./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 e2fb8bed 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-divine/barrier_3t.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 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:55:23,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:55:23,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-08 21:55:23,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:55:23,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:55:23,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:55:23,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:55:23,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:55:23,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:55:23,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:55:23,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:55:23,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:55:23,977 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:55:23,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:55:23,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:55:23,978 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:55:23,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:55:23,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:55:23,979 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:55:23,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:55:23,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:55:23,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:55:23,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:55:23,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:55:23,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:55:23,981 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 -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2025-03-08 21:55:24,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:55:24,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:55:24,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:55:24,198 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:55:24,198 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:55:24,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_3t.i [2025-03-08 21:55:25,271 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0338f288e/287e9a35cb114d58aeb28e2fb87f5a5b/FLAG88cb95896 [2025-03-08 21:55:25,510 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:55:25,511 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_3t.i [2025-03-08 21:55:25,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0338f288e/287e9a35cb114d58aeb28e2fb87f5a5b/FLAG88cb95896 [2025-03-08 21:55:25,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0338f288e/287e9a35cb114d58aeb28e2fb87f5a5b [2025-03-08 21:55:25,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:55:25,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:55:25,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:55:25,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:55:25,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:55:25,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:55:25" (1/1) ... [2025-03-08 21:55:25,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6fd936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:25, skipping insertion in model container [2025-03-08 21:55:25,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:55:25" (1/1) ... [2025-03-08 21:55:25,861 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:55:26,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:55:26,158 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:55:26,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:55:26,231 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:55:26,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26 WrapperNode [2025-03-08 21:55:26,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:55:26,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:55:26,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:55:26,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:55:26,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,296 INFO L138 Inliner]: procedures = 174, calls = 99, calls flagged for inlining = 19, calls inlined = 31, statements flattened = 1015 [2025-03-08 21:55:26,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:55:26,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:55:26,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:55:26,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:55:26,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,354 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:55:26,375 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:55:26,375 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:55:26,375 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:55:26,376 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (1/1) ... [2025-03-08 21:55:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:55:26,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:55:26,403 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) [2025-03-08 21:55:26,406 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 [2025-03-08 21:55:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-08 21:55:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-08 21:55:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-08 21:55:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-03-08 21:55:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-08 21:55:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:55:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:55:26,425 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 21:55:26,557 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:55:26,558 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:55:27,629 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 21:55:27,630 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:55:27,712 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:55:27,712 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 21:55:27,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:55:27 BoogieIcfgContainer [2025-03-08 21:55:27,712 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:55:27,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:55:27,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:55:27,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:55:27,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:55:25" (1/3) ... [2025-03-08 21:55:27,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dce1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:55:27, skipping insertion in model container [2025-03-08 21:55:27,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:26" (2/3) ... [2025-03-08 21:55:27,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dce1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:55:27, skipping insertion in model container [2025-03-08 21:55:27,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:55:27" (3/3) ... [2025-03-08 21:55:27,718 INFO L128 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2025-03-08 21:55:27,727 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:55:27,729 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG barrier_3t.i that has 2 procedures, 1117 locations, 1 initial locations, 20 loop locations, and 99 error locations. [2025-03-08 21:55:27,730 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 21:55:27,874 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-08 21:55:27,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1120 places, 1198 transitions, 2403 flow [2025-03-08 21:55:28,464 INFO L124 PetriNetUnfolderBase]: 122/1769 cut-off events. [2025-03-08 21:55:28,466 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:55:28,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 1769 events. 122/1769 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 7111 event pairs, 0 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 1073. Up to 4 conditions per place. [2025-03-08 21:55:28,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 1120 places, 1198 transitions, 2403 flow [2025-03-08 21:55:28,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1120 places, 1198 transitions, 2403 flow [2025-03-08 21:55:28,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:55:28,544 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;@2b7e98f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:55:28,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 144 error locations. [2025-03-08 21:55:28,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:55:28,552 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2025-03-08 21:55:28,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:55:28,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:28,554 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] [2025-03-08 21:55:28,554 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)] === [2025-03-08 21:55:28,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash 96151745, now seen corresponding path program 1 times [2025-03-08 21:55:28,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:28,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927476545] [2025-03-08 21:55:28,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:28,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:28,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 21:55:28,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 21:55:28,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:28,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:29,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927476545] [2025-03-08 21:55:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927476545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849439446] [2025-03-08 21:55:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:29,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:29,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:30,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 1198 [2025-03-08 21:55:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1120 places, 1198 transitions, 2403 flow. Second operand has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:55:30,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:30,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 1198 [2025-03-08 21:55:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:42,676 INFO L124 PetriNetUnfolderBase]: 18617/86563 cut-off events. [2025-03-08 21:55:42,676 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-03-08 21:55:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119861 conditions, 86563 events. 18617/86563 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 1059028 event pairs, 16093 based on Foata normal form. 6971/82961 useless extension candidates. Maximal degree in co-relation 119043. Up to 33288 conditions per place. [2025-03-08 21:55:43,010 INFO L140 encePairwiseOnDemand]: 1138/1198 looper letters, 276 selfloop transitions, 5 changer transitions 3/1120 dead transitions. [2025-03-08 21:55:43,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1101 places, 1120 transitions, 2809 flow [2025-03-08 21:55:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5508 transitions. [2025-03-08 21:55:43,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7662771285475793 [2025-03-08 21:55:43,040 INFO L175 Difference]: Start difference. First operand has 1120 places, 1198 transitions, 2403 flow. Second operand 6 states and 5508 transitions. [2025-03-08 21:55:43,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1101 places, 1120 transitions, 2809 flow [2025-03-08 21:55:43,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1101 places, 1120 transitions, 2809 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:55:43,070 INFO L231 Difference]: Finished difference. Result has 1101 places, 1117 transitions, 2251 flow [2025-03-08 21:55:43,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1198, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=1096, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2251, PETRI_PLACES=1101, PETRI_TRANSITIONS=1117} [2025-03-08 21:55:43,076 INFO L279 CegarLoopForPetriNet]: 1120 programPoint places, -19 predicate places. [2025-03-08 21:55:43,076 INFO L471 AbstractCegarLoop]: Abstraction has has 1101 places, 1117 transitions, 2251 flow [2025-03-08 21:55:43,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:55:43,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:43,079 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] [2025-03-08 21:55:43,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:55:43,080 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)] === [2025-03-08 21:55:43,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2053033942, now seen corresponding path program 1 times [2025-03-08 21:55:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:43,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749747457] [2025-03-08 21:55:43,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:43,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-08 21:55:43,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 21:55:43,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:43,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749747457] [2025-03-08 21:55:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749747457] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:55:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106587509] [2025-03-08 21:55:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:43,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:55:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:43,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:55:43,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:55:43,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 1108 out of 1198 [2025-03-08 21:55:43,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1101 places, 1117 transitions, 2251 flow. Second operand has 3 states, 3 states have (on average 1109.3333333333333) internal successors, (3328), 3 states have internal predecessors, (3328), 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) [2025-03-08 21:55:43,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1108 of 1198 [2025-03-08 21:55:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:44,984 INFO L124 PetriNetUnfolderBase]: 563/9917 cut-off events. [2025-03-08 21:55:44,984 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-08 21:55:45,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10542 conditions, 9917 events. 563/9917 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 90844 event pairs, 210 based on Foata normal form. 1/8505 useless extension candidates. Maximal degree in co-relation 10453. Up to 608 conditions per place. [2025-03-08 21:55:45,043 INFO L140 encePairwiseOnDemand]: 1195/1198 looper letters, 35 selfloop transitions, 2 changer transitions 0/1118 dead transitions. [2025-03-08 21:55:45,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1100 places, 1118 transitions, 2327 flow [2025-03-08 21:55:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:55:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:55:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3362 transitions. [2025-03-08 21:55:45,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9354479688369505 [2025-03-08 21:55:45,048 INFO L175 Difference]: Start difference. First operand has 1101 places, 1117 transitions, 2251 flow. Second operand 3 states and 3362 transitions. [2025-03-08 21:55:45,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1100 places, 1118 transitions, 2327 flow [2025-03-08 21:55:45,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1095 places, 1118 transitions, 2317 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-08 21:55:45,061 INFO L231 Difference]: Finished difference. Result has 1096 places, 1118 transitions, 2253 flow [2025-03-08 21:55:45,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1198, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=1093, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2253, PETRI_PLACES=1096, PETRI_TRANSITIONS=1118} [2025-03-08 21:55:45,063 INFO L279 CegarLoopForPetriNet]: 1120 programPoint places, -24 predicate places. [2025-03-08 21:55:45,063 INFO L471 AbstractCegarLoop]: Abstraction has has 1096 places, 1118 transitions, 2253 flow [2025-03-08 21:55:45,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1109.3333333333333) internal successors, (3328), 3 states have internal predecessors, (3328), 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) [2025-03-08 21:55:45,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:45,065 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] [2025-03-08 21:55:45,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:55:45,065 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)] === [2025-03-08 21:55:45,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash -37141048, now seen corresponding path program 1 times [2025-03-08 21:55:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828319150] [2025-03-08 21:55:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:45,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-08 21:55:45,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-08 21:55:45,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:45,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:45,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828319150] [2025-03-08 21:55:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828319150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:45,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:45,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258320511] [2025-03-08 21:55:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:45,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:45,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:45,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:46,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 1198 [2025-03-08 21:55:46,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1096 places, 1118 transitions, 2253 flow. Second operand has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:55:46,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:46,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 1198 [2025-03-08 21:55:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:58,943 INFO L124 PetriNetUnfolderBase]: 18617/86587 cut-off events. [2025-03-08 21:55:58,943 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2025-03-08 21:55:59,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119900 conditions, 86587 events. 18617/86587 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 1059936 event pairs, 16093 based on Foata normal form. 0/76016 useless extension candidates. Maximal degree in co-relation 119816. Up to 33291 conditions per place. [2025-03-08 21:55:59,227 INFO L140 encePairwiseOnDemand]: 1192/1198 looper letters, 277 selfloop transitions, 5 changer transitions 0/1117 dead transitions. [2025-03-08 21:55:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1100 places, 1117 transitions, 2815 flow [2025-03-08 21:55:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5454 transitions. [2025-03-08 21:55:59,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7587646076794657 [2025-03-08 21:55:59,235 INFO L175 Difference]: Start difference. First operand has 1096 places, 1118 transitions, 2253 flow. Second operand 6 states and 5454 transitions. [2025-03-08 21:55:59,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1100 places, 1117 transitions, 2815 flow [2025-03-08 21:55:59,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1099 places, 1117 transitions, 2813 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 21:55:59,247 INFO L231 Difference]: Finished difference. Result has 1099 places, 1117 transitions, 2259 flow [2025-03-08 21:55:59,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1198, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=1094, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2259, PETRI_PLACES=1099, PETRI_TRANSITIONS=1117} [2025-03-08 21:55:59,249 INFO L279 CegarLoopForPetriNet]: 1120 programPoint places, -21 predicate places. [2025-03-08 21:55:59,249 INFO L471 AbstractCegarLoop]: Abstraction has has 1099 places, 1117 transitions, 2259 flow [2025-03-08 21:55:59,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:55:59,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:59,252 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] [2025-03-08 21:55:59,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:55:59,252 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)] === [2025-03-08 21:55:59,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 616495413, now seen corresponding path program 1 times [2025-03-08 21:55:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766986926] [2025-03-08 21:55:59,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:59,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 21:55:59,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 21:55:59,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:59,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766986926] [2025-03-08 21:55:59,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766986926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:59,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:59,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:59,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102463361] [2025-03-08 21:55:59,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:59,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:59,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:59,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:56:00,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 1198 [2025-03-08 21:56:00,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1099 places, 1117 transitions, 2259 flow. Second operand has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:56:00,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:00,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 1198 [2025-03-08 21:56:00,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:13,047 INFO L124 PetriNetUnfolderBase]: 18617/86585 cut-off events. [2025-03-08 21:56:13,047 INFO L125 PetriNetUnfolderBase]: For 9/12 co-relation queries the response was YES. [2025-03-08 21:56:13,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119907 conditions, 86585 events. 18617/86585 cut-off events. For 9/12 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 1059396 event pairs, 16093 based on Foata normal form. 0/76016 useless extension candidates. Maximal degree in co-relation 119809. Up to 33291 conditions per place. [2025-03-08 21:56:13,327 INFO L140 encePairwiseOnDemand]: 1192/1198 looper letters, 277 selfloop transitions, 5 changer transitions 0/1116 dead transitions. [2025-03-08 21:56:13,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1103 places, 1116 transitions, 2821 flow [2025-03-08 21:56:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:56:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:56:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5454 transitions. [2025-03-08 21:56:13,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7587646076794657 [2025-03-08 21:56:13,335 INFO L175 Difference]: Start difference. First operand has 1099 places, 1117 transitions, 2259 flow. Second operand 6 states and 5454 transitions. [2025-03-08 21:56:13,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1103 places, 1116 transitions, 2821 flow [2025-03-08 21:56:13,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1098 places, 1116 transitions, 2811 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-08 21:56:13,348 INFO L231 Difference]: Finished difference. Result has 1098 places, 1116 transitions, 2257 flow [2025-03-08 21:56:13,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1198, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=1093, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2257, PETRI_PLACES=1098, PETRI_TRANSITIONS=1116} [2025-03-08 21:56:13,350 INFO L279 CegarLoopForPetriNet]: 1120 programPoint places, -22 predicate places. [2025-03-08 21:56:13,350 INFO L471 AbstractCegarLoop]: Abstraction has has 1098 places, 1116 transitions, 2257 flow [2025-03-08 21:56:13,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 863.5) internal successors, (5181), 6 states have internal predecessors, (5181), 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) [2025-03-08 21:56:13,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:13,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:56:13,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:56:13,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr54ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-03-08 21:56:13,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 210067050, now seen corresponding path program 1 times [2025-03-08 21:56:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859315256] [2025-03-08 21:56:13,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:56:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:13,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 21:56:13,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 21:56:13,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:56:13,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat