./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.c -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 d750445530daa57cef2f441377464e89f7d2e9f88f73166de8896066b4af753c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:08:03,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:08:03,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-04-29 11:08:03,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:08:03,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:08:03,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:08:03,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:08:03,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:08:03,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:08:03,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:08:03,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:08:03,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:08:03,630 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:08:03,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:08:03,631 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:08:03,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:03,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:08:03,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:03,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:08:03,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:08:03,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:08:03,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:08:03,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:08:03,634 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 -> d750445530daa57cef2f441377464e89f7d2e9f88f73166de8896066b4af753c [2025-04-29 11:08:03,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:08:03,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:08:03,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:08:03,885 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:08:03,886 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:08:03,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.c [2025-04-29 11:08:05,229 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff92c66/be10809134a646218ce31db12f62eeca/FLAG1783e10e4 [2025-04-29 11:08:05,457 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:08:05,458 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.c [2025-04-29 11:08:05,459 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:08:05,479 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff92c66/be10809134a646218ce31db12f62eeca/FLAG1783e10e4 [2025-04-29 11:08:06,280 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff92c66/be10809134a646218ce31db12f62eeca [2025-04-29 11:08:06,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:08:06,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:08:06,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:08:06,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:08:06,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:08:06,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c59276c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:08:06,453 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:08:06,460 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:08:06,482 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:08:06,494 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:08:06,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06 WrapperNode [2025-04-29 11:08:06,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:08:06,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:08:06,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:08:06,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:08:06,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,515 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2025-04-29 11:08:06,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:08:06,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:08:06,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:08:06,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:08:06,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,525 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:08:06,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:08:06,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:08:06,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:08:06,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (1/1) ... [2025-04-29 11:08:06,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:08:06,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:08:06,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:08:06,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:08:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:08:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:08:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:08:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:08:06,580 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:08:06,627 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:08:06,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:08:06,690 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:08:06,690 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:08:06,696 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:08:06,696 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:08:06,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06 BoogieIcfgContainer [2025-04-29 11:08:06,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:08:06,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:08:06,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:08:06,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:08:06,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:08:06" (1/3) ... [2025-04-29 11:08:06,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e4293e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:08:06" (2/3) ... [2025-04-29 11:08:06,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e4293e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:08:06, skipping insertion in model container [2025-04-29 11:08:06,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06" (3/3) ... [2025-04-29 11:08:06,706 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_25-single_acc.c [2025-04-29 11:08:06,716 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:08:06,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_25-single_acc.c that has 2 procedures, 39 locations, 37 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-29 11:08:06,719 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:08:06,750 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:08:06,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 53 transitions, 114 flow [2025-04-29 11:08:06,799 INFO L116 PetriNetUnfolderBase]: 0/51 cut-off events. [2025-04-29 11:08:06,800 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:06,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-29 11:08:06,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 53 transitions, 114 flow [2025-04-29 11:08:06,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 108 flow [2025-04-29 11:08:06,816 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:08:06,827 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@39fca293, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:08:06,829 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-29 11:08:06,834 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:08:06,834 INFO L116 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-04-29 11:08:06,834 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:08:06,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:06,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:06,835 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-29 11:08:06,839 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1449214496, now seen corresponding path program 1 times [2025-04-29 11:08:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:06,846 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795734372] [2025-04-29 11:08:06,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:06,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-29 11:08:06,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-29 11:08:06,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:06,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:06,957 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795734372] [2025-04-29 11:08:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795734372] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964034391] [2025-04-29 11:08:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:06,963 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:06,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:06,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:06,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:07,017 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 53 [2025-04-29 11:08:07,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 53 [2025-04-29 11:08:07,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:07,060 INFO L116 PetriNetUnfolderBase]: 12/140 cut-off events. [2025-04-29 11:08:07,061 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-29 11:08:07,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 140 events. 12/140 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 570 event pairs, 3 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 174. Up to 22 conditions per place. [2025-04-29 11:08:07,063 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 11 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2025-04-29 11:08:07,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 159 flow [2025-04-29 11:08:07,064 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2025-04-29 11:08:07,073 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2025-04-29 11:08:07,075 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 108 flow. Second operand 3 states and 148 transitions. [2025-04-29 11:08:07,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 159 flow [2025-04-29 11:08:07,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:07,083 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 158 flow [2025-04-29 11:08:07,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-04-29 11:08:07,089 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2025-04-29 11:08:07,089 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 158 flow [2025-04-29 11:08:07,089 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:07,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:08:07,090 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:08:07,090 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-29 11:08:07,090 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1539387295, now seen corresponding path program 1 times [2025-04-29 11:08:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:07,091 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490147746] [2025-04-29 11:08:07,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-29 11:08:07,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-29 11:08:07,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:07,125 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490147746] [2025-04-29 11:08:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490147746] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78544337] [2025-04-29 11:08:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:07,126 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:07,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:07,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:07,164 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 53 [2025-04-29 11:08:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 53 [2025-04-29 11:08:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:07,200 INFO L116 PetriNetUnfolderBase]: 26/183 cut-off events. [2025-04-29 11:08:07,200 INFO L117 PetriNetUnfolderBase]: For 64/67 co-relation queries the response was YES. [2025-04-29 11:08:07,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 183 events. 26/183 cut-off events. For 64/67 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 823 event pairs, 8 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 320. Up to 48 conditions per place. [2025-04-29 11:08:07,202 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 13 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2025-04-29 11:08:07,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 222 flow [2025-04-29 11:08:07,202 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2025-04-29 11:08:07,203 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9119496855345912 [2025-04-29 11:08:07,203 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 158 flow. Second operand 3 states and 145 transitions. [2025-04-29 11:08:07,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 222 flow [2025-04-29 11:08:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:07,207 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 202 flow [2025-04-29 11:08:07,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2025-04-29 11:08:07,209 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2025-04-29 11:08:07,209 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 202 flow [2025-04-29 11:08:07,209 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:07,209 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] [2025-04-29 11:08:07,210 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:08:07,210 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-29 11:08:07,210 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1126894325, now seen corresponding path program 1 times [2025-04-29 11:08:07,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:07,211 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447640181] [2025-04-29 11:08:07,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-29 11:08:07,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-29 11:08:07,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:08:07,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:07,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447640181] [2025-04-29 11:08:07,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447640181] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:07,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:07,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415064850] [2025-04-29 11:08:07,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:07,257 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:07,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:07,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:07,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:07,275 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 53 [2025-04-29 11:08:07,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:07,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 53 [2025-04-29 11:08:07,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:07,338 INFO L116 PetriNetUnfolderBase]: 33/216 cut-off events. [2025-04-29 11:08:07,338 INFO L117 PetriNetUnfolderBase]: For 145/147 co-relation queries the response was YES. [2025-04-29 11:08:07,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 216 events. 33/216 cut-off events. For 145/147 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1031 event pairs, 6 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 440. Up to 55 conditions per place. [2025-04-29 11:08:07,341 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 11 selfloop transitions, 7 changer transitions 6/67 dead transitions. [2025-04-29 11:08:07,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 270 flow [2025-04-29 11:08:07,342 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2025-04-29 11:08:07,343 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9056603773584906 [2025-04-29 11:08:07,343 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 202 flow. Second operand 3 states and 144 transitions. [2025-04-29 11:08:07,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 270 flow [2025-04-29 11:08:07,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:07,345 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 220 flow [2025-04-29 11:08:07,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2025-04-29 11:08:07,348 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2025-04-29 11:08:07,348 INFO L485 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 220 flow [2025-04-29 11:08:07,349 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:08:07,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:07,349 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] [2025-04-29 11:08:07,349 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:08:07,349 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-04-29 11:08:07,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1894338496, now seen corresponding path program 1 times [2025-04-29 11:08:07,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:07,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322499123] [2025-04-29 11:08:07,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:07,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-29 11:08:07,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-29 11:08:07,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:08:07,369 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:08:07,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-29 11:08:07,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-29 11:08:07,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:07,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:08:07,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:08:07,397 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:08:07,398 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2025-04-29 11:08:07,400 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2025-04-29 11:08:07,401 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2025-04-29 11:08:07,401 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:08:07,402 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:08:07,434 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:08:07,434 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:08:07,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:08:07 BasicIcfg [2025-04-29 11:08:07,438 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:08:07,438 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:08:07,438 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:08:07,439 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:08:07,439 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:08:06" (3/4) ... [2025-04-29 11:08:07,440 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:08:07,476 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 1. [2025-04-29 11:08:07,507 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:08:07,507 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:08:07,507 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:08:07,508 INFO L158 Benchmark]: Toolchain (without parser) took 1225.32ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 88.3MB in the end (delta: 19.1MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2025-04-29 11:08:07,509 INFO L158 Benchmark]: CDTParser took 1.53ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:07,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.96ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 93.8MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:07,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.08ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:07,510 INFO L158 Benchmark]: Boogie Preprocessor took 14.63ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 92.1MB in the end (delta: 554.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:07,510 INFO L158 Benchmark]: RCFGBuilder took 164.91ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 81.5MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:07,511 INFO L158 Benchmark]: TraceAbstraction took 739.91ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 94.7MB in the end (delta: -13.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:07,511 INFO L158 Benchmark]: Witness Printer took 68.78ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 88.3MB in the end (delta: 6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:07,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.53ms. Allocated memory is still 201.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.96ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 93.8MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.08ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.63ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 92.1MB in the end (delta: 554.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 164.91ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 81.5MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 739.91ms. Allocated memory is still 142.6MB. Free memory was 81.0MB in the beginning and 94.7MB in the end (delta: -13.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 68.78ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 88.3MB in the end (delta: 6.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 13]: Data race detected Data race detected The following path leads to a data race: [L10] 0 int x; VAL [x=0] [L18] 0 pthread_t id1, id2; VAL [x=0] [L20] FCALL, FORK 0 pthread_create(&id1, NULL, t_fun, NULL) VAL [\at(arg, Pre)={0:0}, id1=-1, x=0] [L21] FCALL, FORK 0 pthread_create(&id2, NULL, t_fun, NULL) VAL [\at(arg, Pre)={0:0}, id1=-1, id2=0, x=0] [L13] 1 x++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, x=0] [L13] 2 x++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, x=1] Now there is a data race on ~x~0 between C: x++ [13] and C: x++ [13] - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 71 locations, 69 edges, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 6 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:08:07,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(DATA-RACE)