./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2b-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2b-join.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 475c64db2a2029c09985266553634853aa5ae7653363254bdcc8a56a9d27dc04 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:02:15,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:02:16,037 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:02:16,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:02:16,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:02:16,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:02:16,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:02:16,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:02:16,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:02:16,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:02:16,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:02:16,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:02:16,075 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:02:16,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:02:16,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:02:16,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:02:16,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:02:16,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:02:16,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:02:16,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:02:16,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:02:16,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:02:16,079 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:02:16,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:02:16,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:02:16,080 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:02:16,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:02:16,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:02:16,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:02:16,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:02:16,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:02:16,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:02:16,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:02:16,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:02:16,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:02:16,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:02:16,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:02:16,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:02:16,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:02:16,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:02:16,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:02:16,085 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 475c64db2a2029c09985266553634853aa5ae7653363254bdcc8a56a9d27dc04 [2024-10-11 17:02:16,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:02:16,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:02:16,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:02:16,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:02:16,366 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:02:16,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2b-join.i [2024-10-11 17:02:17,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:02:17,964 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:02:17,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2b-join.i [2024-10-11 17:02:17,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e6108c076/1745d96dadbd43f28251ac824efe61dd/FLAG5dfd5a1ec [2024-10-11 17:02:18,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e6108c076/1745d96dadbd43f28251ac824efe61dd [2024-10-11 17:02:18,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:02:18,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:02:18,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:02:18,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:02:18,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:02:18,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:02:18" (1/1) ... [2024-10-11 17:02:18,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c675d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:18, skipping insertion in model container [2024-10-11 17:02:18,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:02:18" (1/1) ... [2024-10-11 17:02:18,310 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:02:18,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:02:18,921 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:02:18,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:02:19,084 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:02:19,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19 WrapperNode [2024-10-11 17:02:19,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:02:19,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:02:19,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:02:19,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:02:19,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,159 INFO L138 Inliner]: procedures = 481, calls = 25, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 119 [2024-10-11 17:02:19,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:02:19,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:02:19,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:02:19,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:02:19,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:02:19,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:02:19,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:02:19,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:02:19,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (1/1) ... [2024-10-11 17:02:19,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:02:19,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:02:19,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:02:19,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:02:19,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:02:19,293 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:02:19,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:02:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-11 17:02:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:02:19,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:02:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:02:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:02:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 17:02:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 17:02:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:02:19,296 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:02:19,508 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:02:19,511 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:02:19,726 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:02:19,727 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:02:19,748 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:02:19,748 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 17:02:19,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:02:19 BoogieIcfgContainer [2024-10-11 17:02:19,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:02:19,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:02:19,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:02:19,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:02:19,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:02:18" (1/3) ... [2024-10-11 17:02:19,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe421f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:02:19, skipping insertion in model container [2024-10-11 17:02:19,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:02:19" (2/3) ... [2024-10-11 17:02:19,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe421f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:02:19, skipping insertion in model container [2024-10-11 17:02:19,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:02:19" (3/3) ... [2024-10-11 17:02:19,759 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2b-join.i [2024-10-11 17:02:19,778 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:02:19,778 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-10-11 17:02:19,778 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:02:19,835 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 17:02:19,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 163 transitions, 333 flow [2024-10-11 17:02:19,926 INFO L124 PetriNetUnfolderBase]: 9/178 cut-off events. [2024-10-11 17:02:19,927 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:02:19,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 178 events. 9/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 94. Up to 3 conditions per place. [2024-10-11 17:02:19,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 163 transitions, 333 flow [2024-10-11 17:02:19,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 145 transitions, 296 flow [2024-10-11 17:02:19,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:02:19,957 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@900f8a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:02:19,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 17:02:19,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:02:19,967 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2024-10-11 17:02:19,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:02:19,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:19,969 INFO L204 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] [2024-10-11 17:02:19,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:19,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -540774703, now seen corresponding path program 1 times [2024-10-11 17:02:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514816282] [2024-10-11 17:02:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514816282] [2024-10-11 17:02:20,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514816282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055838489] [2024-10-11 17:02:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:20,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:20,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 163 [2024-10-11 17:02:20,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 145 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2024-10-11 17:02:20,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:20,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 163 [2024-10-11 17:02:20,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:20,535 INFO L124 PetriNetUnfolderBase]: 9/193 cut-off events. [2024-10-11 17:02:20,536 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 17:02:20,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 193 events. 9/193 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 500 event pairs, 9 based on Foata normal form. 8/177 useless extension candidates. Maximal degree in co-relation 120. Up to 36 conditions per place. [2024-10-11 17:02:20,538 INFO L140 encePairwiseOnDemand]: 154/163 looper letters, 16 selfloop transitions, 2 changer transitions 6/132 dead transitions. [2024-10-11 17:02:20,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 306 flow [2024-10-11 17:02:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2024-10-11 17:02:20,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8609406952965235 [2024-10-11 17:02:20,554 INFO L175 Difference]: Start difference. First operand has 142 places, 145 transitions, 296 flow. Second operand 3 states and 421 transitions. [2024-10-11 17:02:20,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 306 flow [2024-10-11 17:02:20,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:20,564 INFO L231 Difference]: Finished difference. Result has 135 places, 126 transitions, 258 flow [2024-10-11 17:02:20,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=135, PETRI_TRANSITIONS=126} [2024-10-11 17:02:20,570 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -7 predicate places. [2024-10-11 17:02:20,570 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 126 transitions, 258 flow [2024-10-11 17:02:20,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2024-10-11 17:02:20,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:20,571 INFO L204 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] [2024-10-11 17:02:20,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:02:20,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:20,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 203498822, now seen corresponding path program 1 times [2024-10-11 17:02:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893778236] [2024-10-11 17:02:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893778236] [2024-10-11 17:02:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893778236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:20,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382317622] [2024-10-11 17:02:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:20,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:20,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 163 [2024-10-11 17:02:20,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 126 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2024-10-11 17:02:20,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:20,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 163 [2024-10-11 17:02:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:20,772 INFO L124 PetriNetUnfolderBase]: 11/271 cut-off events. [2024-10-11 17:02:20,773 INFO L125 PetriNetUnfolderBase]: For 3/5 co-relation queries the response was YES. [2024-10-11 17:02:20,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 271 events. 11/271 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 932 event pairs, 3 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 289. Up to 22 conditions per place. [2024-10-11 17:02:20,775 INFO L140 encePairwiseOnDemand]: 150/163 looper letters, 15 selfloop transitions, 8 changer transitions 3/130 dead transitions. [2024-10-11 17:02:20,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 315 flow [2024-10-11 17:02:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2024-10-11 17:02:20,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8548057259713702 [2024-10-11 17:02:20,779 INFO L175 Difference]: Start difference. First operand has 135 places, 126 transitions, 258 flow. Second operand 3 states and 418 transitions. [2024-10-11 17:02:20,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 315 flow [2024-10-11 17:02:20,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 130 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:20,782 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 292 flow [2024-10-11 17:02:20,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-10-11 17:02:20,784 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -14 predicate places. [2024-10-11 17:02:20,784 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 292 flow [2024-10-11 17:02:20,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2024-10-11 17:02:20,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:20,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:20,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:02:20,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:20,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1756400261, now seen corresponding path program 1 times [2024-10-11 17:02:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255979703] [2024-10-11 17:02:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255979703] [2024-10-11 17:02:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255979703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723800384] [2024-10-11 17:02:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:20,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:20,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 163 [2024-10-11 17:02:20,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2024-10-11 17:02:20,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:20,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 163 [2024-10-11 17:02:20,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:20,943 INFO L124 PetriNetUnfolderBase]: 12/241 cut-off events. [2024-10-11 17:02:20,943 INFO L125 PetriNetUnfolderBase]: For 40/41 co-relation queries the response was YES. [2024-10-11 17:02:20,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 241 events. 12/241 cut-off events. For 40/41 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 798 event pairs, 7 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 48. Up to 44 conditions per place. [2024-10-11 17:02:20,945 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 18 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2024-10-11 17:02:20,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 123 transitions, 330 flow [2024-10-11 17:02:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:20,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2024-10-11 17:02:20,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8466257668711656 [2024-10-11 17:02:20,949 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 292 flow. Second operand 3 states and 414 transitions. [2024-10-11 17:02:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 123 transitions, 330 flow [2024-10-11 17:02:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:20,954 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 278 flow [2024-10-11 17:02:20,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-10-11 17:02:20,956 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -18 predicate places. [2024-10-11 17:02:20,956 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 278 flow [2024-10-11 17:02:20,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2024-10-11 17:02:20,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:20,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:20,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 17:02:20,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:20,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1009850407, now seen corresponding path program 1 times [2024-10-11 17:02:20,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:20,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972272005] [2024-10-11 17:02:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972272005] [2024-10-11 17:02:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972272005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865621756] [2024-10-11 17:02:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:21,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:21,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 163 [2024-10-11 17:02:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2024-10-11 17:02:21,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:21,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 163 [2024-10-11 17:02:21,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:21,091 INFO L124 PetriNetUnfolderBase]: 11/258 cut-off events. [2024-10-11 17:02:21,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 17:02:21,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 258 events. 11/258 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 858 event pairs, 4 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 282. Up to 31 conditions per place. [2024-10-11 17:02:21,115 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 11 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-10-11 17:02:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 306 flow [2024-10-11 17:02:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2024-10-11 17:02:21,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8813905930470347 [2024-10-11 17:02:21,118 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 278 flow. Second operand 3 states and 431 transitions. [2024-10-11 17:02:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 306 flow [2024-10-11 17:02:21,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:21,121 INFO L231 Difference]: Finished difference. Result has 123 places, 122 transitions, 276 flow [2024-10-11 17:02:21,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=123, PETRI_TRANSITIONS=122} [2024-10-11 17:02:21,122 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -19 predicate places. [2024-10-11 17:02:21,122 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 122 transitions, 276 flow [2024-10-11 17:02:21,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2024-10-11 17:02:21,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:21,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:21,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 17:02:21,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:21,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1895426691, now seen corresponding path program 1 times [2024-10-11 17:02:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232690981] [2024-10-11 17:02:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232690981] [2024-10-11 17:02:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232690981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273693265] [2024-10-11 17:02:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:21,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:21,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 163 [2024-10-11 17:02:21,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2024-10-11 17:02:21,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:21,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 163 [2024-10-11 17:02:21,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:21,275 INFO L124 PetriNetUnfolderBase]: 24/304 cut-off events. [2024-10-11 17:02:21,276 INFO L125 PetriNetUnfolderBase]: For 17/21 co-relation queries the response was YES. [2024-10-11 17:02:21,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 304 events. 24/304 cut-off events. For 17/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1259 event pairs, 11 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 315. Up to 59 conditions per place. [2024-10-11 17:02:21,277 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 21 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-10-11 17:02:21,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 127 transitions, 340 flow [2024-10-11 17:02:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2024-10-11 17:02:21,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8588957055214724 [2024-10-11 17:02:21,279 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 276 flow. Second operand 3 states and 420 transitions. [2024-10-11 17:02:21,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 127 transitions, 340 flow [2024-10-11 17:02:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 127 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:21,283 INFO L231 Difference]: Finished difference. Result has 125 places, 125 transitions, 308 flow [2024-10-11 17:02:21,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2024-10-11 17:02:21,284 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -17 predicate places. [2024-10-11 17:02:21,284 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 308 flow [2024-10-11 17:02:21,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2024-10-11 17:02:21,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:21,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:21,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 17:02:21,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:21,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash -99662353, now seen corresponding path program 1 times [2024-10-11 17:02:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491349823] [2024-10-11 17:02:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:02:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:02:21,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:02:21,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491349823] [2024-10-11 17:02:21,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491349823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:02:21,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:02:21,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:02:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052320648] [2024-10-11 17:02:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:02:21,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:02:21,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:02:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:02:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:02:21,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2024-10-11 17:02:21,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2024-10-11 17:02:21,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:02:21,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2024-10-11 17:02:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:02:21,429 INFO L124 PetriNetUnfolderBase]: 20/332 cut-off events. [2024-10-11 17:02:21,429 INFO L125 PetriNetUnfolderBase]: For 65/75 co-relation queries the response was YES. [2024-10-11 17:02:21,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 332 events. 20/332 cut-off events. For 65/75 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1485 event pairs, 5 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 247. Up to 57 conditions per place. [2024-10-11 17:02:21,430 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 17 selfloop transitions, 7 changer transitions 0/129 dead transitions. [2024-10-11 17:02:21,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 372 flow [2024-10-11 17:02:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:02:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:02:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2024-10-11 17:02:21,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8650306748466258 [2024-10-11 17:02:21,432 INFO L175 Difference]: Start difference. First operand has 125 places, 125 transitions, 308 flow. Second operand 3 states and 423 transitions. [2024-10-11 17:02:21,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 372 flow [2024-10-11 17:02:21,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 129 transitions, 358 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 17:02:21,438 INFO L231 Difference]: Finished difference. Result has 127 places, 129 transitions, 348 flow [2024-10-11 17:02:21,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=127, PETRI_TRANSITIONS=129} [2024-10-11 17:02:21,439 INFO L277 CegarLoopForPetriNet]: 142 programPoint places, -15 predicate places. [2024-10-11 17:02:21,440 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 129 transitions, 348 flow [2024-10-11 17:02:21,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2024-10-11 17:02:21,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:02:21,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:21,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 17:02:21,441 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 17:02:21,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:02:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash -447801414, now seen corresponding path program 1 times [2024-10-11 17:02:21,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:02:21,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943965380] [2024-10-11 17:02:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:02:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:02:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:02:21,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:02:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:02:21,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:02:21,511 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:02:21,512 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2024-10-11 17:02:21,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-11 17:02:21,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-11 17:02:21,516 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2024-10-11 17:02:21,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-11 17:02:21,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:02:21,518 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:02:21,560 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 17:02:21,560 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 17:02:21,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 05:02:21 BasicIcfg [2024-10-11 17:02:21,567 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 17:02:21,570 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 17:02:21,570 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 17:02:21,570 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 17:02:21,571 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:02:19" (3/4) ... [2024-10-11 17:02:21,572 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 17:02:21,576 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 17:02:21,577 INFO L158 Benchmark]: Toolchain (without parser) took 3325.23ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 80.3MB in the beginning and 76.9MB in the end (delta: 3.4MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,577 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 155.2MB. Free memory was 106.1MB in the beginning and 105.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 17:02:21,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.55ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 80.0MB in the beginning and 127.8MB in the end (delta: -47.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.08ms. Allocated memory is still 203.4MB. Free memory was 127.8MB in the beginning and 124.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,579 INFO L158 Benchmark]: Boogie Preprocessor took 44.12ms. Allocated memory is still 203.4MB. Free memory was 124.6MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,579 INFO L158 Benchmark]: RCFGBuilder took 543.98ms. Allocated memory is still 203.4MB. Free memory was 121.5MB in the beginning and 97.4MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,580 INFO L158 Benchmark]: TraceAbstraction took 1815.13ms. Allocated memory is still 203.4MB. Free memory was 97.4MB in the beginning and 76.9MB in the end (delta: 20.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-10-11 17:02:21,580 INFO L158 Benchmark]: Witness Printer took 6.39ms. Allocated memory is still 203.4MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 17:02:21,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 155.2MB. Free memory was 106.1MB in the beginning and 105.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.55ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 80.0MB in the beginning and 127.8MB in the end (delta: -47.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.08ms. Allocated memory is still 203.4MB. Free memory was 127.8MB in the beginning and 124.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.12ms. Allocated memory is still 203.4MB. Free memory was 124.6MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.98ms. Allocated memory is still 203.4MB. Free memory was 121.5MB in the beginning and 97.4MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1815.13ms. Allocated memory is still 203.4MB. Free memory was 97.4MB in the beginning and 76.9MB in the end (delta: 20.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 6.39ms. Allocated memory is still 203.4MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 1709]: Data race detected Data race detected The following path leads to a data race: [L1694] 0 pthread_t t1; VAL [t1=0] [L1695] 0 pthread_mutex_t mutex; VAL [mutex={3:0}, t1=0] [L1696] 0 int pdev; VAL [mutex={3:0}, pdev=0, t1=0] [L1726] CALL 0 module_init() [L1705] 0 pdev = 1 VAL [mutex={3:0}, pdev=1, t1=0] [L1706] EXPR 0 pdev==1 [L1706] CALL 0 ldv_assert(pdev==1) [L1693] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={3:0}, pdev=1, t1=0] [L1706] RET 0 ldv_assert(pdev==1) [L1707] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={3:0}, pdev=1, t1=0] [L1708] 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [mutex={3:0}, pdev=1, t1=-1] [L1708] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [\old(arg)={0:0}, mutex={3:0}, pdev=1, t1=-1] [L1709] 0 pdev = 2 VAL [\old(arg)={0:0}, mutex={3:0}, pdev=2, t1=-1] [L1699] 1 pdev = 6 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] [L1709] 0 pdev = 2 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] Now there is a data race on ~pdev~0 between C: pdev = 6 [1699] and C: pdev = 2 [1709] - UnprovableResult [Line: 1699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1708]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1722]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1723]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1708]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 169 locations, 13 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: 1.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 17 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=6, InterpolantAutomatonStates: 18, 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, 0.4s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate proved your program to be incorrect! [2024-10-11 17:02:21,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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