./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/barrier_3t.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 09:18:28,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 09:18:28,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-02-06 09:18:28,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 09:18:28,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 09:18:28,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 09:18:28,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 09:18:28,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 09:18:28,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 09:18:28,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 09:18:28,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 09:18:28,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 09:18:28,707 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 09:18:28,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 09:18:28,708 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 09:18:28,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 09:18:28,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 09:18:28,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 09:18:28,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 09:18:28,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 09:18:28,710 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-jdk21/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 -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2025-02-06 09:18:29,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 09:18:29,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 09:18:29,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 09:18:29,012 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 09:18:29,012 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 09:18:29,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_3t.i [2025-02-06 09:18:30,305 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0a7b3805/c61f4ac83d224265a52113d4390a9f40/FLAGde10ca31c [2025-02-06 09:18:30,621 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 09:18:30,623 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_3t.i [2025-02-06 09:18:30,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0a7b3805/c61f4ac83d224265a52113d4390a9f40/FLAGde10ca31c [2025-02-06 09:18:30,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e0a7b3805/c61f4ac83d224265a52113d4390a9f40 [2025-02-06 09:18:30,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 09:18:30,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 09:18:30,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 09:18:30,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 09:18:30,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 09:18:30,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 09:18:30" (1/1) ... [2025-02-06 09:18:30,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3641e6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:30, skipping insertion in model container [2025-02-06 09:18:30,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 09:18:30" (1/1) ... [2025-02-06 09:18:30,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 09:18:31,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 09:18:31,237 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 09:18:31,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 09:18:31,357 INFO L204 MainTranslator]: Completed translation [2025-02-06 09:18:31,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31 WrapperNode [2025-02-06 09:18:31,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 09:18:31,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 09:18:31,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 09:18:31,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 09:18:31,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,463 INFO L138 Inliner]: procedures = 174, calls = 99, calls flagged for inlining = 19, calls inlined = 31, statements flattened = 1015 [2025-02-06 09:18:31,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 09:18:31,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 09:18:31,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 09:18:31,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 09:18:31,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,560 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 09:18:31,596 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 09:18:31,596 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 09:18:31,596 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 09:18:31,598 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (1/1) ... [2025-02-06 09:18:31,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 09:18:31,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 09:18:31,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 09:18:31,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 09:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-02-06 09:18:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-02-06 09:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 09:18:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-02-06 09:18:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 09:18:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-02-06 09:18:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 09:18:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 09:18:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 09:18:31,664 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 09:18:31,841 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 09:18:31,843 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 09:18:33,203 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 09:18:33,204 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 09:18:33,326 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 09:18:33,327 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 09:18:33,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 09:18:33 BoogieIcfgContainer [2025-02-06 09:18:33,327 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 09:18:33,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 09:18:33,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 09:18:33,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 09:18:33,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 09:18:30" (1/3) ... [2025-02-06 09:18:33,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fff7a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 09:18:33, skipping insertion in model container [2025-02-06 09:18:33,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:18:31" (2/3) ... [2025-02-06 09:18:33,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fff7a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 09:18:33, skipping insertion in model container [2025-02-06 09:18:33,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 09:18:33" (3/3) ... [2025-02-06 09:18:33,337 INFO L128 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2025-02-06 09:18:33,352 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 09:18:33,354 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG barrier_3t.i that has 2 procedures, 1125 locations, 1 initial locations, 20 loop locations, and 99 error locations. [2025-02-06 09:18:33,354 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 09:18:33,555 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 09:18:33,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1128 places, 1206 transitions, 2419 flow [2025-02-06 09:18:34,430 INFO L124 PetriNetUnfolderBase]: 122/1781 cut-off events. [2025-02-06 09:18:34,433 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 09:18:34,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1781 events. 122/1781 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 7220 event pairs, 0 based on Foata normal form. 0/1509 useless extension candidates. Maximal degree in co-relation 1081. Up to 4 conditions per place. [2025-02-06 09:18:34,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 1128 places, 1206 transitions, 2419 flow [2025-02-06 09:18:34,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1128 places, 1206 transitions, 2419 flow [2025-02-06 09:18:34,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:18:34,579 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;@4aef31b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:18:34,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 144 error locations. [2025-02-06 09:18:34,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:18:34,593 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2025-02-06 09:18:34,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:18:34,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:18:34,594 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:18:34,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-02-06 09:18:34,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:18:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 31923893, now seen corresponding path program 1 times [2025-02-06 09:18:34,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:18:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920873851] [2025-02-06 09:18:34,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:18:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:18:34,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 09:18:34,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 09:18:34,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:18:34,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:18:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:18:35,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:18:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920873851] [2025-02-06 09:18:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920873851] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:18:35,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:18:35,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 09:18:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373324040] [2025-02-06 09:18:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:18:35,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 09:18:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:18:35,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 09:18:35,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 09:18:37,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 870 out of 1206 [2025-02-06 09:18:37,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1128 places, 1206 transitions, 2419 flow. Second operand has 6 states, 6 states have (on average 871.5) internal successors, (5229), 6 states have internal predecessors, (5229), 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) [2025-02-06 09:18:37,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:18:37,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 870 of 1206 [2025-02-06 09:18:37,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:18:52,139 INFO L124 PetriNetUnfolderBase]: 18622/87181 cut-off events. [2025-02-06 09:18:52,139 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-02-06 09:18:52,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120477 conditions, 87181 events. 18622/87181 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 1067514 event pairs, 16093 based on Foata normal form. 6985/83558 useless extension candidates. Maximal degree in co-relation 119655. Up to 33286 conditions per place. [2025-02-06 09:18:52,557 INFO L140 encePairwiseOnDemand]: 1146/1206 looper letters, 276 selfloop transitions, 5 changer transitions 3/1128 dead transitions. [2025-02-06 09:18:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1109 places, 1128 transitions, 2825 flow [2025-02-06 09:18:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 09:18:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 09:18:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5556 transitions. [2025-02-06 09:18:52,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7678275290215588 [2025-02-06 09:18:52,598 INFO L175 Difference]: Start difference. First operand has 1128 places, 1206 transitions, 2419 flow. Second operand 6 states and 5556 transitions. [2025-02-06 09:18:52,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1109 places, 1128 transitions, 2825 flow [2025-02-06 09:18:52,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1109 places, 1128 transitions, 2825 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 09:18:52,640 INFO L231 Difference]: Finished difference. Result has 1109 places, 1125 transitions, 2267 flow [2025-02-06 09:18:52,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1206, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=1104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2267, PETRI_PLACES=1109, PETRI_TRANSITIONS=1125} [2025-02-06 09:18:52,650 INFO L279 CegarLoopForPetriNet]: 1128 programPoint places, -19 predicate places. [2025-02-06 09:18:52,650 INFO L471 AbstractCegarLoop]: Abstraction has has 1109 places, 1125 transitions, 2267 flow [2025-02-06 09:18:52,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 871.5) internal successors, (5229), 6 states have internal predecessors, (5229), 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) [2025-02-06 09:18:52,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:18:52,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:18:52,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 09:18:52,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-02-06 09:18:52,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:18:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -931640485, now seen corresponding path program 1 times [2025-02-06 09:18:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:18:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734809873] [2025-02-06 09:18:52,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:18:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:18:52,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 09:18:52,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 09:18:52,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:18:52,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:18:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:18:52,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:18:52,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734809873] [2025-02-06 09:18:52,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734809873] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:18:52,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:18:52,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 09:18:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410712679] [2025-02-06 09:18:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:18:52,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 09:18:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:18:52,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 09:18:52,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 09:18:52,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 1116 out of 1206 [2025-02-06 09:18:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1109 places, 1125 transitions, 2267 flow. Second operand has 3 states, 3 states have (on average 1117.3333333333333) internal successors, (3352), 3 states have internal predecessors, (3352), 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) [2025-02-06 09:18:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:18:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1116 of 1206 [2025-02-06 09:18:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:18:54,914 INFO L124 PetriNetUnfolderBase]: 563/10029 cut-off events. [2025-02-06 09:18:54,914 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 09:18:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10654 conditions, 10029 events. 563/10029 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 92127 event pairs, 210 based on Foata normal form. 1/8618 useless extension candidates. Maximal degree in co-relation 10565. Up to 608 conditions per place. [2025-02-06 09:18:54,990 INFO L140 encePairwiseOnDemand]: 1203/1206 looper letters, 35 selfloop transitions, 2 changer transitions 0/1126 dead transitions. [2025-02-06 09:18:54,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1108 places, 1126 transitions, 2343 flow [2025-02-06 09:18:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 09:18:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 09:18:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3386 transitions. [2025-02-06 09:18:54,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9358761746821448 [2025-02-06 09:18:54,998 INFO L175 Difference]: Start difference. First operand has 1109 places, 1125 transitions, 2267 flow. Second operand 3 states and 3386 transitions. [2025-02-06 09:18:54,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1108 places, 1126 transitions, 2343 flow [2025-02-06 09:18:55,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1103 places, 1126 transitions, 2333 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 09:18:55,019 INFO L231 Difference]: Finished difference. Result has 1104 places, 1126 transitions, 2269 flow [2025-02-06 09:18:55,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1206, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=1101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2269, PETRI_PLACES=1104, PETRI_TRANSITIONS=1126} [2025-02-06 09:18:55,021 INFO L279 CegarLoopForPetriNet]: 1128 programPoint places, -24 predicate places. [2025-02-06 09:18:55,021 INFO L471 AbstractCegarLoop]: Abstraction has has 1104 places, 1126 transitions, 2269 flow [2025-02-06 09:18:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1117.3333333333333) internal successors, (3352), 3 states have internal predecessors, (3352), 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) [2025-02-06 09:18:55,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:18:55,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:18:55,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 09:18:55,024 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-02-06 09:18:55,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:18:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2132051458, now seen corresponding path program 1 times [2025-02-06 09:18:55,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:18:55,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349536019] [2025-02-06 09:18:55,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:18:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:18:55,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 09:18:55,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 09:18:55,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:18:55,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:18:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:18:55,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:18:55,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349536019] [2025-02-06 09:18:55,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349536019] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:18:55,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:18:55,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 09:18:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826048102] [2025-02-06 09:18:55,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:18:55,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 09:18:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:18:55,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 09:18:55,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 09:18:57,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 870 out of 1206 [2025-02-06 09:18:57,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1104 places, 1126 transitions, 2269 flow. Second operand has 6 states, 6 states have (on average 871.5) internal successors, (5229), 6 states have internal predecessors, (5229), 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) [2025-02-06 09:18:57,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:18:57,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 870 of 1206 [2025-02-06 09:18:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:19:11,253 INFO L124 PetriNetUnfolderBase]: 18622/87205 cut-off events. [2025-02-06 09:19:11,254 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-02-06 09:19:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120516 conditions, 87205 events. 18622/87205 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 1067412 event pairs, 16093 based on Foata normal form. 0/76599 useless extension candidates. Maximal degree in co-relation 120432. Up to 33289 conditions per place. [2025-02-06 09:19:11,583 INFO L140 encePairwiseOnDemand]: 1200/1206 looper letters, 277 selfloop transitions, 5 changer transitions 0/1125 dead transitions. [2025-02-06 09:19:11,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1108 places, 1125 transitions, 2831 flow [2025-02-06 09:19:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 09:19:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 09:19:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5502 transitions. [2025-02-06 09:19:11,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7603648424543947 [2025-02-06 09:19:11,596 INFO L175 Difference]: Start difference. First operand has 1104 places, 1126 transitions, 2269 flow. Second operand 6 states and 5502 transitions. [2025-02-06 09:19:11,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1108 places, 1125 transitions, 2831 flow [2025-02-06 09:19:11,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1107 places, 1125 transitions, 2829 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 09:19:11,616 INFO L231 Difference]: Finished difference. Result has 1107 places, 1125 transitions, 2275 flow [2025-02-06 09:19:11,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1206, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=1102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2275, PETRI_PLACES=1107, PETRI_TRANSITIONS=1125} [2025-02-06 09:19:11,619 INFO L279 CegarLoopForPetriNet]: 1128 programPoint places, -21 predicate places. [2025-02-06 09:19:11,619 INFO L471 AbstractCegarLoop]: Abstraction has has 1107 places, 1125 transitions, 2275 flow [2025-02-06 09:19:11,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 871.5) internal successors, (5229), 6 states have internal predecessors, (5229), 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) [2025-02-06 09:19:11,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:19:11,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:19:11,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 09:19:11,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-02-06 09:19:11,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:19:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1204344365, now seen corresponding path program 1 times [2025-02-06 09:19:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:19:11,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926099879] [2025-02-06 09:19:11,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:19:11,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:19:11,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 09:19:11,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 09:19:11,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:19:11,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:19:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 09:19:12,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:19:12,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926099879] [2025-02-06 09:19:12,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926099879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:19:12,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:19:12,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 09:19:12,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417669762] [2025-02-06 09:19:12,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:19:12,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 09:19:12,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:19:12,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 09:19:12,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 09:19:13,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 870 out of 1206 [2025-02-06 09:19:13,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1107 places, 1125 transitions, 2275 flow. Second operand has 6 states, 6 states have (on average 871.5) internal successors, (5229), 6 states have internal predecessors, (5229), 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) [2025-02-06 09:19:13,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:19:13,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 870 of 1206 [2025-02-06 09:19:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand