./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.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/03-practical_15-exit_problems.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 5a6f58d33d2b81528ca8565b89a520d0b28390552fc2b179422de5d107efa015 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:07:48,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:07:49,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-04-29 11:07:49,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:07:49,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:07:49,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:07:49,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:07:49,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:07:49,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:07:49,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:07:49,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:07:49,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:07:49,066 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:07:49,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:07:49,067 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:07:49,068 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:07:49,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:49,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:49,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:07:49,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:07:49,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:07:49,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:07:49,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:07:49,071 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 -> 5a6f58d33d2b81528ca8565b89a520d0b28390552fc2b179422de5d107efa015 [2025-04-29 11:07:49,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:07:49,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:07:49,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:07:49,330 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:07:49,331 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:07:49,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.c [2025-04-29 11:07:50,630 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a251f9da/b2b157ddb37b4f43b279c592042cefeb/FLAG93fc7c3e8 [2025-04-29 11:07:50,816 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:07:50,816 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.c [2025-04-29 11:07:50,817 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:07:50,818 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:07:50,822 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a251f9da/b2b157ddb37b4f43b279c592042cefeb/FLAG93fc7c3e8 [2025-04-29 11:07:51,629 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a251f9da/b2b157ddb37b4f43b279c592042cefeb [2025-04-29 11:07:51,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:07:51,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:07:51,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:07:51,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:07:51,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:07:51,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e428185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51, skipping insertion in model container [2025-04-29 11:07:51,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:07:51,799 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:07:51,807 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:07:51,831 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:07:51,845 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:07:51,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51 WrapperNode [2025-04-29 11:07:51,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:07:51,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:07:51,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:07:51,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:07:51,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,867 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2025-04-29 11:07:51,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:07:51,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:07:51,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:07:51,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:07:51,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:07:51,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:07:51,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:07:51,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:07:51,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (1/1) ... [2025-04-29 11:07:51,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:51,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:07:51,913 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 11:07:51,917 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 11:07:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:07:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:07:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:07:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:07:51,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:07:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-29 11:07:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:07:51,934 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:07:51,935 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 11:07:51,997 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:07:51,999 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:07:52,088 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:07:52,088 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:07:52,107 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:07:52,107 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-29 11:07:52,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:52 BoogieIcfgContainer [2025-04-29 11:07:52,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:07:52,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:07:52,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:07:52,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:07:52,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:07:51" (1/3) ... [2025-04-29 11:07:52,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19390de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:07:52, skipping insertion in model container [2025-04-29 11:07:52,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:51" (2/3) ... [2025-04-29 11:07:52,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19390de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:07:52, skipping insertion in model container [2025-04-29 11:07:52,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:52" (3/3) ... [2025-04-29 11:07:52,117 INFO L128 eAbstractionObserver]: Analyzing ICFG 03-practical_15-exit_problems.c [2025-04-29 11:07:52,128 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:07:52,130 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 03-practical_15-exit_problems.c that has 2 procedures, 69 locations, 68 edges, 1 initial locations, 1 loop locations, and 5 error locations. [2025-04-29 11:07:52,131 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:07:52,178 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:07:52,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 69 transitions, 142 flow [2025-04-29 11:07:52,228 INFO L116 PetriNetUnfolderBase]: 1/68 cut-off events. [2025-04-29 11:07:52,230 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:07:52,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2025-04-29 11:07:52,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 69 transitions, 142 flow [2025-04-29 11:07:52,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 68 transitions, 139 flow [2025-04-29 11:07:52,243 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:07:52,254 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;@6fb10c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:07:52,255 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-29 11:07:52,262 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:07:52,262 INFO L116 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-04-29 11:07:52,262 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:07:52,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:07:52,263 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] [2025-04-29 11:07:52,263 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-04-29 11:07:52,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:07:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash 706344149, now seen corresponding path program 1 times [2025-04-29 11:07:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:07:52,273 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055569503] [2025-04-29 11:07:52,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:07:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:07:52,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-29 11:07:52,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-29 11:07:52,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:52,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:07:52,427 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 11:07:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:07:52,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055569503] [2025-04-29 11:07:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055569503] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:07:52,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:07:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:07:52,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533304050] [2025-04-29 11:07:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:07:52,436 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:07:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:07:52,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:07:52,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:07:52,519 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 69 [2025-04-29 11:07:52,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 11:07:52,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:07:52,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 69 [2025-04-29 11:07:52,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:07:52,601 INFO L116 PetriNetUnfolderBase]: 31/192 cut-off events. [2025-04-29 11:07:52,601 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:07:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 192 events. 31/192 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 804 event pairs, 13 based on Foata normal form. 13/185 useless extension candidates. Maximal degree in co-relation 254. Up to 44 conditions per place. [2025-04-29 11:07:52,603 INFO L140 encePairwiseOnDemand]: 59/69 looper letters, 17 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2025-04-29 11:07:52,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 177 flow [2025-04-29 11:07:52,604 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:07:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:07:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2025-04-29 11:07:52,617 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9082125603864735 [2025-04-29 11:07:52,619 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 139 flow. Second operand 3 states and 188 transitions. [2025-04-29 11:07:52,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 177 flow [2025-04-29 11:07:52,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:07:52,629 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 162 flow [2025-04-29 11:07:52,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2025-04-29 11:07:52,635 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2025-04-29 11:07:52,635 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 162 flow [2025-04-29 11:07:52,636 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 11:07:52,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:07:52,636 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] [2025-04-29 11:07:52,636 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:07:52,636 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-04-29 11:07:52,637 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:07:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 311346321, now seen corresponding path program 1 times [2025-04-29 11:07:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:07:52,637 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524384233] [2025-04-29 11:07:52,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:07:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:07:52,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-29 11:07:52,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-29 11:07:52,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:52,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:07:52,684 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 11:07:52,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:07:52,684 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524384233] [2025-04-29 11:07:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524384233] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:07:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:07:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:07:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314894404] [2025-04-29 11:07:52,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:07:52,685 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:07:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:07:52,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:07:52,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:07:52,719 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 69 [2025-04-29 11:07:52,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:07:52,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:07:52,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 69 [2025-04-29 11:07:52,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:07:52,803 INFO L116 PetriNetUnfolderBase]: 46/240 cut-off events. [2025-04-29 11:07:52,803 INFO L117 PetriNetUnfolderBase]: For 89/92 co-relation queries the response was YES. [2025-04-29 11:07:52,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 240 events. 46/240 cut-off events. For 89/92 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 21 based on Foata normal form. 2/222 useless extension candidates. Maximal degree in co-relation 421. Up to 86 conditions per place. [2025-04-29 11:07:52,805 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 16 selfloop transitions, 7 changer transitions 1/67 dead transitions. [2025-04-29 11:07:52,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 234 flow [2025-04-29 11:07:52,806 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:07:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:07:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-04-29 11:07:52,807 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2025-04-29 11:07:52,807 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 162 flow. Second operand 3 states and 179 transitions. [2025-04-29 11:07:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 234 flow [2025-04-29 11:07:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:07:52,809 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 206 flow [2025-04-29 11:07:52,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2025-04-29 11:07:52,810 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2025-04-29 11:07:52,810 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 206 flow [2025-04-29 11:07:52,810 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:07:52,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:07:52,810 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:07:52,810 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:07:52,810 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-04-29 11:07:52,811 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:07:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash 893195860, now seen corresponding path program 1 times [2025-04-29 11:07:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:07:52,811 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620720855] [2025-04-29 11:07:52,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:07:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:07:52,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-04-29 11:07:52,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-04-29 11:07:52,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:52,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:07:52,858 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 11:07:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:07:52,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620720855] [2025-04-29 11:07:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620720855] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:07:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:07:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:07:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960092350] [2025-04-29 11:07:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:07:52,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:07:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:07:52,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:07:52,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:07:52,898 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 69 [2025-04-29 11:07:52,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 11:07:52,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:07:52,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 69 [2025-04-29 11:07:52,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:07:52,970 INFO L116 PetriNetUnfolderBase]: 63/308 cut-off events. [2025-04-29 11:07:52,970 INFO L117 PetriNetUnfolderBase]: For 196/200 co-relation queries the response was YES. [2025-04-29 11:07:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 308 events. 63/308 cut-off events. For 196/200 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1570 event pairs, 25 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 613. Up to 108 conditions per place. [2025-04-29 11:07:52,972 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 16 selfloop transitions, 7 changer transitions 7/72 dead transitions. [2025-04-29 11:07:52,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 290 flow [2025-04-29 11:07:52,974 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:07:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:07:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2025-04-29 11:07:52,976 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8405797101449275 [2025-04-29 11:07:52,977 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 206 flow. Second operand 3 states and 174 transitions. [2025-04-29 11:07:52,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 290 flow [2025-04-29 11:07:52,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:07:52,981 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 224 flow [2025-04-29 11:07:52,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-04-29 11:07:52,982 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2025-04-29 11:07:52,983 INFO L485 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 224 flow [2025-04-29 11:07:52,983 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 11:07:52,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:07:52,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:07:52,983 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:07:52,983 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-04-29 11:07:52,984 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:07:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1858051794, now seen corresponding path program 1 times [2025-04-29 11:07:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:07:52,985 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400091955] [2025-04-29 11:07:52,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:07:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:07:52,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-29 11:07:53,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-29 11:07:53,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:53,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:07:53,013 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:07:53,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-29 11:07:53,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-29 11:07:53,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:53,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:07:53,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:07:53,041 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:07:53,042 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2025-04-29 11:07:53,043 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2025-04-29 11:07:53,043 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2025-04-29 11:07:53,043 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-04-29 11:07:53,044 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2025-04-29 11:07:53,044 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2025-04-29 11:07:53,044 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2025-04-29 11:07:53,044 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2025-04-29 11:07:53,044 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:07:53,044 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:07:53,081 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:07:53,082 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:07:53,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:07:53 BasicIcfg [2025-04-29 11:07:53,089 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:07:53,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:07:53,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:07:53,089 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:07:53,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:52" (3/4) ... [2025-04-29 11:07:53,090 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:07:53,122 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-04-29 11:07:53,154 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:07:53,154 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:07:53,154 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:07:53,155 INFO L158 Benchmark]: Toolchain (without parser) took 1522.21ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 75.7MB in the end (delta: 36.2MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2025-04-29 11:07:53,155 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 201.3MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:07:53,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.15ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 98.1MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:07:53,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.45ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:07:53,156 INFO L158 Benchmark]: Boogie Preprocessor took 16.69ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.9MB in the end (delta: 907.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:07:53,157 INFO L158 Benchmark]: RCFGBuilder took 222.45ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 83.0MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:07:53,157 INFO L158 Benchmark]: TraceAbstraction took 979.81ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 82.6MB in the end (delta: -404.0kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2025-04-29 11:07:53,157 INFO L158 Benchmark]: Witness Printer took 64.78ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 75.7MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:07:53,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 201.3MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.15ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 98.1MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.45ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.69ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.9MB in the end (delta: 907.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.45ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 83.0MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 979.81ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 82.6MB in the end (delta: -404.0kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 64.78ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 75.7MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 19]: Data race detected Data race detected The following path leads to a data race: [L13] 0 int glob; VAL [glob=0] [L14] 0 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; VAL [glob=0, mutex={1:0}] [L15] 0 pthread_mutex_t bad = PTHREAD_MUTEX_INITIALIZER; VAL [bad={2:0}, glob=0, mutex={1:0}] [L32] 0 pthread_t id; VAL [bad={2:0}, glob=0, mutex={1:0}] [L33] FCALL, FORK 0 pthread_create(&id, NULL, t_fun, NULL) VAL [\at(arg, Pre)={0:0}, bad={2:0}, glob=0, id=-1, mutex={1:0}] [L35] CALL 0 f(&bad) [L26] 1 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, bad={2:0}, glob=0, mutex={1:0}] [L26] 1 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, bad={2:0}, glob=0, mutex={1:0}] [L19] 0 glob++ VAL [\at(arg, Pre)={0:0}, \at(m, Pre)={2:0}, arg={0:0}, bad={2:0}, glob=0, m={2:0}, mutex={1:0}] [L26] 1 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, bad={2:0}, glob=1, mutex={1:0}] [L19] 0 glob++ VAL [\at(arg, Pre)={0:0}, \at(m, Pre)={2:0}, arg={0:0}, bad={2:0}, glob=1, m={2:0}, mutex={1:0}] Now there is a data race on ~glob~0 between C: glob++ [26] and C: glob++ [19] - UnprovableResult [Line: 38]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 33]: 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: 26]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 26]: 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 3 procedures, 89 locations, 88 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: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 24 mSDtfsCounter, 124 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=224occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 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 11:07:53,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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)