./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/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:48:52,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:48:52,740 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:48:52,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:48:52,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:48:52,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:48:52,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:48:52,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:48:52,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:48:52,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:48:52,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:48:52,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:48:52,766 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:48:52,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:48:52,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:48:52,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:48:52,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:48:52,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:48:52,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:48:52,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:48:52,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:48:52,775 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2024-10-14 16:48:52,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:48:52,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:48:52,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:48:52,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:48:52,968 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:48:52,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-10-14 16:48:54,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:48:54,380 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:48:54,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-10-14 16:48:54,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694eb7667/3f5522c0045b454d8c86e7d43ca57231/FLAGcb0ee568d [2024-10-14 16:48:54,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694eb7667/3f5522c0045b454d8c86e7d43ca57231 [2024-10-14 16:48:54,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:48:54,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:48:54,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:48:54,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:48:54,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:48:54,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:54" (1/1) ... [2024-10-14 16:48:54,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7277252d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:54, skipping insertion in model container [2024-10-14 16:48:54,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:54" (1/1) ... [2024-10-14 16:48:54,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:48:55,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:48:55,129 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:48:55,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:48:55,203 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:48:55,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55 WrapperNode [2024-10-14 16:48:55,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:48:55,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:48:55,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:48:55,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:48:55,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,239 INFO L138 Inliner]: procedures = 174, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 94 [2024-10-14 16:48:55,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:48:55,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:48:55,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:48:55,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:48:55,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:48:55,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:48:55,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:48:55,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:48:55,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (1/1) ... [2024-10-14 16:48:55,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:48:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:48:55,289 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) [2024-10-14 16:48:55,292 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 [2024-10-14 16:48:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:48:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:48:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 16:48:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:48:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:48:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 16:48:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:48:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:48:55,327 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 16:48:55,417 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:48:55,418 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:48:55,526 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:48:55,526 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:48:55,581 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:48:55,581 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 16:48:55,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:55 BoogieIcfgContainer [2024-10-14 16:48:55,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:48:55,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:48:55,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:48:55,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:48:55,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:54" (1/3) ... [2024-10-14 16:48:55,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298d2269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:55, skipping insertion in model container [2024-10-14 16:48:55,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:55" (2/3) ... [2024-10-14 16:48:55,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298d2269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:55, skipping insertion in model container [2024-10-14 16:48:55,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:55" (3/3) ... [2024-10-14 16:48:55,588 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-10-14 16:48:55,600 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:48:55,600 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-14 16:48:55,600 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:48:55,645 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:48:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 144 flow [2024-10-14 16:48:55,696 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2024-10-14 16:48:55,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:48:55,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 4/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-10-14 16:48:55,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 144 flow [2024-10-14 16:48:55,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 144 flow [2024-10-14 16:48:55,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:48:55,722 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;@229826ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:48:55,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-14 16:48:55,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:48:55,732 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-14 16:48:55,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:48:55,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:55,733 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] [2024-10-14 16:48:55,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-14 16:48:55,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1469180269, now seen corresponding path program 1 times [2024-10-14 16:48:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:55,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316318173] [2024-10-14 16:48:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:55,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:55,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316318173] [2024-10-14 16:48:55,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316318173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:55,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:55,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:48:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840687431] [2024-10-14 16:48:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:55,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:48:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:48:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:48:55,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 70 [2024-10-14 16:48:55,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-10-14 16:48:55,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:55,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 70 [2024-10-14 16:48:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:55,974 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2024-10-14 16:48:55,974 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:48:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 62 events. 1/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 7/67 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-10-14 16:48:55,975 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 5 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-10-14 16:48:55,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 130 flow [2024-10-14 16:48:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:48:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:48:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 126 transitions. [2024-10-14 16:48:55,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9 [2024-10-14 16:48:55,985 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 144 flow. Second operand 2 states and 126 transitions. [2024-10-14 16:48:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 130 flow [2024-10-14 16:48:55,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:55,991 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 120 flow [2024-10-14 16:48:55,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-14 16:48:55,997 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2024-10-14 16:48:55,998 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 120 flow [2024-10-14 16:48:55,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-10-14 16:48:55,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:55,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:48:55,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:48:55,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-14 16:48:56,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2069930490, now seen corresponding path program 1 times [2024-10-14 16:48:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296595128] [2024-10-14 16:48:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:56,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:48:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:56,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:48:56,067 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:48:56,069 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-14 16:48:56,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-14 16:48:56,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-14 16:48:56,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-14 16:48:56,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-14 16:48:56,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-14 16:48:56,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-14 16:48:56,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-14 16:48:56,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:48:56,072 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:48:56,074 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:48:56,074 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:48:56,105 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:48:56,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 117 transitions, 244 flow [2024-10-14 16:48:56,131 INFO L124 PetriNetUnfolderBase]: 7/137 cut-off events. [2024-10-14 16:48:56,132 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:48:56,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-10-14 16:48:56,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 117 transitions, 244 flow [2024-10-14 16:48:56,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 117 transitions, 244 flow [2024-10-14 16:48:56,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:48:56,136 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;@229826ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:48:56,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 16:48:56,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:48:56,140 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-14 16:48:56,140 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:48:56,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:56,141 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] [2024-10-14 16:48:56,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:48:56,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1586066434, now seen corresponding path program 1 times [2024-10-14 16:48:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361626426] [2024-10-14 16:48:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:56,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361626426] [2024-10-14 16:48:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361626426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:56,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:48:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544262489] [2024-10-14 16:48:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:56,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:48:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:48:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:48:56,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 117 [2024-10-14 16:48:56,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 244 flow. Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 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) [2024-10-14 16:48:56,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:56,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 117 [2024-10-14 16:48:56,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:56,263 INFO L124 PetriNetUnfolderBase]: 27/317 cut-off events. [2024-10-14 16:48:56,264 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 16:48:56,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 317 events. 27/317 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1178 event pairs, 20 based on Foata normal form. 40/341 useless extension candidates. Maximal degree in co-relation 296. Up to 51 conditions per place. [2024-10-14 16:48:56,270 INFO L140 encePairwiseOnDemand]: 101/117 looper letters, 10 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2024-10-14 16:48:56,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 226 flow [2024-10-14 16:48:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:48:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:48:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2024-10-14 16:48:56,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-10-14 16:48:56,273 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 244 flow. Second operand 2 states and 208 transitions. [2024-10-14 16:48:56,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 226 flow [2024-10-14 16:48:56,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:56,276 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 206 flow [2024-10-14 16:48:56,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-10-14 16:48:56,277 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, -15 predicate places. [2024-10-14 16:48:56,277 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 206 flow [2024-10-14 16:48:56,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 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) [2024-10-14 16:48:56,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:56,277 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] [2024-10-14 16:48:56,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:48:56,279 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:48:56,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1570389665, now seen corresponding path program 1 times [2024-10-14 16:48:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660139076] [2024-10-14 16:48:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660139076] [2024-10-14 16:48:56,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660139076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:56,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:56,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:48:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554598696] [2024-10-14 16:48:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:56,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:48:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:48:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:48:56,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 117 [2024-10-14 16:48:56,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2024-10-14 16:48:56,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:56,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 117 [2024-10-14 16:48:56,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:56,435 INFO L124 PetriNetUnfolderBase]: 64/496 cut-off events. [2024-10-14 16:48:56,435 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-14 16:48:56,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 496 events. 64/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2317 event pairs, 20 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 647. Up to 80 conditions per place. [2024-10-14 16:48:56,441 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 21 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2024-10-14 16:48:56,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 295 flow [2024-10-14 16:48:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:48:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:48:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2024-10-14 16:48:56,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-10-14 16:48:56,446 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 206 flow. Second operand 3 states and 286 transitions. [2024-10-14 16:48:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 111 transitions, 295 flow [2024-10-14 16:48:56,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 111 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:56,451 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 274 flow [2024-10-14 16:48:56,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-10-14 16:48:56,454 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, -11 predicate places. [2024-10-14 16:48:56,454 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 274 flow [2024-10-14 16:48:56,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2024-10-14 16:48:56,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:56,455 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:48:56,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:48:56,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-14 16:48:56,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1910211048, now seen corresponding path program 1 times [2024-10-14 16:48:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217736079] [2024-10-14 16:48:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:56,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:48:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:56,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:48:56,505 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:48:56,505 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-14 16:48:56,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-14 16:48:56,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-14 16:48:56,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-14 16:48:56,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-14 16:48:56,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-14 16:48:56,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-14 16:48:56,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-14 16:48:56,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-14 16:48:56,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-14 16:48:56,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-14 16:48:56,509 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-14 16:48:56,509 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-14 16:48:56,509 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-14 16:48:56,510 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-14 16:48:56,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:48:56,510 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 16:48:56,510 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:48:56,510 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:48:56,540 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:48:56,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 164 transitions, 346 flow [2024-10-14 16:48:56,560 INFO L124 PetriNetUnfolderBase]: 10/195 cut-off events. [2024-10-14 16:48:56,561 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:48:56,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 10/195 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2024-10-14 16:48:56,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 164 transitions, 346 flow [2024-10-14 16:48:56,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 164 transitions, 346 flow [2024-10-14 16:48:56,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:48:56,567 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;@229826ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:48:56,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 16:48:56,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:48:56,573 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-14 16:48:56,573 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:48:56,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:56,573 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] [2024-10-14 16:48:56,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:48:56,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2075308856, now seen corresponding path program 1 times [2024-10-14 16:48:56,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10467672] [2024-10-14 16:48:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10467672] [2024-10-14 16:48:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10467672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:56,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:56,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:48:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574263506] [2024-10-14 16:48:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:56,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:48:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:48:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:48:56,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 164 [2024-10-14 16:48:56,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 346 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2024-10-14 16:48:56,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:56,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 164 [2024-10-14 16:48:56,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:56,799 INFO L124 PetriNetUnfolderBase]: 253/1688 cut-off events. [2024-10-14 16:48:56,799 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-14 16:48:56,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 1688 events. 253/1688 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12768 event pairs, 220 based on Foata normal form. 218/1815 useless extension candidates. Maximal degree in co-relation 1658. Up to 376 conditions per place. [2024-10-14 16:48:56,810 INFO L140 encePairwiseOnDemand]: 141/164 looper letters, 15 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2024-10-14 16:48:56,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 324 flow [2024-10-14 16:48:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:48:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:48:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2024-10-14 16:48:56,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8841463414634146 [2024-10-14 16:48:56,813 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 346 flow. Second operand 2 states and 290 transitions. [2024-10-14 16:48:56,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 324 flow [2024-10-14 16:48:56,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 138 transitions, 322 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:56,816 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 292 flow [2024-10-14 16:48:56,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-10-14 16:48:56,817 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -21 predicate places. [2024-10-14 16:48:56,817 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 292 flow [2024-10-14 16:48:56,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2024-10-14 16:48:56,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:56,817 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] [2024-10-14 16:48:56,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:48:56,817 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:48:56,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash -527456305, now seen corresponding path program 1 times [2024-10-14 16:48:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494728362] [2024-10-14 16:48:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:56,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494728362] [2024-10-14 16:48:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494728362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:48:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867336762] [2024-10-14 16:48:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:56,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:48:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:48:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:48:56,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 164 [2024-10-14 16:48:56,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-10-14 16:48:56,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:56,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 164 [2024-10-14 16:48:56,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:57,409 INFO L124 PetriNetUnfolderBase]: 1172/5010 cut-off events. [2024-10-14 16:48:57,409 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-14 16:48:57,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7042 conditions, 5010 events. 1172/5010 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 47518 event pairs, 427 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 7036. Up to 1116 conditions per place. [2024-10-14 16:48:57,466 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 32 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2024-10-14 16:48:57,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 158 transitions, 430 flow [2024-10-14 16:48:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:48:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:48:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2024-10-14 16:48:57,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8089430894308943 [2024-10-14 16:48:57,468 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 292 flow. Second operand 3 states and 398 transitions. [2024-10-14 16:48:57,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 158 transitions, 430 flow [2024-10-14 16:48:57,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 158 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:57,471 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 394 flow [2024-10-14 16:48:57,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2024-10-14 16:48:57,474 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2024-10-14 16:48:57,474 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 394 flow [2024-10-14 16:48:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2024-10-14 16:48:57,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:57,475 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:48:57,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:48:57,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:48:57,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1337090110, now seen corresponding path program 1 times [2024-10-14 16:48:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757168696] [2024-10-14 16:48:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:57,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:48:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:57,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:48:57,506 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-14 16:48:57,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-14 16:48:57,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-14 16:48:57,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-14 16:48:57,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-14 16:48:57,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:48:57,513 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 16:48:57,514 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:48:57,514 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:48:57,551 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:48:57,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 211 transitions, 450 flow [2024-10-14 16:48:57,577 INFO L124 PetriNetUnfolderBase]: 13/253 cut-off events. [2024-10-14 16:48:57,578 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:48:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 253 events. 13/253 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 753 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 203. Up to 10 conditions per place. [2024-10-14 16:48:57,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 211 transitions, 450 flow [2024-10-14 16:48:57,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 211 transitions, 450 flow [2024-10-14 16:48:57,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:48:57,587 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;@229826ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:48:57,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-14 16:48:57,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:48:57,589 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-10-14 16:48:57,589 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:48:57,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:57,590 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] [2024-10-14 16:48:57,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:48:57,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1409578219, now seen corresponding path program 1 times [2024-10-14 16:48:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339124040] [2024-10-14 16:48:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339124040] [2024-10-14 16:48:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339124040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:48:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142545306] [2024-10-14 16:48:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:57,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:48:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:48:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:48:57,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 211 [2024-10-14 16:48:57,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 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) [2024-10-14 16:48:57,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:57,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 211 [2024-10-14 16:48:57,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:58,542 INFO L124 PetriNetUnfolderBase]: 1859/9003 cut-off events. [2024-10-14 16:48:58,542 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-10-14 16:48:58,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12251 conditions, 9003 events. 1859/9003 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 97776 event pairs, 1720 based on Foata normal form. 1202/9736 useless extension candidates. Maximal degree in co-relation 9208. Up to 2501 conditions per place. [2024-10-14 16:48:58,618 INFO L140 encePairwiseOnDemand]: 181/211 looper letters, 20 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2024-10-14 16:48:58,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 178 transitions, 424 flow [2024-10-14 16:48:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:48:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:48:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 372 transitions. [2024-10-14 16:48:58,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8815165876777251 [2024-10-14 16:48:58,620 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 450 flow. Second operand 2 states and 372 transitions. [2024-10-14 16:48:58,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 178 transitions, 424 flow [2024-10-14 16:48:58,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 178 transitions, 418 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:58,624 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 378 flow [2024-10-14 16:48:58,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=378, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2024-10-14 16:48:58,625 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, -27 predicate places. [2024-10-14 16:48:58,625 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 378 flow [2024-10-14 16:48:58,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 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) [2024-10-14 16:48:58,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:58,625 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] [2024-10-14 16:48:58,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:48:58,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:48:58,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:58,626 INFO L85 PathProgramCache]: Analyzing trace with hash 850364957, now seen corresponding path program 1 times [2024-10-14 16:48:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431297818] [2024-10-14 16:48:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:58,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431297818] [2024-10-14 16:48:58,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431297818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:58,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:48:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895683112] [2024-10-14 16:48:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:58,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:48:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:48:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:48:58,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 211 [2024-10-14 16:48:58,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-10-14 16:48:58,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:58,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 211 [2024-10-14 16:48:58,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:49:03,121 INFO L124 PetriNetUnfolderBase]: 15875/50469 cut-off events. [2024-10-14 16:49:03,121 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-10-14 16:49:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74286 conditions, 50469 events. 15875/50469 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 661210 event pairs, 6167 based on Foata normal form. 0/47621 useless extension candidates. Maximal degree in co-relation 74279. Up to 13336 conditions per place. [2024-10-14 16:49:03,547 INFO L140 encePairwiseOnDemand]: 191/211 looper letters, 43 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2024-10-14 16:49:03,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 205 transitions, 565 flow [2024-10-14 16:49:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:49:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:49:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2024-10-14 16:49:03,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8056872037914692 [2024-10-14 16:49:03,549 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 378 flow. Second operand 3 states and 510 transitions. [2024-10-14 16:49:03,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 205 transitions, 565 flow [2024-10-14 16:49:03,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 205 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:49:03,555 INFO L231 Difference]: Finished difference. Result has 188 places, 194 transitions, 514 flow [2024-10-14 16:49:03,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=188, PETRI_TRANSITIONS=194} [2024-10-14 16:49:03,556 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, -23 predicate places. [2024-10-14 16:49:03,556 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 194 transitions, 514 flow [2024-10-14 16:49:03,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-10-14 16:49:03,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:49:03,557 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:49:03,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:49:03,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-14 16:49:03,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:49:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1126513837, now seen corresponding path program 1 times [2024-10-14 16:49:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:49:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17759400] [2024-10-14 16:49:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:49:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:49:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:49:03,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:49:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:49:03,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:49:03,587 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-10-14 16:49:03,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-10-14 16:49:03,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-10-14 16:49:03,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-10-14 16:49:03,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-10-14 16:49:03,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-10-14 16:49:03,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-10-14 16:49:03,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-10-14 16:49:03,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-10-14 16:49:03,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-10-14 16:49:03,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:49:03,591 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 16:49:03,592 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:49:03,592 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 16:49:03,625 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:49:03,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 258 transitions, 556 flow [2024-10-14 16:49:03,652 INFO L124 PetriNetUnfolderBase]: 16/311 cut-off events. [2024-10-14 16:49:03,652 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 16:49:03,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 311 events. 16/311 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1029 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 266. Up to 12 conditions per place. [2024-10-14 16:49:03,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 258 transitions, 556 flow [2024-10-14 16:49:03,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 258 transitions, 556 flow [2024-10-14 16:49:03,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:49:03,664 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;@229826ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:49:03,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-10-14 16:49:03,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:49:03,665 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-14 16:49:03,666 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:49:03,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:49:03,666 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] [2024-10-14 16:49:03,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-14 16:49:03,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:49:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1879868497, now seen corresponding path program 1 times [2024-10-14 16:49:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:49:03,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880157202] [2024-10-14 16:49:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:49:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:49:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:49:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:49:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:49:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880157202] [2024-10-14 16:49:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880157202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:49:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:49:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:49:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76351506] [2024-10-14 16:49:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:49:03,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:49:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:49:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:49:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:49:03,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 258 [2024-10-14 16:49:03,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 556 flow. Second operand has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 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) [2024-10-14 16:49:03,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:49:03,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 258 [2024-10-14 16:49:03,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:49:09,205 INFO L124 PetriNetUnfolderBase]: 12349/48214 cut-off events. [2024-10-14 16:49:09,205 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-10-14 16:49:09,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68338 conditions, 48214 events. 12349/48214 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 662952 event pairs, 11720 based on Foata normal form. 6714/52552 useless extension candidates. Maximal degree in co-relation 51110. Up to 15626 conditions per place. [2024-10-14 16:49:09,625 INFO L140 encePairwiseOnDemand]: 221/258 looper letters, 25 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2024-10-14 16:49:09,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 218 transitions, 526 flow [2024-10-14 16:49:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:49:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:49:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 454 transitions. [2024-10-14 16:49:09,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8798449612403101 [2024-10-14 16:49:09,627 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 556 flow. Second operand 2 states and 454 transitions. [2024-10-14 16:49:09,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 218 transitions, 526 flow [2024-10-14 16:49:09,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 514 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 16:49:09,633 INFO L231 Difference]: Finished difference. Result has 225 places, 218 transitions, 464 flow [2024-10-14 16:49:09,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=464, PETRI_PLACES=225, PETRI_TRANSITIONS=218} [2024-10-14 16:49:09,635 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, -33 predicate places. [2024-10-14 16:49:09,635 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 218 transitions, 464 flow [2024-10-14 16:49:09,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 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) [2024-10-14 16:49:09,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:49:09,635 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] [2024-10-14 16:49:09,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:49:09,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-14 16:49:09,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:49:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1084927819, now seen corresponding path program 1 times [2024-10-14 16:49:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:49:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894398090] [2024-10-14 16:49:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:49:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:49:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:49:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:49:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:49:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894398090] [2024-10-14 16:49:09,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894398090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:49:09,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:49:09,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:49:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740615895] [2024-10-14 16:49:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:49:09,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:49:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:49:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:49:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:49:09,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 258 [2024-10-14 16:49:09,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 218 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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) [2024-10-14 16:49:09,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:49:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 258 [2024-10-14 16:49:09,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand