./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.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-ext/39_rand_lock_p0_vs-b.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 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:39:02,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:39:02,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-08 21:39:02,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:39:02,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:39:02,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:39:02,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:39:02,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:39:02,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:39:02,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:39:02,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:39:02,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:39:02,559 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:39:02,560 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:39:02,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:39:02,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:39:02,560 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 -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2025-03-08 21:39:02,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:39:02,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:39:02,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:39:02,820 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:39:02,820 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:39:02,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2025-03-08 21:39:03,954 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82703c79b/7e682f182ed84419a4857d4c44381130/FLAGba0c5cabd [2025-03-08 21:39:04,204 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:39:04,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2025-03-08 21:39:04,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82703c79b/7e682f182ed84419a4857d4c44381130/FLAGba0c5cabd [2025-03-08 21:39:04,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82703c79b/7e682f182ed84419a4857d4c44381130 [2025-03-08 21:39:04,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:39:04,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:39:04,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:39:04,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:39:04,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:39:04,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27adf4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04, skipping insertion in model container [2025-03-08 21:39:04,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:39:04,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:39:04,746 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:39:04,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:39:04,808 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:39:04,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04 WrapperNode [2025-03-08 21:39:04,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:39:04,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:39:04,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:39:04,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:39:04,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,832 INFO L138 Inliner]: procedures = 171, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 86 [2025-03-08 21:39:04,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:39:04,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:39:04,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:39:04,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:39:04,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,841 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:39:04,846 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:39:04,846 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:39:04,846 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:39:04,847 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (1/1) ... [2025-03-08 21:39:04,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:39:04,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:39:04,870 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 21:39:04,876 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 21:39:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-08 21:39:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-08 21:39:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:39:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 21:39:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:39:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:39:04,892 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 21:39:04,980 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:39:04,982 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:39:05,133 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 21:39:05,134 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:39:05,190 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:39:05,192 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 21:39:05,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:39:05 BoogieIcfgContainer [2025-03-08 21:39:05,192 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:39:05,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:39:05,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:39:05,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:39:05,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:39:04" (1/3) ... [2025-03-08 21:39:05,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef0a982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:39:05, skipping insertion in model container [2025-03-08 21:39:05,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:39:04" (2/3) ... [2025-03-08 21:39:05,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef0a982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:39:05, skipping insertion in model container [2025-03-08 21:39:05,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:39:05" (3/3) ... [2025-03-08 21:39:05,200 INFO L128 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2025-03-08 21:39:05,209 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:39:05,211 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 39_rand_lock_p0_vs-b.i that has 2 procedures, 77 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2025-03-08 21:39:05,211 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 21:39:05,257 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:39:05,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 166 flow [2025-03-08 21:39:05,312 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2025-03-08 21:39:05,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:39:05,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2025-03-08 21:39:05,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 166 flow [2025-03-08 21:39:05,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 81 transitions, 166 flow [2025-03-08 21:39:05,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:39:05,335 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;@26690f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:39:05,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-08 21:39:05,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:39:05,344 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-08 21:39:05,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:39:05,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:05,345 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:05,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-08 21:39:05,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash -25710428, now seen corresponding path program 1 times [2025-03-08 21:39:05,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:05,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298904565] [2025-03-08 21:39:05,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:05,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 21:39:05,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 21:39:05,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:05,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:05,436 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 21:39:05,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 21:39:05,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 21:39:05,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:05,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:05,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 21:39:05,463 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 21:39:05,464 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2025-03-08 21:39:05,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2025-03-08 21:39:05,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2025-03-08 21:39:05,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2025-03-08 21:39:05,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2025-03-08 21:39:05,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2025-03-08 21:39:05,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2025-03-08 21:39:05,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:39:05,467 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-08 21:39:05,469 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 21:39:05,469 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-08 21:39:05,495 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:39:05,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 141 transitions, 292 flow [2025-03-08 21:39:05,535 INFO L124 PetriNetUnfolderBase]: 8/157 cut-off events. [2025-03-08 21:39:05,535 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 21:39:05,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 157 events. 8/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 312 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 127. Up to 3 conditions per place. [2025-03-08 21:39:05,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 141 transitions, 292 flow [2025-03-08 21:39:05,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 292 flow [2025-03-08 21:39:05,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:39:05,541 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;@26690f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:39:05,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-08 21:39:05,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:39:05,551 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-08 21:39:05,551 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:39:05,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:05,552 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:05,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-08 21:39:05,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 286205510, now seen corresponding path program 1 times [2025-03-08 21:39:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749356991] [2025-03-08 21:39:05,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:05,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 21:39:05,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 21:39:05,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:05,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:39:05,633 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 21:39:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:39:05,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749356991] [2025-03-08 21:39:05,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749356991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:39:05,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:39:05,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:39:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881582909] [2025-03-08 21:39:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:39:05,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:39:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:39:05,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:39:05,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:39:05,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 141 [2025-03-08 21:39:05,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 21:39:05,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:39:05,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 141 [2025-03-08 21:39:05,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:39:05,842 INFO L124 PetriNetUnfolderBase]: 83/697 cut-off events. [2025-03-08 21:39:05,842 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-08 21:39:05,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 697 events. 83/697 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3886 event pairs, 30 based on Foata normal form. 158/798 useless extension candidates. Maximal degree in co-relation 642. Up to 112 conditions per place. [2025-03-08 21:39:05,851 INFO L140 encePairwiseOnDemand]: 112/141 looper letters, 25 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2025-03-08 21:39:05,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 134 transitions, 353 flow [2025-03-08 21:39:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:39:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:39:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2025-03-08 21:39:05,866 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.900709219858156 [2025-03-08 21:39:05,867 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 292 flow. Second operand 3 states and 381 transitions. [2025-03-08 21:39:05,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 134 transitions, 353 flow [2025-03-08 21:39:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:39:05,875 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 336 flow [2025-03-08 21:39:05,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2025-03-08 21:39:05,879 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, -12 predicate places. [2025-03-08 21:39:05,879 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 336 flow [2025-03-08 21:39:05,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 21:39:05,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:05,879 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:05,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:39:05,880 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-08 21:39:05,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -371089649, now seen corresponding path program 1 times [2025-03-08 21:39:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467446247] [2025-03-08 21:39:05,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:05,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 21:39:05,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 21:39:05,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:05,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:05,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 21:39:05,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 21:39:05,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 21:39:05,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:05,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:05,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 21:39:05,927 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2025-03-08 21:39:05,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2025-03-08 21:39:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2025-03-08 21:39:05,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:39:05,928 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 21:39:05,928 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 21:39:05,928 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-08 21:39:05,961 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:39:05,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 201 transitions, 420 flow [2025-03-08 21:39:05,989 INFO L124 PetriNetUnfolderBase]: 12/226 cut-off events. [2025-03-08 21:39:05,989 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-08 21:39:05,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 12/226 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 625 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 186. Up to 4 conditions per place. [2025-03-08 21:39:05,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 201 transitions, 420 flow [2025-03-08 21:39:05,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 201 transitions, 420 flow [2025-03-08 21:39:05,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:39:05,996 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;@26690f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:39:05,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-08 21:39:05,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:39:06,000 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-08 21:39:06,000 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:39:06,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:06,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:06,001 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-08 21:39:06,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash -287364118, now seen corresponding path program 1 times [2025-03-08 21:39:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:06,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816432575] [2025-03-08 21:39:06,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:06,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 21:39:06,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 21:39:06,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:06,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:39:06,050 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 21:39:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:39:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816432575] [2025-03-08 21:39:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816432575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:39:06,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:39:06,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:39:06,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975898661] [2025-03-08 21:39:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:39:06,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:39:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:39:06,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:39:06,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:39:06,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 201 [2025-03-08 21:39:06,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 201 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 21:39:06,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:39:06,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 201 [2025-03-08 21:39:06,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:39:07,001 INFO L124 PetriNetUnfolderBase]: 1850/8283 cut-off events. [2025-03-08 21:39:07,001 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2025-03-08 21:39:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 8283 events. 1850/8283 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 88823 event pairs, 737 based on Foata normal form. 2158/9599 useless extension candidates. Maximal degree in co-relation 7207. Up to 1856 conditions per place. [2025-03-08 21:39:07,054 INFO L140 encePairwiseOnDemand]: 158/201 looper letters, 38 selfloop transitions, 15 changer transitions 0/193 dead transitions. [2025-03-08 21:39:07,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 193 transitions, 522 flow [2025-03-08 21:39:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:39:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:39:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2025-03-08 21:39:07,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8971807628524047 [2025-03-08 21:39:07,059 INFO L175 Difference]: Start difference. First operand has 196 places, 201 transitions, 420 flow. Second operand 3 states and 541 transitions. [2025-03-08 21:39:07,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 193 transitions, 522 flow [2025-03-08 21:39:07,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 193 transitions, 518 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-08 21:39:07,062 INFO L231 Difference]: Finished difference. Result has 178 places, 185 transitions, 488 flow [2025-03-08 21:39:07,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=178, PETRI_TRANSITIONS=185} [2025-03-08 21:39:07,063 INFO L279 CegarLoopForPetriNet]: 196 programPoint places, -18 predicate places. [2025-03-08 21:39:07,063 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 185 transitions, 488 flow [2025-03-08 21:39:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 21:39:07,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:07,064 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:07,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:39:07,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-08 21:39:07,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1312878483, now seen corresponding path program 1 times [2025-03-08 21:39:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406927236] [2025-03-08 21:39:07,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:07,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 21:39:07,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 21:39:07,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:07,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:07,075 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 21:39:07,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 21:39:07,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 21:39:07,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:07,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:07,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 21:39:07,098 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 21:39:07,098 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-08 21:39:07,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-03-08 21:39:07,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-03-08 21:39:07,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-03-08 21:39:07,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-03-08 21:39:07,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-03-08 21:39:07,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-03-08 21:39:07,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-03-08 21:39:07,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:39:07,102 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 21:39:07,102 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 21:39:07,102 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-08 21:39:07,145 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:39:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 261 transitions, 550 flow [2025-03-08 21:39:07,181 INFO L124 PetriNetUnfolderBase]: 16/295 cut-off events. [2025-03-08 21:39:07,181 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-08 21:39:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 16/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 984 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 245. Up to 5 conditions per place. [2025-03-08 21:39:07,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 261 transitions, 550 flow [2025-03-08 21:39:07,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 261 transitions, 550 flow [2025-03-08 21:39:07,187 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:39:07,188 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;@26690f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:39:07,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-08 21:39:07,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:39:07,191 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2025-03-08 21:39:07,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:39:07,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:07,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:07,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-08 21:39:07,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1320180938, now seen corresponding path program 1 times [2025-03-08 21:39:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858537353] [2025-03-08 21:39:07,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:07,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 21:39:07,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 21:39:07,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:07,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:39:07,234 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 21:39:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:39:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858537353] [2025-03-08 21:39:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858537353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:39:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:39:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:39:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403275070] [2025-03-08 21:39:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:39:07,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:39:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:39:07,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:39:07,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:39:07,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 261 [2025-03-08 21:39:07,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 21:39:07,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:39:07,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 261 [2025-03-08 21:39:07,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:39:15,883 INFO L124 PetriNetUnfolderBase]: 31456/99417 cut-off events. [2025-03-08 21:39:15,883 INFO L125 PetriNetUnfolderBase]: For 11679/11679 co-relation queries the response was YES. [2025-03-08 21:39:16,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148900 conditions, 99417 events. 31456/99417 cut-off events. For 11679/11679 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 1437860 event pairs, 13027 based on Foata normal form. 28296/116477 useless extension candidates. Maximal degree in co-relation 87110. Up to 27457 conditions per place. [2025-03-08 21:39:16,902 INFO L140 encePairwiseOnDemand]: 204/261 looper letters, 51 selfloop transitions, 20 changer transitions 0/252 dead transitions. [2025-03-08 21:39:16,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 252 transitions, 695 flow [2025-03-08 21:39:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:39:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:39:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2025-03-08 21:39:16,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8952745849297573 [2025-03-08 21:39:16,905 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 550 flow. Second operand 3 states and 701 transitions. [2025-03-08 21:39:16,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 252 transitions, 695 flow [2025-03-08 21:39:16,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 252 transitions, 683 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-08 21:39:16,913 INFO L231 Difference]: Finished difference. Result has 230 places, 241 transitions, 640 flow [2025-03-08 21:39:16,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=230, PETRI_TRANSITIONS=241} [2025-03-08 21:39:16,914 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -24 predicate places. [2025-03-08 21:39:16,914 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 241 transitions, 640 flow [2025-03-08 21:39:16,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 21:39:16,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:16,914 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:16,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:39:16,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-08 21:39:16,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:16,915 INFO L85 PathProgramCache]: Analyzing trace with hash -681227330, now seen corresponding path program 1 times [2025-03-08 21:39:16,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:16,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527599035] [2025-03-08 21:39:16,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:16,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 21:39:16,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 21:39:16,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:16,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:16,931 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 21:39:16,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 21:39:16,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 21:39:16,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:16,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 21:39:16,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 21:39:16,942 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 21:39:16,942 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2025-03-08 21:39:16,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2025-03-08 21:39:16,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2025-03-08 21:39:16,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2025-03-08 21:39:16,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 21:39:16,945 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 21:39:16,946 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 21:39:16,946 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-08 21:39:16,986 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:39:16,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 321 transitions, 682 flow [2025-03-08 21:39:17,031 INFO L124 PetriNetUnfolderBase]: 20/364 cut-off events. [2025-03-08 21:39:17,032 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-08 21:39:17,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 364 events. 20/364 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1365 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 308. Up to 6 conditions per place. [2025-03-08 21:39:17,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 321 transitions, 682 flow [2025-03-08 21:39:17,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 321 transitions, 682 flow [2025-03-08 21:39:17,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:39:17,040 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;@26690f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:39:17,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2025-03-08 21:39:17,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:39:17,042 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-08 21:39:17,042 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:39:17,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:39:17,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:39:17,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2025-03-08 21:39:17,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:39:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1836543898, now seen corresponding path program 1 times [2025-03-08 21:39:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:39:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861961395] [2025-03-08 21:39:17,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:39:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:39:17,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 21:39:17,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 21:39:17,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:39:17,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:39:17,066 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 21:39:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:39:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861961395] [2025-03-08 21:39:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861961395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:39:17,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:39:17,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:39:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209187070] [2025-03-08 21:39:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:39:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:39:17,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:39:17,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:39:17,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:39:17,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 321 [2025-03-08 21:39:17,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 321 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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 21:39:17,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:39:17,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 321 [2025-03-08 21:39:17,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand