/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:57:28,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:57:28,516 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 [2025-04-14 00:57:28,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:57:28,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:57:28,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:57:28,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:57:28,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:57:28,543 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:57:28,543 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:57:28,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:57:28,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:57:28,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:57:28,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:57:28,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:57:28,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:57:28,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:57:28,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:57:28,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:57:28,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:57:28,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:57:28,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:57:28,546 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:57:28,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:57:28,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:57:28,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:57:28,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:57:28,785 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:57:28,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2025-04-14 00:57:30,065 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bd0dbb/df8239c1ad4f48eabd7a7c5ce2944cf3/FLAG0db99862a [2025-04-14 00:57:30,273 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:57:30,274 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2025-04-14 00:57:30,279 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bd0dbb/df8239c1ad4f48eabd7a7c5ce2944cf3/FLAG0db99862a [2025-04-14 00:57:31,116 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bd0dbb/df8239c1ad4f48eabd7a7c5ce2944cf3 [2025-04-14 00:57:31,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:57:31,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:57:31,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:57:31,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:57:31,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:57:31,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59eab7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31, skipping insertion in model container [2025-04-14 00:57:31,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:57:31,329 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] [2025-04-14 00:57:31,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:57:31,348 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:57:31,390 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] [2025-04-14 00:57:31,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:57:31,404 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:57:31,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31 WrapperNode [2025-04-14 00:57:31,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:57:31,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:57:31,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:57:31,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:57:31,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,444 INFO L138 Inliner]: procedures = 21, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 204 [2025-04-14 00:57:31,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:57:31,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:57:31,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:57:31,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:57:31,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,475 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]. [2025-04-14 00:57:31,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,478 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:57:31,491 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:57:31,491 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:57:31,491 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:57:31,492 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (1/1) ... [2025-04-14 00:57:31,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:57:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:57:31,536 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) [2025-04-14 00:57:31,542 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 [2025-04-14 00:57:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-14 00:57:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:57:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:57:31,560 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:57:31,647 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:57:31,650 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:57:31,902 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:57:31,903 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:57:31,903 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:57:32,124 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:57:32,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:57:32 BoogieIcfgContainer [2025-04-14 00:57:32,126 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:57:32,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:57:32,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:57:32,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:57:32,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:57:31" (1/3) ... [2025-04-14 00:57:32,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2979ccbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:57:32, skipping insertion in model container [2025-04-14 00:57:32,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:57:31" (2/3) ... [2025-04-14 00:57:32,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2979ccbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:57:32, skipping insertion in model container [2025-04-14 00:57:32,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:57:32" (3/3) ... [2025-04-14 00:57:32,135 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2025-04-14 00:57:32,145 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:57:32,146 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. [2025-04-14 00:57:32,146 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:57:32,219 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-14 00:57:32,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 66 transitions, 167 flow [2025-04-14 00:57:32,293 INFO L116 PetriNetUnfolderBase]: 4/61 cut-off events. [2025-04-14 00:57:32,298 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-14 00:57:32,302 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 110 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. [2025-04-14 00:57:32,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 66 transitions, 167 flow [2025-04-14 00:57:32,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 150 flow [2025-04-14 00:57:32,316 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:57:32,326 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;@6a2ad879, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:57:32,326 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-14 00:57:32,349 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:57:32,349 INFO L116 PetriNetUnfolderBase]: 4/59 cut-off events. [2025-04-14 00:57:32,350 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-14 00:57:32,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:32,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:32,350 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)] === [2025-04-14 00:57:32,358 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1211845417, now seen corresponding path program 1 times [2025-04-14 00:57:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:32,368 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541471115] [2025-04-14 00:57:32,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:57:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:32,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-04-14 00:57:32,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-04-14 00:57:32,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:57:32,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:32,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541471115] [2025-04-14 00:57:32,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541471115] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:32,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:57:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983851876] [2025-04-14 00:57:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:32,733 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:57:32,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:32,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:57:32,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:57:32,754 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2025-04-14 00:57:32,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:57:32,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:32,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2025-04-14 00:57:32,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:41,942 INFO L116 PetriNetUnfolderBase]: 187208/232584 cut-off events. [2025-04-14 00:57:41,942 INFO L117 PetriNetUnfolderBase]: For 10437/10437 co-relation queries the response was YES. [2025-04-14 00:57:42,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474407 conditions, 232584 events. 187208/232584 cut-off events. For 10437/10437 co-relation queries the response was YES. Maximal size of possible extension queue 6548. Compared 1319202 event pairs, 83464 based on Foata normal form. 1/204100 useless extension candidates. Maximal degree in co-relation 442513. Up to 125297 conditions per place. [2025-04-14 00:57:43,019 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 89 selfloop transitions, 7 changer transitions 1/102 dead transitions. [2025-04-14 00:57:43,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 452 flow [2025-04-14 00:57:43,020 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:57:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:57:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-04-14 00:57:43,028 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-04-14 00:57:43,028 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 150 flow. Second operand 3 states and 128 transitions. [2025-04-14 00:57:43,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 452 flow [2025-04-14 00:57:44,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 416 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-04-14 00:57:44,257 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 169 flow [2025-04-14 00:57:44,259 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} [2025-04-14 00:57:44,261 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2025-04-14 00:57:44,261 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 169 flow [2025-04-14 00:57:44,261 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:57:44,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:44,262 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] [2025-04-14 00:57:44,262 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:57:44,262 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)] === [2025-04-14 00:57:44,263 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash -276316224, now seen corresponding path program 1 times [2025-04-14 00:57:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:44,263 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045242667] [2025-04-14 00:57:44,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:57:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:44,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-04-14 00:57:44,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-14 00:57:44,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:57:44,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:44,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045242667] [2025-04-14 00:57:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045242667] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:44,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:57:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372536389] [2025-04-14 00:57:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:44,359 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:57:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:44,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:57:44,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:57:44,359 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2025-04-14 00:57:44,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:57:44,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:44,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2025-04-14 00:57:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:49,780 INFO L116 PetriNetUnfolderBase]: 113340/145735 cut-off events. [2025-04-14 00:57:49,781 INFO L117 PetriNetUnfolderBase]: For 15638/15638 co-relation queries the response was YES. [2025-04-14 00:57:49,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318453 conditions, 145735 events. 113340/145735 cut-off events. For 15638/15638 co-relation queries the response was YES. Maximal size of possible extension queue 4661. Compared 866257 event pairs, 76765 based on Foata normal form. 0/141031 useless extension candidates. Maximal degree in co-relation 156227. Up to 117441 conditions per place. [2025-04-14 00:57:50,308 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 87 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2025-04-14 00:57:50,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 443 flow [2025-04-14 00:57:50,309 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:57:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:57:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2025-04-14 00:57:50,309 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2025-04-14 00:57:50,310 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 169 flow. Second operand 3 states and 118 transitions. [2025-04-14 00:57:50,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 443 flow [2025-04-14 00:57:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 00:57:50,320 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 185 flow [2025-04-14 00:57:50,320 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} [2025-04-14 00:57:50,321 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2025-04-14 00:57:50,321 INFO L485 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 185 flow [2025-04-14 00:57:50,321 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:57:50,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:50,321 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] [2025-04-14 00:57:50,321 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:57:50,321 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)] === [2025-04-14 00:57:50,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:50,322 INFO L85 PathProgramCache]: Analyzing trace with hash 762425383, now seen corresponding path program 1 times [2025-04-14 00:57:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:50,322 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401712917] [2025-04-14 00:57:50,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:57:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:50,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-04-14 00:57:50,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-14 00:57:50,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:57:50,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:50,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:50,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401712917] [2025-04-14 00:57:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401712917] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:57:50,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:57:50,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 00:57:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732288011] [2025-04-14 00:57:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:57:50,585 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:57:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:50,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:57:50,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:57:50,585 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2025-04-14 00:57:50,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:57:50,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:50,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2025-04-14 00:57:50,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:58:01,501 INFO L116 PetriNetUnfolderBase]: 230592/297037 cut-off events. [2025-04-14 00:58:01,501 INFO L117 PetriNetUnfolderBase]: For 73571/73571 co-relation queries the response was YES. [2025-04-14 00:58:01,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658944 conditions, 297037 events. 230592/297037 cut-off events. For 73571/73571 co-relation queries the response was YES. Maximal size of possible extension queue 9460. Compared 1862580 event pairs, 36928 based on Foata normal form. 3590/300406 useless extension candidates. Maximal degree in co-relation 323414. Up to 98893 conditions per place. [2025-04-14 00:58:02,863 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 214 selfloop transitions, 43 changer transitions 3/265 dead transitions. [2025-04-14 00:58:02,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 265 transitions, 1271 flow [2025-04-14 00:58:02,864 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:58:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:58:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 309 transitions. [2025-04-14 00:58:02,866 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6688311688311688 [2025-04-14 00:58:02,866 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 185 flow. Second operand 7 states and 309 transitions. [2025-04-14 00:58:02,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 265 transitions, 1271 flow [2025-04-14 00:58:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 265 transitions, 1241 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:58:04,472 INFO L231 Difference]: Finished difference. Result has 75 places, 105 transitions, 449 flow [2025-04-14 00:58:04,474 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=449, PETRI_PLACES=75, PETRI_TRANSITIONS=105} [2025-04-14 00:58:04,479 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2025-04-14 00:58:04,480 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 105 transitions, 449 flow [2025-04-14 00:58:04,480 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:58:04,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:58:04,480 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] [2025-04-14 00:58:04,480 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:58:04,480 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)] === [2025-04-14 00:58:04,481 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:58:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash -709136021, now seen corresponding path program 2 times [2025-04-14 00:58:04,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:58:04,482 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153691680] [2025-04-14 00:58:04,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:58:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:58:04,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 1 equivalence classes. [2025-04-14 00:58:04,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-14 00:58:04,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:58:04,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:58:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:58:04,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:58:04,758 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153691680] [2025-04-14 00:58:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153691680] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:58:04,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:58:04,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:58:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770896880] [2025-04-14 00:58:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:58:04,760 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:58:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:58:04,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:58:04,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:58:04,760 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2025-04-14 00:58:04,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 105 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:58:04,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:58:04,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2025-04-14 00:58:04,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:58:24,872 INFO L116 PetriNetUnfolderBase]: 360291/467695 cut-off events. [2025-04-14 00:58:24,872 INFO L117 PetriNetUnfolderBase]: For 340495/340495 co-relation queries the response was YES. [2025-04-14 00:58:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285122 conditions, 467695 events. 360291/467695 cut-off events. For 340495/340495 co-relation queries the response was YES. Maximal size of possible extension queue 15441. Compared 3154395 event pairs, 67161 based on Foata normal form. 3046/469399 useless extension candidates. Maximal degree in co-relation 683785. Up to 210524 conditions per place. [2025-04-14 00:58:26,872 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 209 selfloop transitions, 60 changer transitions 5/279 dead transitions. [2025-04-14 00:58:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 279 transitions, 1743 flow [2025-04-14 00:58:26,872 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:58:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:58:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2025-04-14 00:58:26,873 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-14 00:58:26,873 INFO L175 Difference]: Start difference. First operand has 75 places, 105 transitions, 449 flow. Second operand 5 states and 220 transitions. [2025-04-14 00:58:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 279 transitions, 1743 flow [2025-04-14 00:58:34,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 279 transitions, 1743 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 00:58:34,741 INFO L231 Difference]: Finished difference. Result has 82 places, 161 transitions, 1073 flow [2025-04-14 00:58:34,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=449, 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=1073, PETRI_PLACES=82, PETRI_TRANSITIONS=161} [2025-04-14 00:58:34,742 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2025-04-14 00:58:34,742 INFO L485 AbstractCegarLoop]: Abstraction has has 82 places, 161 transitions, 1073 flow [2025-04-14 00:58:34,742 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:58:34,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:58:34,742 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] [2025-04-14 00:58:34,742 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:58:34,743 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)] === [2025-04-14 00:58:34,743 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:58:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 305929523, now seen corresponding path program 3 times [2025-04-14 00:58:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:58:34,743 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609867694] [2025-04-14 00:58:34,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:58:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:58:34,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 1 equivalence classes. [2025-04-14 00:58:34,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-04-14 00:58:34,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 00:58:34,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:58:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:58:34,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:58:34,785 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609867694] [2025-04-14 00:58:34,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609867694] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:58:34,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:58:34,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:58:34,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493101417] [2025-04-14 00:58:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:58:34,786 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:58:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:58:34,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:58:34,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:58:34,786 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2025-04-14 00:58:34,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 161 transitions, 1073 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:58:34,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:58:34,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2025-04-14 00:58:34,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand