/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-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:19:17,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:19:17,586 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 20:19:17,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:19:17,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:19:17,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:19:17,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:19:17,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:19:17,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:19:17,616 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:19:17,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:19:17,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:19:17,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:19:17,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:19:17,617 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:19:17,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:17,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:19:17,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:17,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:19:17,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:19:17,619 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 20:19:17,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:19:17,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:19:17,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:19:17,842 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:19:17,843 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:19:17,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2025-04-13 20:19:19,181 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df6ee17c/c3d39aef30dd4e8aaa082083943e2787/FLAGb98c3ef4a [2025-04-13 20:19:19,392 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:19:19,393 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2025-04-13 20:19:19,399 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df6ee17c/c3d39aef30dd4e8aaa082083943e2787/FLAGb98c3ef4a [2025-04-13 20:19:20,182 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df6ee17c/c3d39aef30dd4e8aaa082083943e2787 [2025-04-13 20:19:20,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:19:20,186 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:19:20,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:20,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:19:20,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:19:20,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8126d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20, skipping insertion in model container [2025-04-13 20:19:20,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:19:20,382 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-5.wvr.c[2777,2790] [2025-04-13 20:19:20,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:20,399 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:19:20,439 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-5.wvr.c[2777,2790] [2025-04-13 20:19:20,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:19:20,458 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:19:20,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20 WrapperNode [2025-04-13 20:19:20,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:19:20,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:20,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:19:20,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:19:20,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,494 INFO L138 Inliner]: procedures = 21, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 204 [2025-04-13 20:19:20,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:19:20,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:19:20,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:19:20,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:19:20,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,521 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 20:19:20,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,524 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:19:20,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:19:20,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:19:20,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:19:20,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (1/1) ... [2025-04-13 20:19:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:19:20,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:19:20,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 20:19:20,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:19:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:19:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:19:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-13 20:19:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-13 20:19:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:19:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-13 20:19:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-13 20:19:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:19:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:19:20,579 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 20:19:20,643 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:19:20,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:19:20,855 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:19:20,856 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:19:20,856 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:19:21,042 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:19:21,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:21 BoogieIcfgContainer [2025-04-13 20:19:21,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:19:21,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:19:21,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:19:21,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:19:21,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:19:20" (1/3) ... [2025-04-13 20:19:21,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7ce88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:21, skipping insertion in model container [2025-04-13 20:19:21,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:19:20" (2/3) ... [2025-04-13 20:19:21,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7ce88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:19:21, skipping insertion in model container [2025-04-13 20:19:21,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:19:21" (3/3) ... [2025-04-13 20:19:21,052 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2025-04-13 20:19:21,063 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:19:21,064 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-5.wvr.c that has 6 procedures, 63 locations, 61 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:19:21,065 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:19:21,115 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-13 20:19:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 66 transitions, 167 flow [2025-04-13 20:19:21,178 INFO L116 PetriNetUnfolderBase]: 4/61 cut-off events. [2025-04-13 20:19:21,181 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 20:19:21,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 61 events. 4/61 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-04-13 20:19:21,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 66 transitions, 167 flow [2025-04-13 20:19:21,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 150 flow [2025-04-13 20:19:21,197 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:19:21,208 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;@67541396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:19:21,209 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 20:19:21,234 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:19:21,234 INFO L116 PetriNetUnfolderBase]: 4/59 cut-off events. [2025-04-13 20:19:21,234 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 20:19:21,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:21,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:21,235 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 3 more)] === [2025-04-13 20:19:21,240 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1855615100, now seen corresponding path program 1 times [2025-04-13 20:19:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:21,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536313688] [2025-04-13 20:19:21,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:21,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-04-13 20:19:21,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-04-13 20:19:21,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:21,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:21,565 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536313688] [2025-04-13 20:19:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536313688] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:21,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:19:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114627571] [2025-04-13 20:19:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:21,571 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:19:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:21,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:19:21,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:19:21,602 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 66 [2025-04-13 20:19:21,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:21,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:21,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 66 [2025-04-13 20:19:21,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:28,463 INFO L116 PetriNetUnfolderBase]: 135266/168486 cut-off events. [2025-04-13 20:19:28,463 INFO L117 PetriNetUnfolderBase]: For 10075/10075 co-relation queries the response was YES. [2025-04-13 20:19:28,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344496 conditions, 168486 events. 135266/168486 cut-off events. For 10075/10075 co-relation queries the response was YES. Maximal size of possible extension queue 5519. Compared 965660 event pairs, 60136 based on Foata normal form. 1/147968 useless extension candidates. Maximal degree in co-relation 312605. Up to 90947 conditions per place. [2025-04-13 20:19:29,138 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 82 selfloop transitions, 7 changer transitions 1/100 dead transitions. [2025-04-13 20:19:29,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 434 flow [2025-04-13 20:19:29,139 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:19:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:19:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2025-04-13 20:19:29,146 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6868686868686869 [2025-04-13 20:19:29,147 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 150 flow. Second operand 3 states and 136 transitions. [2025-04-13 20:19:29,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 434 flow [2025-04-13 20:19:29,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 398 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-04-13 20:19:29,503 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 169 flow [2025-04-13 20:19:29,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-04-13 20:19:29,508 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2025-04-13 20:19:29,508 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 169 flow [2025-04-13 20:19:29,508 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:29,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:29,509 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:19:29,509 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 3 more)] === [2025-04-13 20:19:29,510 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash 889583629, now seen corresponding path program 1 times [2025-04-13 20:19:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:29,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246351935] [2025-04-13 20:19:29,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:29,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-04-13 20:19:29,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 20:19:29,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:29,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:29,616 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246351935] [2025-04-13 20:19:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246351935] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:29,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:29,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:19:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829013091] [2025-04-13 20:19:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:29,617 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:19:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:29,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:19:29,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:19:29,621 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 66 [2025-04-13 20:19:29,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:29,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:29,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 66 [2025-04-13 20:19:29,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:34,391 INFO L116 PetriNetUnfolderBase]: 97629/128091 cut-off events. [2025-04-13 20:19:34,391 INFO L117 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2025-04-13 20:19:34,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259461 conditions, 128091 events. 97629/128091 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 4532. Compared 804538 event pairs, 74954 based on Foata normal form. 0/124381 useless extension candidates. Maximal degree in co-relation 156143. Up to 104154 conditions per place. [2025-04-13 20:19:34,955 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 68 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2025-04-13 20:19:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 369 flow [2025-04-13 20:19:34,956 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:19:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:19:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-04-13 20:19:34,957 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-04-13 20:19:34,957 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 169 flow. Second operand 3 states and 128 transitions. [2025-04-13 20:19:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 369 flow [2025-04-13 20:19:34,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:19:34,961 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 185 flow [2025-04-13 20:19:34,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2025-04-13 20:19:34,962 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2025-04-13 20:19:34,962 INFO L485 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 185 flow [2025-04-13 20:19:34,962 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:34,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:34,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:34,962 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:19:34,962 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 3 more)] === [2025-04-13 20:19:34,963 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1944182578, now seen corresponding path program 1 times [2025-04-13 20:19:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:34,963 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199833828] [2025-04-13 20:19:34,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:19:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:34,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-04-13 20:19:34,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 20:19:34,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:19:34,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:35,237 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199833828] [2025-04-13 20:19:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199833828] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:35,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:35,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:19:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919727324] [2025-04-13 20:19:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:35,237 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:19:35,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:35,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:19:35,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:19:35,242 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2025-04-13 20:19:35,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:35,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:35,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2025-04-13 20:19:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:43,157 INFO L116 PetriNetUnfolderBase]: 147529/198619 cut-off events. [2025-04-13 20:19:43,157 INFO L117 PetriNetUnfolderBase]: For 10804/10804 co-relation queries the response was YES. [2025-04-13 20:19:43,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406036 conditions, 198619 events. 147529/198619 cut-off events. For 10804/10804 co-relation queries the response was YES. Maximal size of possible extension queue 8460. Compared 1410817 event pairs, 26395 based on Foata normal form. 882/199152 useless extension candidates. Maximal degree in co-relation 231941. Up to 60425 conditions per place. [2025-04-13 20:19:43,988 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 154 selfloop transitions, 43 changer transitions 2/216 dead transitions. [2025-04-13 20:19:43,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 216 transitions, 944 flow [2025-04-13 20:19:43,989 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:19:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:19:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 327 transitions. [2025-04-13 20:19:43,990 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7077922077922078 [2025-04-13 20:19:43,990 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 185 flow. Second operand 7 states and 327 transitions. [2025-04-13 20:19:43,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 216 transitions, 944 flow [2025-04-13 20:19:44,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 216 transitions, 934 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:19:44,114 INFO L231 Difference]: Finished difference. Result has 75 places, 105 transitions, 448 flow [2025-04-13 20:19:44,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=75, PETRI_TRANSITIONS=105} [2025-04-13 20:19:44,115 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2025-04-13 20:19:44,115 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 105 transitions, 448 flow [2025-04-13 20:19:44,115 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:44,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:19:44,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:19:44,115 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 20:19:44,115 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 3 more)] === [2025-04-13 20:19:44,116 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:19:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1410904470, now seen corresponding path program 2 times [2025-04-13 20:19:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:19:44,116 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311224824] [2025-04-13 20:19:44,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:19:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:19:44,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 1 equivalence classes. [2025-04-13 20:19:44,134 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 20:19:44,134 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:19:44,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:19:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:19:44,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:19:44,334 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311224824] [2025-04-13 20:19:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311224824] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:19:44,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:19:44,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:19:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798843633] [2025-04-13 20:19:44,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:19:44,335 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:19:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:19:44,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:19:44,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:19:44,342 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2025-04-13 20:19:44,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 105 transitions, 448 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:19:44,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:19:44,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2025-04-13 20:19:44,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:19:59,179 INFO L116 PetriNetUnfolderBase]: 239615/322161 cut-off events. [2025-04-13 20:19:59,180 INFO L117 PetriNetUnfolderBase]: For 242169/242575 co-relation queries the response was YES. [2025-04-13 20:20:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892114 conditions, 322161 events. 239615/322161 cut-off events. For 242169/242575 co-relation queries the response was YES. Maximal size of possible extension queue 13422. Compared 2370478 event pairs, 44934 based on Foata normal form. 2946/324181 useless extension candidates. Maximal degree in co-relation 508852. Up to 163645 conditions per place. [2025-04-13 20:20:00,874 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 164 selfloop transitions, 56 changer transitions 5/242 dead transitions. [2025-04-13 20:20:00,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 242 transitions, 1484 flow [2025-04-13 20:20:00,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 20:20:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 20:20:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2025-04-13 20:20:00,876 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2025-04-13 20:20:00,876 INFO L175 Difference]: Start difference. First operand has 75 places, 105 transitions, 448 flow. Second operand 5 states and 235 transitions. [2025-04-13 20:20:00,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 242 transitions, 1484 flow [2025-04-13 20:20:04,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 242 transitions, 1484 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 20:20:04,195 INFO L231 Difference]: Finished difference. Result has 82 places, 153 transitions, 998 flow [2025-04-13 20:20:04,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=998, PETRI_PLACES=82, PETRI_TRANSITIONS=153} [2025-04-13 20:20:04,196 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2025-04-13 20:20:04,196 INFO L485 AbstractCegarLoop]: Abstraction has has 82 places, 153 transitions, 998 flow [2025-04-13 20:20:04,196 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 20:20:04,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:20:04,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:20:04,196 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 20:20:04,197 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 3 more)] === [2025-04-13 20:20:04,197 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:20:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1368464624, now seen corresponding path program 3 times [2025-04-13 20:20:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:20:04,197 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806556643] [2025-04-13 20:20:04,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:20:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:20:04,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 1 equivalence classes. [2025-04-13 20:20:04,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 20:20:04,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:20:04,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:20:04,370 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 20:20:04,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:20:04,370 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806556643] [2025-04-13 20:20:04,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806556643] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:20:04,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:20:04,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:20:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326674823] [2025-04-13 20:20:04,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:20:04,371 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 20:20:04,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:20:04,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 20:20:04,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 20:20:04,375 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2025-04-13 20:20:04,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 153 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 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 20:20:04,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:20:04,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2025-04-13 20:20:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:20:25,064 INFO L116 PetriNetUnfolderBase]: 284696/384732 cut-off events. [2025-04-13 20:20:25,064 INFO L117 PetriNetUnfolderBase]: For 691057/691767 co-relation queries the response was YES. [2025-04-13 20:20:25,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269631 conditions, 384732 events. 284696/384732 cut-off events. For 691057/691767 co-relation queries the response was YES. Maximal size of possible extension queue 16094. Compared 2929363 event pairs, 42968 based on Foata normal form. 5242/389269 useless extension candidates. Maximal degree in co-relation 714472. Up to 128858 conditions per place. [2025-04-13 20:20:27,173 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 176 selfloop transitions, 118 changer transitions 0/311 dead transitions. [2025-04-13 20:20:27,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 311 transitions, 2383 flow [2025-04-13 20:20:27,174 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 20:20:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 20:20:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 286 transitions. [2025-04-13 20:20:27,174 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2025-04-13 20:20:27,175 INFO L175 Difference]: Start difference. First operand has 82 places, 153 transitions, 998 flow. Second operand 6 states and 286 transitions. [2025-04-13 20:20:27,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 311 transitions, 2383 flow [2025-04-13 20:20:30,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 311 transitions, 2362 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-04-13 20:20:30,129 INFO L231 Difference]: Finished difference. Result has 89 places, 209 transitions, 1921 flow [2025-04-13 20:20:30,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1921, PETRI_PLACES=89, PETRI_TRANSITIONS=209} [2025-04-13 20:20:30,130 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 17 predicate places. [2025-04-13 20:20:30,130 INFO L485 AbstractCegarLoop]: Abstraction has has 89 places, 209 transitions, 1921 flow [2025-04-13 20:20:30,130 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 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 20:20:30,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:20:30,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:20:30,131 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 20:20:30,131 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 3 more)] === [2025-04-13 20:20:30,131 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:20:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash -528064065, now seen corresponding path program 1 times [2025-04-13 20:20:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:20:30,131 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524740698] [2025-04-13 20:20:30,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:20:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:20:30,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-04-13 20:20:30,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 20:20:30,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:20:30,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:20:30,279 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 20:20:30,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:20:30,280 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524740698] [2025-04-13 20:20:30,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524740698] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:20:30,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:20:30,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 20:20:30,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083046424] [2025-04-13 20:20:30,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:20:30,280 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:20:30,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:20:30,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:20:30,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:20:30,286 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 66 [2025-04-13 20:20:30,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 209 transitions, 1921 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 20:20:30,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:20:30,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 66 [2025-04-13 20:20:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand