/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/pthread-wmm/safe031_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:37:39,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:37:39,668 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 19:37:39,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:37:39,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:37:39,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:37:39,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:37:39,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:37:39,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:37:39,694 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:37:39,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:37:39,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:37:39,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:37:39,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:37:39,696 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:39,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:39,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:39,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:37:39,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:37:39,697 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 19:37:39,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:37:39,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:37:39,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:37:39,925 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:37:39,926 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:37:39,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2025-04-13 19:37:41,247 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa36f881/fb34c21d74b840cdb31bf8bf9c1956be/FLAG279bcc655 [2025-04-13 19:37:41,502 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:37:41,506 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2025-04-13 19:37:41,518 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa36f881/fb34c21d74b840cdb31bf8bf9c1956be/FLAG279bcc655 [2025-04-13 19:37:42,297 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa36f881/fb34c21d74b840cdb31bf8bf9c1956be [2025-04-13 19:37:42,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:37:42,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:37:42,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:42,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:37:42,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:37:42,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a4488e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42, skipping insertion in model container [2025-04-13 19:37:42,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:37:42,458 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2025-04-13 19:37:42,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:42,568 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:37:42,581 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2025-04-13 19:37:42,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:42,650 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:37:42,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42 WrapperNode [2025-04-13 19:37:42,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:42,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:42,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:37:42,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:37:42,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,687 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-04-13 19:37:42,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:42,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:37:42,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:37:42,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:37:42,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,716 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 19:37:42,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,719 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:37:42,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:37:42,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:37:42,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:37:42,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (1/1) ... [2025-04-13 19:37:42,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:37:42,760 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 19:37:42,763 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 19:37:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:37:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:37:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:37:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:37:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:37:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:37:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 19:37:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 19:37:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:37:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:37:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:37:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:37:42,783 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 19:37:42,892 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:37:42,894 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:37:43,018 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:37:43,019 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:37:43,019 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:37:43,101 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:37:43,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:43 BoogieIcfgContainer [2025-04-13 19:37:43,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:37:43,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:37:43,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:37:43,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:37:43,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:37:42" (1/3) ... [2025-04-13 19:37:43,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c6659d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:43, skipping insertion in model container [2025-04-13 19:37:43,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:42" (2/3) ... [2025-04-13 19:37:43,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c6659d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:43, skipping insertion in model container [2025-04-13 19:37:43,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:43" (3/3) ... [2025-04-13 19:37:43,110 INFO L128 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2025-04-13 19:37:43,121 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:37:43,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe031_tso.i that has 4 procedures, 36 locations, 32 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:37:43,122 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:37:43,154 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:37:43,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 82 flow [2025-04-13 19:37:43,198 INFO L116 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-04-13 19:37:43,202 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:43,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:37:43,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 35 transitions, 82 flow [2025-04-13 19:37:43,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2025-04-13 19:37:43,212 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:37:43,219 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;@4356babe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:37:43,219 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:37:43,229 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:37:43,229 INFO L116 PetriNetUnfolderBase]: 0/29 cut-off events. [2025-04-13 19:37:43,229 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:43,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:43,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:43,230 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:43,236 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1828719578, now seen corresponding path program 1 times [2025-04-13 19:37:43,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:43,241 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143946900] [2025-04-13 19:37:43,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:43,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:43,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:37:43,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:37:43,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:43,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:43,627 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 19:37:43,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:43,627 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143946900] [2025-04-13 19:37:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143946900] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:43,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:43,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:37:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801050926] [2025-04-13 19:37:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:43,633 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:43,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:43,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:43,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:43,661 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2025-04-13 19:37:43,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:43,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:43,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2025-04-13 19:37:43,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:43,918 INFO L116 PetriNetUnfolderBase]: 890/1751 cut-off events. [2025-04-13 19:37:43,918 INFO L117 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-04-13 19:37:43,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3211 conditions, 1751 events. 890/1751 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12259 event pairs, 274 based on Foata normal form. 80/1795 useless extension candidates. Maximal degree in co-relation 3200. Up to 643 conditions per place. [2025-04-13 19:37:43,933 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 27 selfloop transitions, 6 changer transitions 17/63 dead transitions. [2025-04-13 19:37:43,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 241 flow [2025-04-13 19:37:43,935 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-04-13 19:37:43,945 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7542857142857143 [2025-04-13 19:37:43,946 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 5 states and 132 transitions. [2025-04-13 19:37:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 241 flow [2025-04-13 19:37:43,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:43,955 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 128 flow [2025-04-13 19:37:43,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2025-04-13 19:37:43,959 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2025-04-13 19:37:43,959 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 128 flow [2025-04-13 19:37:43,960 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:43,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:43,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:43,960 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:37:43,960 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:43,961 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 759791225, now seen corresponding path program 1 times [2025-04-13 19:37:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:43,961 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305924438] [2025-04-13 19:37:43,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:43,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:37:43,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:37:43,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:43,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:44,182 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305924438] [2025-04-13 19:37:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305924438] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:44,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:44,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577671623] [2025-04-13 19:37:44,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:44,183 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:44,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:44,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:44,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:44,197 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2025-04-13 19:37:44,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:44,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:44,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2025-04-13 19:37:44,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:44,416 INFO L116 PetriNetUnfolderBase]: 786/1617 cut-off events. [2025-04-13 19:37:44,416 INFO L117 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2025-04-13 19:37:44,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 1617 events. 786/1617 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11281 event pairs, 103 based on Foata normal form. 58/1660 useless extension candidates. Maximal degree in co-relation 4141. Up to 572 conditions per place. [2025-04-13 19:37:44,425 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 32 selfloop transitions, 10 changer transitions 19/74 dead transitions. [2025-04-13 19:37:44,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 404 flow [2025-04-13 19:37:44,426 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:37:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:37:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-04-13 19:37:44,427 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.710204081632653 [2025-04-13 19:37:44,427 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 128 flow. Second operand 7 states and 174 transitions. [2025-04-13 19:37:44,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 404 flow [2025-04-13 19:37:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:44,435 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 188 flow [2025-04-13 19:37:44,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-04-13 19:37:44,436 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2025-04-13 19:37:44,436 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 188 flow [2025-04-13 19:37:44,436 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:44,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:44,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:44,436 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:37:44,436 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:44,437 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1196129109, now seen corresponding path program 1 times [2025-04-13 19:37:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:44,437 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594400136] [2025-04-13 19:37:44,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:44,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:44,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:37:44,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:37:44,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:44,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:44,589 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 19:37:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:44,589 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594400136] [2025-04-13 19:37:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594400136] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:44,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:44,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:44,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434096360] [2025-04-13 19:37:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:44,590 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:44,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:44,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:44,600 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2025-04-13 19:37:44,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:44,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:44,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2025-04-13 19:37:44,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:44,780 INFO L116 PetriNetUnfolderBase]: 748/1538 cut-off events. [2025-04-13 19:37:44,780 INFO L117 PetriNetUnfolderBase]: For 3074/3084 co-relation queries the response was YES. [2025-04-13 19:37:44,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4421 conditions, 1538 events. 748/1538 cut-off events. For 3074/3084 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10519 event pairs, 124 based on Foata normal form. 67/1595 useless extension candidates. Maximal degree in co-relation 4402. Up to 563 conditions per place. [2025-04-13 19:37:44,790 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 36 selfloop transitions, 12 changer transitions 20/81 dead transitions. [2025-04-13 19:37:44,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 505 flow [2025-04-13 19:37:44,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:37:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:37:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-04-13 19:37:44,792 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.710204081632653 [2025-04-13 19:37:44,792 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 188 flow. Second operand 7 states and 174 transitions. [2025-04-13 19:37:44,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 505 flow [2025-04-13 19:37:44,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 485 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:44,804 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 276 flow [2025-04-13 19:37:44,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2025-04-13 19:37:44,804 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2025-04-13 19:37:44,804 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 276 flow [2025-04-13 19:37:44,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:44,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:44,805 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:44,805 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:37:44,806 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:44,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:44,806 INFO L85 PathProgramCache]: Analyzing trace with hash 815217198, now seen corresponding path program 1 times [2025-04-13 19:37:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:44,806 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586863011] [2025-04-13 19:37:44,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:44,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:44,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:37:44,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:37:44,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:44,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:44,907 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 19:37:44,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:44,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586863011] [2025-04-13 19:37:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586863011] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:44,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:44,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455148238] [2025-04-13 19:37:44,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:44,908 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:44,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:44,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:44,915 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:37:44,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:37:44,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:44,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:37:44,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:45,065 INFO L116 PetriNetUnfolderBase]: 1009/1947 cut-off events. [2025-04-13 19:37:45,066 INFO L117 PetriNetUnfolderBase]: For 2106/2148 co-relation queries the response was YES. [2025-04-13 19:37:45,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4720 conditions, 1947 events. 1009/1947 cut-off events. For 2106/2148 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13204 event pairs, 188 based on Foata normal form. 122/1955 useless extension candidates. Maximal degree in co-relation 4696. Up to 849 conditions per place. [2025-04-13 19:37:45,080 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 26 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2025-04-13 19:37:45,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 372 flow [2025-04-13 19:37:45,080 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:37:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:37:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-04-13 19:37:45,081 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-04-13 19:37:45,081 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 276 flow. Second operand 4 states and 105 transitions. [2025-04-13 19:37:45,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 372 flow [2025-04-13 19:37:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 362 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:45,089 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 304 flow [2025-04-13 19:37:45,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2025-04-13 19:37:45,091 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2025-04-13 19:37:45,091 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 304 flow [2025-04-13 19:37:45,091 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:37:45,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:45,091 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:45,091 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:37:45,092 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:45,092 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 875918658, now seen corresponding path program 1 times [2025-04-13 19:37:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:45,092 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632493569] [2025-04-13 19:37:45,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:45,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 19:37:45,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 19:37:45,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:45,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:45,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632493569] [2025-04-13 19:37:45,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632493569] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:45,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:45,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:45,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138153321] [2025-04-13 19:37:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:45,225 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:45,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:45,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:45,233 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2025-04-13 19:37:45,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 19:37:45,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:45,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2025-04-13 19:37:45,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:45,565 INFO L116 PetriNetUnfolderBase]: 1631/3343 cut-off events. [2025-04-13 19:37:45,566 INFO L117 PetriNetUnfolderBase]: For 5452/5529 co-relation queries the response was YES. [2025-04-13 19:37:45,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9944 conditions, 3343 events. 1631/3343 cut-off events. For 5452/5529 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 26459 event pairs, 454 based on Foata normal form. 115/3171 useless extension candidates. Maximal degree in co-relation 9918. Up to 1033 conditions per place. [2025-04-13 19:37:45,582 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 42 selfloop transitions, 17 changer transitions 13/89 dead transitions. [2025-04-13 19:37:45,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 635 flow [2025-04-13 19:37:45,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:37:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:37:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2025-04-13 19:37:45,583 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-04-13 19:37:45,584 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 304 flow. Second operand 7 states and 175 transitions. [2025-04-13 19:37:45,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 635 flow [2025-04-13 19:37:45,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 631 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:45,594 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 389 flow [2025-04-13 19:37:45,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2025-04-13 19:37:45,595 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2025-04-13 19:37:45,595 INFO L485 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 389 flow [2025-04-13 19:37:45,595 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 19:37:45,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:45,595 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:45,596 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:37:45,596 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:45,596 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -148468592, now seen corresponding path program 1 times [2025-04-13 19:37:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:45,596 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494884744] [2025-04-13 19:37:45,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:45,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 19:37:45,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 19:37:45,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:45,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:45,687 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 19:37:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:45,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494884744] [2025-04-13 19:37:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494884744] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:45,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688851248] [2025-04-13 19:37:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:45,688 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:45,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:45,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:45,691 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:37:45,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:45,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:45,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:37:45,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:45,923 INFO L116 PetriNetUnfolderBase]: 1259/2459 cut-off events. [2025-04-13 19:37:45,924 INFO L117 PetriNetUnfolderBase]: For 2628/3063 co-relation queries the response was YES. [2025-04-13 19:37:45,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6694 conditions, 2459 events. 1259/2459 cut-off events. For 2628/3063 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17596 event pairs, 104 based on Foata normal form. 187/2529 useless extension candidates. Maximal degree in co-relation 6663. Up to 1148 conditions per place. [2025-04-13 19:37:45,936 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 33 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2025-04-13 19:37:45,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 533 flow [2025-04-13 19:37:45,937 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-04-13 19:37:45,938 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.76 [2025-04-13 19:37:45,938 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 389 flow. Second operand 5 states and 133 transitions. [2025-04-13 19:37:45,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 533 flow [2025-04-13 19:37:45,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 505 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-04-13 19:37:45,946 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 415 flow [2025-04-13 19:37:45,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2025-04-13 19:37:45,948 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2025-04-13 19:37:45,948 INFO L485 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 415 flow [2025-04-13 19:37:45,948 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:45,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:45,948 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] [2025-04-13 19:37:45,948 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:37:45,948 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:45,949 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1675703564, now seen corresponding path program 1 times [2025-04-13 19:37:45,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:45,949 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196259136] [2025-04-13 19:37:45,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:45,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 19:37:45,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 19:37:45,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:45,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:46,088 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 19:37:46,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:46,088 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196259136] [2025-04-13 19:37:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196259136] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:46,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783947262] [2025-04-13 19:37:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:46,089 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:46,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:46,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:46,102 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2025-04-13 19:37:46,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 415 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 19:37:46,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:46,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2025-04-13 19:37:46,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:46,411 INFO L116 PetriNetUnfolderBase]: 1578/3375 cut-off events. [2025-04-13 19:37:46,411 INFO L117 PetriNetUnfolderBase]: For 9003/9382 co-relation queries the response was YES. [2025-04-13 19:37:46,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11098 conditions, 3375 events. 1578/3375 cut-off events. For 9003/9382 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28212 event pairs, 576 based on Foata normal form. 93/3085 useless extension candidates. Maximal degree in co-relation 11064. Up to 968 conditions per place. [2025-04-13 19:37:46,435 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 32 selfloop transitions, 12 changer transitions 15/80 dead transitions. [2025-04-13 19:37:46,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 667 flow [2025-04-13 19:37:46,436 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2025-04-13 19:37:46,436 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7314285714285714 [2025-04-13 19:37:46,436 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 415 flow. Second operand 5 states and 128 transitions. [2025-04-13 19:37:46,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 667 flow [2025-04-13 19:37:46,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 651 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:46,450 INFO L231 Difference]: Finished difference. Result has 76 places, 49 transitions, 364 flow [2025-04-13 19:37:46,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=76, PETRI_TRANSITIONS=49} [2025-04-13 19:37:46,451 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2025-04-13 19:37:46,451 INFO L485 AbstractCegarLoop]: Abstraction has has 76 places, 49 transitions, 364 flow [2025-04-13 19:37:46,451 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 19:37:46,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:46,451 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] [2025-04-13 19:37:46,451 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 19:37:46,451 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:46,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -356307226, now seen corresponding path program 2 times [2025-04-13 19:37:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:46,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217883763] [2025-04-13 19:37:46,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:37:46,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:46,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-04-13 19:37:46,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 19:37:46,464 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:37:46,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:46,568 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 19:37:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:46,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217883763] [2025-04-13 19:37:46,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217883763] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:46,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:46,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:37:46,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547800453] [2025-04-13 19:37:46,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:46,569 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:46,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:46,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:46,577 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2025-04-13 19:37:46,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 49 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 19:37:46,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2025-04-13 19:37:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:46,744 INFO L116 PetriNetUnfolderBase]: 1016/1923 cut-off events. [2025-04-13 19:37:46,745 INFO L117 PetriNetUnfolderBase]: For 2850/3805 co-relation queries the response was YES. [2025-04-13 19:37:46,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 1923 events. 1016/1923 cut-off events. For 2850/3805 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12803 event pairs, 58 based on Foata normal form. 163/1967 useless extension candidates. Maximal degree in co-relation 5774. Up to 840 conditions per place. [2025-04-13 19:37:46,753 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 11 changer transitions 14/68 dead transitions. [2025-04-13 19:37:46,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 498 flow [2025-04-13 19:37:46,753 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-04-13 19:37:46,754 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2025-04-13 19:37:46,754 INFO L175 Difference]: Start difference. First operand has 76 places, 49 transitions, 364 flow. Second operand 6 states and 153 transitions. [2025-04-13 19:37:46,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 498 flow [2025-04-13 19:37:46,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 444 flow, removed 9 selfloop flow, removed 9 redundant places. [2025-04-13 19:37:46,758 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 252 flow [2025-04-13 19:37:46,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2025-04-13 19:37:46,761 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2025-04-13 19:37:46,761 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 252 flow [2025-04-13 19:37:46,761 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 19:37:46,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:46,761 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] [2025-04-13 19:37:46,761 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 19:37:46,761 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:46,762 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 404267183, now seen corresponding path program 1 times [2025-04-13 19:37:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:46,762 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650055467] [2025-04-13 19:37:46,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:46,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 19:37:46,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 19:37:46,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:46,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:46,871 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 19:37:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:46,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650055467] [2025-04-13 19:37:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650055467] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949539908] [2025-04-13 19:37:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:46,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:46,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:46,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:46,877 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2025-04-13 19:37:46,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:46,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:46,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2025-04-13 19:37:46,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:46,954 INFO L116 PetriNetUnfolderBase]: 186/410 cut-off events. [2025-04-13 19:37:46,954 INFO L117 PetriNetUnfolderBase]: For 766/778 co-relation queries the response was YES. [2025-04-13 19:37:46,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 410 events. 186/410 cut-off events. For 766/778 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1928 event pairs, 24 based on Foata normal form. 8/398 useless extension candidates. Maximal degree in co-relation 1285. Up to 186 conditions per place. [2025-04-13 19:37:46,955 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2025-04-13 19:37:46,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 52 transitions, 355 flow [2025-04-13 19:37:46,956 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2025-04-13 19:37:46,956 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2025-04-13 19:37:46,956 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 252 flow. Second operand 6 states and 123 transitions. [2025-04-13 19:37:46,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 52 transitions, 355 flow [2025-04-13 19:37:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 233 flow, removed 18 selfloop flow, removed 22 redundant places. [2025-04-13 19:37:46,958 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2025-04-13 19:37:46,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2025-04-13 19:37:46,960 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2025-04-13 19:37:46,960 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2025-04-13 19:37:46,960 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 19:37:46,962 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 19:37:46,962 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 19:37:46,963 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:37:46,963 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 19:37:46,964 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 19:37:46,964 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:46,966 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:37:46,967 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:37:46,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:37:46 BasicIcfg [2025-04-13 19:37:46,970 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:37:46,970 INFO L158 Benchmark]: Toolchain (without parser) took 4670.15ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 107.7MB in the beginning and 221.7MB in the end (delta: -114.0MB). Peak memory consumption was 129.6MB. Max. memory is 8.0GB. [2025-04-13 19:37:46,970 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:46,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.40ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 84.2MB in the end (delta: 23.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:37:46,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.18ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 82.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:46,971 INFO L158 Benchmark]: Boogie Preprocessor took 45.06ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:46,971 INFO L158 Benchmark]: RCFGBuilder took 367.63ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 59.0MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:46,971 INFO L158 Benchmark]: TraceAbstraction took 3867.29ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 58.2MB in the beginning and 221.7MB in the end (delta: -163.5MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2025-04-13 19:37:46,975 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 349.40ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 84.2MB in the end (delta: 23.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.18ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 82.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 45.06ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 80.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 367.63ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 59.0MB in the end (delta: 21.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 3867.29ms. Allocated memory was 155.2MB in the beginning and 398.5MB in the end (delta: 243.3MB). Free memory was 58.2MB in the beginning and 221.7MB in the end (delta: -163.5MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 61 locations, 57 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 578 IncrementalHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 52 mSDtfsCounter, 578 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:37:46,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...