 20:18:53,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:53,991 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120054884] [2025-04-13 20:18:53,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120054884] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:53,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:53,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:18:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481331421] [2025-04-13 20:18:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:53,991 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:18:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:53,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:18:53,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:18:53,995 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:53,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:53,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:53,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:53,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:54,174 INFO L116 PetriNetUnfolderBase]: 485/943 cut-off events. [2025-04-13 20:18:54,174 INFO L117 PetriNetUnfolderBase]: For 1858/1870 co-relation queries the response was YES. [2025-04-13 20:18:54,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 943 events. 485/943 cut-off events. For 1858/1870 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4622 event pairs, 119 based on Foata normal form. 44/986 useless extension candidates. Maximal degree in co-relation 1152. Up to 303 conditions per place. [2025-04-13 20:18:54,177 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 40 selfloop transitions, 14 changer transitions 34/96 dead transitions. [2025-04-13 20:18:54,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 692 flow [2025-04-13 20:18:54,178 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:18:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:18:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2025-04-13 20:18:54,179 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2025-04-13 20:18:54,180 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 354 flow. Second operand 8 states and 181 transitions. [2025-04-13 20:18:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 692 flow [2025-04-13 20:18:54,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 628 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-04-13 20:18:54,182 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 230 flow [2025-04-13 20:18:54,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=230, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2025-04-13 20:18:54,183 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2025-04-13 20:18:54,183 INFO L485 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 230 flow [2025-04-13 20:18:54,184 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:54,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:18:54,184 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] [2025-04-13 20:18:54,184 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-13 20:18:54,184 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 1 more)] === [2025-04-13 20:18:54,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:18:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -666987349, now seen corresponding path program 2 times [2025-04-13 20:18:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:18:54,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723894837] [2025-04-13 20:18:54,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:18:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:18:54,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-04-13 20:18:54,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 20:18:54,197 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:18:54,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:18:54,279 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 20:18:54,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:18:54,279 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723894837] [2025-04-13 20:18:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723894837] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:18:54,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:18:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:18:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429856058] [2025-04-13 20:18:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:18:54,279 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:18:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:18:54,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:18:54,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:18:54,284 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2025-04-13 20:18:54,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:54,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:18:54,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2025-04-13 20:18:54,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:18:54,361 INFO L116 PetriNetUnfolderBase]: 61/153 cut-off events. [2025-04-13 20:18:54,362 INFO L117 PetriNetUnfolderBase]: For 324/330 co-relation queries the response was YES. [2025-04-13 20:18:54,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 153 events. 61/153 cut-off events. For 324/330 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 448 event pairs, 17 based on Foata normal form. 12/161 useless extension candidates. Maximal degree in co-relation 378. Up to 46 conditions per place. [2025-04-13 20:18:54,362 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2025-04-13 20:18:54,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 320 flow [2025-04-13 20:18:54,362 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:18:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:18:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2025-04-13 20:18:54,363 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2025-04-13 20:18:54,363 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 230 flow. Second operand 8 states and 139 transitions. [2025-04-13 20:18:54,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 320 flow [2025-04-13 20:18:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 233 flow, removed 13 selfloop flow, removed 15 redundant places. [2025-04-13 20:18:54,364 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2025-04-13 20:18:54,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2025-04-13 20:18:54,365 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2025-04-13 20:18:54,365 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2025-04-13 20:18:54,365 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 20:18:54,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 20:18:54,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 20:18:54,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 20:18:54,367 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 20:18:54,367 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-13 20:18:54,367 INFO L422 BasicCegarLoop]: Path program histogram: [8, 2, 1] [2025-04-13 20:18:54,369 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 20:18:54,369 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 20:18:54,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 08:18:54 BasicIcfg [2025-04-13 20:18:54,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 20:18:54,373 INFO L158 Benchmark]: Toolchain (without parser) took 5036.30ms. Allocated memory was 142.6MB in the beginning and 415.2MB in the end (delta: 272.6MB). Free memory was 98.8MB in the beginning and 313.8MB in the end (delta: -215.0MB). Peak memory consumption was 57.4MB. Max. memory is 8.0GB. [2025-04-13 20:18:54,373 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:18:54,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.45ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 84.4MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 20:18:54,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.48ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 82.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 20:18:54,373 INFO L158 Benchmark]: Boogie Preprocessor took 34.87ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 81.1MB in the end (delta: 897.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:18:54,374 INFO L158 Benchmark]: RCFGBuilder took 455.20ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 45.2MB in the end (delta: 35.0MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-13 20:18:54,374 INFO L158 Benchmark]: TraceAbstraction took 4281.40ms. Allocated memory was 142.6MB in the beginning and 415.2MB in the end (delta: 272.6MB). Free memory was 44.3MB in the beginning and 313.8MB in the end (delta: -269.5MB). Peak memory consumption was 2.9MB. Max. memory is 8.0GB. [2025-04-13 20:18:54,375 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.45ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 84.4MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.48ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 82.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.87ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 81.1MB in the end (delta: 897.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 455.20ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 45.2MB in the end (delta: 35.0MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4281.40ms. Allocated memory was 142.6MB in the beginning and 415.2MB in the end (delta: 272.6MB). Free memory was 44.3MB in the beginning and 313.8MB in the end (delta: -269.5MB). Peak memory consumption was 2.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: 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 7 procedures, 68 locations, 71 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 326 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1552 IncrementalHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 8 mSDtfsCounter, 1552 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=6, InterpolantAutomatonStates: 60, 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 909 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 20:18:54,386 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...