./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 22:00:13,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 22:00:13,960 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-13 22:00:13,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 22:00:13,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 22:00:13,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 22:00:13,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 22:00:13,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 22:00:13,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 22:00:13,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 22:00:13,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 22:00:13,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 22:00:13,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 22:00:13,993 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 22:00:13,994 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:00:13,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 22:00:13,994 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2025-03-13 22:00:14,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 22:00:14,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 22:00:14,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 22:00:14,236 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 22:00:14,236 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 22:00:14,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2025-03-13 22:00:15,391 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f65f8a6/5f26223e11df48f78ac8a675b4b624ec/FLAG41dd560b6 [2025-03-13 22:00:15,653 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 22:00:15,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2025-03-13 22:00:15,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f65f8a6/5f26223e11df48f78ac8a675b4b624ec/FLAG41dd560b6 [2025-03-13 22:00:15,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f65f8a6/5f26223e11df48f78ac8a675b4b624ec [2025-03-13 22:00:15,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 22:00:15,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 22:00:15,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 22:00:15,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 22:00:15,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 22:00:15,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:00:15" (1/1) ... [2025-03-13 22:00:15,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd5da9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:15, skipping insertion in model container [2025-03-13 22:00:15,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:00:15" (1/1) ... [2025-03-13 22:00:15,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 22:00:16,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:00:16,294 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 22:00:16,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:00:16,373 INFO L204 MainTranslator]: Completed translation [2025-03-13 22:00:16,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16 WrapperNode [2025-03-13 22:00:16,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 22:00:16,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 22:00:16,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 22:00:16,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 22:00:16,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,421 INFO L138 Inliner]: procedures = 173, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 103 [2025-03-13 22:00:16,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 22:00:16,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 22:00:16,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 22:00:16,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 22:00:16,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,441 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 22:00:16,445 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 22:00:16,446 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 22:00:16,446 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 22:00:16,446 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (1/1) ... [2025-03-13 22:00:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:00:16,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 22:00:16,476 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) [2025-03-13 22:00:16,480 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 [2025-03-13 22:00:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-03-13 22:00:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-03-13 22:00:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-13 22:00:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-13 22:00:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 22:00:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-13 22:00:16,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 22:00:16,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 22:00:16,499 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 22:00:16,613 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 22:00:16,615 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 22:00:16,812 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 22:00:16,812 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 22:00:16,812 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 22:00:16,869 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 22:00:16,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:00:16 BoogieIcfgContainer [2025-03-13 22:00:16,872 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 22:00:16,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 22:00:16,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 22:00:16,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 22:00:16,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 10:00:15" (1/3) ... [2025-03-13 22:00:16,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc8d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:00:16, skipping insertion in model container [2025-03-13 22:00:16,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:16" (2/3) ... [2025-03-13 22:00:16,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc8d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:00:16, skipping insertion in model container [2025-03-13 22:00:16,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:00:16" (3/3) ... [2025-03-13 22:00:16,881 INFO L128 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2025-03-13 22:00:16,892 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 22:00:16,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 30_Function_Pointer3_vs.i that has 3 procedures, 101 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-13 22:00:16,893 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 22:00:16,940 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:16,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 220 flow [2025-03-13 22:00:17,009 INFO L124 PetriNetUnfolderBase]: 5/112 cut-off events. [2025-03-13 22:00:17,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 5/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 99. Up to 3 conditions per place. [2025-03-13 22:00:17,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 106 transitions, 220 flow [2025-03-13 22:00:17,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 217 flow [2025-03-13 22:00:17,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:17,039 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:17,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-13 22:00:17,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:17,045 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:17,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:17,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,046 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-13 22:00:17,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 615951655, now seen corresponding path program 1 times [2025-03-13 22:00:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466106859] [2025-03-13 22:00:17,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:17,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:17,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466106859] [2025-03-13 22:00:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466106859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:17,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716624820] [2025-03-13 22:00:17,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:17,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:17,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:17,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:17,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 106 [2025-03-13 22:00:17,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2025-03-13 22:00:17,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:17,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 106 [2025-03-13 22:00:17,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:17,287 INFO L124 PetriNetUnfolderBase]: 20/207 cut-off events. [2025-03-13 22:00:17,287 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:17,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 207 events. 20/207 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 532 event pairs, 4 based on Foata normal form. 34/222 useless extension candidates. Maximal degree in co-relation 234. Up to 25 conditions per place. [2025-03-13 22:00:17,291 INFO L140 encePairwiseOnDemand]: 94/106 looper letters, 11 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-03-13 22:00:17,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 230 flow [2025-03-13 22:00:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:00:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:00:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2025-03-13 22:00:17,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9371069182389937 [2025-03-13 22:00:17,304 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 217 flow. Second operand 3 states and 298 transitions. [2025-03-13 22:00:17,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 230 flow [2025-03-13 22:00:17,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 22:00:17,312 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 212 flow [2025-03-13 22:00:17,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-03-13 22:00:17,317 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2025-03-13 22:00:17,318 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 212 flow [2025-03-13 22:00:17,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2025-03-13 22:00:17,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 22:00:17,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-13 22:00:17,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -358655496, now seen corresponding path program 1 times [2025-03-13 22:00:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419425378] [2025-03-13 22:00:17,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:17,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:17,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,337 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:17,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:17,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:17,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:17,367 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:17,368 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-03-13 22:00:17,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2025-03-13 22:00:17,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2025-03-13 22:00:17,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2025-03-13 22:00:17,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2025-03-13 22:00:17,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 22:00:17,375 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:17,378 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:17,378 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 22:00:17,439 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 185 transitions, 390 flow [2025-03-13 22:00:17,487 INFO L124 PetriNetUnfolderBase]: 7/184 cut-off events. [2025-03-13 22:00:17,489 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 22:00:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 184 events. 7/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 381 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2025-03-13 22:00:17,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 185 transitions, 390 flow [2025-03-13 22:00:17,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 168 transitions, 349 flow [2025-03-13 22:00:17,500 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:17,500 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:17,501 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-03-13 22:00:17,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:17,506 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:17,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:17,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,506 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2025-03-13 22:00:17,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1853211319, now seen corresponding path program 1 times [2025-03-13 22:00:17,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260103491] [2025-03-13 22:00:17,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:17,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:17,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260103491] [2025-03-13 22:00:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260103491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:17,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805188287] [2025-03-13 22:00:17,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:17,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:17,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:17,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:17,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 185 [2025-03-13 22:00:17,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2025-03-13 22:00:17,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:17,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 185 [2025-03-13 22:00:17,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:17,781 INFO L124 PetriNetUnfolderBase]: 184/1312 cut-off events. [2025-03-13 22:00:17,781 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2025-03-13 22:00:17,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 1312 events. 184/1312 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8744 event pairs, 59 based on Foata normal form. 171/1375 useless extension candidates. Maximal degree in co-relation 1615. Up to 137 conditions per place. [2025-03-13 22:00:17,789 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 18 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2025-03-13 22:00:17,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 159 transitions, 383 flow [2025-03-13 22:00:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:00:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:00:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2025-03-13 22:00:17,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9063063063063063 [2025-03-13 22:00:17,793 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 349 flow. Second operand 3 states and 503 transitions. [2025-03-13 22:00:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 159 transitions, 383 flow [2025-03-13 22:00:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 22:00:17,798 INFO L231 Difference]: Finished difference. Result has 155 places, 153 transitions, 344 flow [2025-03-13 22:00:17,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=155, PETRI_TRANSITIONS=153} [2025-03-13 22:00:17,798 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, -14 predicate places. [2025-03-13 22:00:17,799 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 153 transitions, 344 flow [2025-03-13 22:00:17,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2025-03-13 22:00:17,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,799 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 22:00:17,800 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2025-03-13 22:00:17,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1221688185, now seen corresponding path program 1 times [2025-03-13 22:00:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93470529] [2025-03-13 22:00:17,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-13 22:00:17,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-13 22:00:17,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,823 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:17,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-13 22:00:17,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-13 22:00:17,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:17,838 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:17,839 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2025-03-13 22:00:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2025-03-13 22:00:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2025-03-13 22:00:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2025-03-13 22:00:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2025-03-13 22:00:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2025-03-13 22:00:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2025-03-13 22:00:17,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2025-03-13 22:00:17,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2025-03-13 22:00:17,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2025-03-13 22:00:17,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 22:00:17,844 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:17,844 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:17,845 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-13 22:00:17,894 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 264 transitions, 564 flow [2025-03-13 22:00:17,943 INFO L124 PetriNetUnfolderBase]: 9/256 cut-off events. [2025-03-13 22:00:17,943 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-13 22:00:17,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 256 events. 9/256 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 736 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 267. Up to 4 conditions per place. [2025-03-13 22:00:17,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 264 transitions, 564 flow [2025-03-13 22:00:17,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 231 transitions, 483 flow [2025-03-13 22:00:17,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:17,951 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:17,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-13 22:00:17,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:17,954 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:17,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:17,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-03-13 22:00:17,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1296206678, now seen corresponding path program 1 times [2025-03-13 22:00:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798499362] [2025-03-13 22:00:17,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:17,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:17,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798499362] [2025-03-13 22:00:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798499362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:18,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:18,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:18,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795076718] [2025-03-13 22:00:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:18,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:18,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:18,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:18,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 264 [2025-03-13 22:00:18,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 231 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2025-03-13 22:00:18,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:18,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 264 [2025-03-13 22:00:18,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:18,969 INFO L124 PetriNetUnfolderBase]: 1166/6098 cut-off events. [2025-03-13 22:00:18,969 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2025-03-13 22:00:19,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 6098 events. 1166/6098 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 59638 event pairs, 476 based on Foata normal form. 758/6340 useless extension candidates. Maximal degree in co-relation 7973. Up to 831 conditions per place. [2025-03-13 22:00:19,041 INFO L140 encePairwiseOnDemand]: 242/264 looper letters, 25 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2025-03-13 22:00:19,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 540 flow [2025-03-13 22:00:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:00:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:00:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2025-03-13 22:00:19,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8939393939393939 [2025-03-13 22:00:19,045 INFO L175 Difference]: Start difference. First operand has 232 places, 231 transitions, 483 flow. Second operand 3 states and 708 transitions. [2025-03-13 22:00:19,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 540 flow [2025-03-13 22:00:19,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 222 transitions, 535 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-13 22:00:19,057 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 476 flow [2025-03-13 22:00:19,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2025-03-13 22:00:19,059 INFO L279 CegarLoopForPetriNet]: 232 programPoint places, -18 predicate places. [2025-03-13 22:00:19,060 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 476 flow [2025-03-13 22:00:19,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2025-03-13 22:00:19,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:19,060 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:19,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 22:00:19,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-03-13 22:00:19,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 580949252, now seen corresponding path program 1 times [2025-03-13 22:00:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147563146] [2025-03-13 22:00:19,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:19,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-13 22:00:19,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-13 22:00:19,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:19,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:19,092 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:19,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-13 22:00:19,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-13 22:00:19,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:19,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:19,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:19,113 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2025-03-13 22:00:19,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2025-03-13 22:00:19,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2025-03-13 22:00:19,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 22:00:19,114 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:19,114 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:19,114 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-13 22:00:19,164 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:19,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 343 transitions, 742 flow [2025-03-13 22:00:19,194 INFO L124 PetriNetUnfolderBase]: 11/328 cut-off events. [2025-03-13 22:00:19,194 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-13 22:00:19,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 328 events. 11/328 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1138 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 344. Up to 5 conditions per place. [2025-03-13 22:00:19,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 343 transitions, 742 flow [2025-03-13 22:00:19,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 294 transitions, 619 flow [2025-03-13 22:00:19,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:19,200 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:19,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2025-03-13 22:00:19,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:19,202 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:19,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:19,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:19,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:19,203 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2025-03-13 22:00:19,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:19,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1055062268, now seen corresponding path program 1 times [2025-03-13 22:00:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399947088] [2025-03-13 22:00:19,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:19,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:19,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:19,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:19,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:19,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:19,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399947088] [2025-03-13 22:00:19,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399947088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:19,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:19,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120885999] [2025-03-13 22:00:19,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:19,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:19,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:19,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:19,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 343 [2025-03-13 22:00:19,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 294 transitions, 619 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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) [2025-03-13 22:00:19,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:19,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 343 [2025-03-13 22:00:19,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:22,555 INFO L124 PetriNetUnfolderBase]: 6352/26020 cut-off events. [2025-03-13 22:00:22,556 INFO L125 PetriNetUnfolderBase]: For 5308/5308 co-relation queries the response was YES. [2025-03-13 22:00:22,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35984 conditions, 26020 events. 6352/26020 cut-off events. For 5308/5308 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 318243 event pairs, 2991 based on Foata normal form. 3181/26968 useless extension candidates. Maximal degree in co-relation 35959. Up to 4695 conditions per place. [2025-03-13 22:00:22,867 INFO L140 encePairwiseOnDemand]: 316/343 looper letters, 32 selfloop transitions, 6 changer transitions 0/285 dead transitions. [2025-03-13 22:00:22,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 285 transitions, 701 flow [2025-03-13 22:00:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:00:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:00:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2025-03-13 22:00:22,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8872691933916423 [2025-03-13 22:00:22,871 INFO L175 Difference]: Start difference. First operand has 295 places, 294 transitions, 619 flow. Second operand 3 states and 913 transitions. [2025-03-13 22:00:22,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 285 transitions, 701 flow [2025-03-13 22:00:22,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 285 transitions, 688 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-13 22:00:22,881 INFO L231 Difference]: Finished difference. Result has 273 places, 273 transitions, 608 flow [2025-03-13 22:00:22,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=273, PETRI_TRANSITIONS=273} [2025-03-13 22:00:22,883 INFO L279 CegarLoopForPetriNet]: 295 programPoint places, -22 predicate places. [2025-03-13 22:00:22,883 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 273 transitions, 608 flow [2025-03-13 22:00:22,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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) [2025-03-13 22:00:22,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:22,884 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:22,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 22:00:22,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2025-03-13 22:00:22,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1633958983, now seen corresponding path program 1 times [2025-03-13 22:00:22,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731608510] [2025-03-13 22:00:22,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:22,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-13 22:00:22,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-13 22:00:22,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:22,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:22,906 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:22,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-13 22:00:22,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-13 22:00:22,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:22,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:22,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:22,938 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:22,938 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2025-03-13 22:00:22,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2025-03-13 22:00:22,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2025-03-13 22:00:22,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2025-03-13 22:00:22,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2025-03-13 22:00:22,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2025-03-13 22:00:22,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 22:00:22,941 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:22,941 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:22,942 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-13 22:00:23,010 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:23,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 422 transitions, 924 flow [2025-03-13 22:00:23,065 INFO L124 PetriNetUnfolderBase]: 13/400 cut-off events. [2025-03-13 22:00:23,065 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-13 22:00:23,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 400 events. 13/400 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1540 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 422. Up to 6 conditions per place. [2025-03-13 22:00:23,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 422 transitions, 924 flow [2025-03-13 22:00:23,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 357 transitions, 757 flow [2025-03-13 22:00:23,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:23,074 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:23,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-03-13 22:00:23,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:23,076 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:23,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:23,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:23,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:23,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2025-03-13 22:00:23,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -905687803, now seen corresponding path program 1 times [2025-03-13 22:00:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001620043] [2025-03-13 22:00:23,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:23,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:23,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:23,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:23,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001620043] [2025-03-13 22:00:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001620043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857506701] [2025-03-13 22:00:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:23,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:23,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:23,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:23,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 422 [2025-03-13 22:00:23,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 357 transitions, 757 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2025-03-13 22:00:23,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:23,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 422 [2025-03-13 22:00:23,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:40,188 INFO L124 PetriNetUnfolderBase]: 31994/109070 cut-off events. [2025-03-13 22:00:40,188 INFO L125 PetriNetUnfolderBase]: For 34152/34152 co-relation queries the response was YES. [2025-03-13 22:00:41,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158059 conditions, 109070 events. 31994/109070 cut-off events. For 34152/34152 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 1555123 event pairs, 16532 based on Foata normal form. 13020/113005 useless extension candidates. Maximal degree in co-relation 158033. Up to 24103 conditions per place. [2025-03-13 22:00:42,269 INFO L140 encePairwiseOnDemand]: 390/422 looper letters, 39 selfloop transitions, 7 changer transitions 0/348 dead transitions. [2025-03-13 22:00:42,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 348 transitions, 866 flow [2025-03-13 22:00:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:00:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:00:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2025-03-13 22:00:42,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8830963665086888 [2025-03-13 22:00:42,271 INFO L175 Difference]: Start difference. First operand has 358 places, 357 transitions, 757 flow. Second operand 3 states and 1118 transitions. [2025-03-13 22:00:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 348 transitions, 866 flow [2025-03-13 22:00:42,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 348 transitions, 841 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-03-13 22:00:42,300 INFO L231 Difference]: Finished difference. Result has 332 places, 333 transitions, 740 flow [2025-03-13 22:00:42,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=332, PETRI_TRANSITIONS=333} [2025-03-13 22:00:42,301 INFO L279 CegarLoopForPetriNet]: 358 programPoint places, -26 predicate places. [2025-03-13 22:00:42,301 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 333 transitions, 740 flow [2025-03-13 22:00:42,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2025-03-13 22:00:42,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:42,302 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:42,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 22:00:42,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2025-03-13 22:00:42,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -872921928, now seen corresponding path program 1 times [2025-03-13 22:00:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:42,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793172639] [2025-03-13 22:00:42,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:42,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-13 22:00:42,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-13 22:00:42,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:42,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:42,322 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:42,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-13 22:00:42,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-13 22:00:42,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:42,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:42,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:42,348 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2025-03-13 22:00:42,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2025-03-13 22:00:42,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2025-03-13 22:00:42,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 22:00:42,349 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:42,350 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:42,350 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-13 22:00:42,415 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:42,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 497 places, 501 transitions, 1110 flow [2025-03-13 22:00:42,464 INFO L124 PetriNetUnfolderBase]: 15/472 cut-off events. [2025-03-13 22:00:42,464 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-13 22:00:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 472 events. 15/472 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1964 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 501. Up to 7 conditions per place. [2025-03-13 22:00:42,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 497 places, 501 transitions, 1110 flow [2025-03-13 22:00:42,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 421 places, 420 transitions, 897 flow [2025-03-13 22:00:42,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:42,476 INFO L333 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;@41447fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:42,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-03-13 22:00:42,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:42,477 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-13 22:00:42,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:42,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:42,477 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:42,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2025-03-13 22:00:42,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1744359863, now seen corresponding path program 1 times [2025-03-13 22:00:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993952838] [2025-03-13 22:00:42,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:42,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 22:00:42,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 22:00:42,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:42,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:42,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993952838] [2025-03-13 22:00:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993952838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:42,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:42,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 22:00:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051820339] [2025-03-13 22:00:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:42,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:00:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:42,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:00:42,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:00:42,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 501 [2025-03-13 22:00:42,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 420 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 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) [2025-03-13 22:00:42,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:42,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 501 [2025-03-13 22:00:42,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand