./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/01_inc.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/01_inc.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 dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:44:24,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:44:24,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:44:24,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:44:24,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:44:24,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:44:24,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:44:24,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:44:24,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:44:24,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:44:24,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:44:24,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:44:24,944 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:44:24,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:44:24,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:44:24,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:44:24,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:44:24,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:44:24,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:44:24,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:44:24,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:44:24,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:44:24,952 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:44:24,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:44:24,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:44:24,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:44:24,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:44:24,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:44:24,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:44:24,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:44:24,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:44:24,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:44:24,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:44:24,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:44:24,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:44:24,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:44:24,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:44:24,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:44:24,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:44:24,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:44:24,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:44:24,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 [2024-10-14 16:44:25,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:44:25,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:44:25,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:44:25,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:44:25,279 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:44:25,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01_inc.i [2024-10-14 16:44:26,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:44:26,939 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:44:26,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01_inc.i [2024-10-14 16:44:26,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58630b1f8/015d0b637df748ffb3e16cef71fe71c0/FLAG61de6718a [2024-10-14 16:44:26,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58630b1f8/015d0b637df748ffb3e16cef71fe71c0 [2024-10-14 16:44:26,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:44:26,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:44:26,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:44:26,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:44:26,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:44:26,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:44:26" (1/1) ... [2024-10-14 16:44:26,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2869fdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:26, skipping insertion in model container [2024-10-14 16:44:26,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:44:26" (1/1) ... [2024-10-14 16:44:27,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:44:27,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:44:27,408 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:44:27,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:44:27,501 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:44:27,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27 WrapperNode [2024-10-14 16:44:27,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:44:27,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:44:27,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:44:27,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:44:27,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,545 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 87 [2024-10-14 16:44:27,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:44:27,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:44:27,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:44:27,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:44:27,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:44:27,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:44:27,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:44:27,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:44:27,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (1/1) ... [2024-10-14 16:44:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:44:27,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:44:27,631 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 16:44:27,638 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 16:44:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:44:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:44:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 16:44:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:44:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:44:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 16:44:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:44:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:44:27,686 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 16:44:27,933 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:44:27,935 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:44:28,095 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:44:28,095 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:44:28,196 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:44:28,197 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 16:44:28,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:44:28 BoogieIcfgContainer [2024-10-14 16:44:28,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:44:28,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:44:28,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:44:28,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:44:28,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:44:26" (1/3) ... [2024-10-14 16:44:28,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cea031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:44:28, skipping insertion in model container [2024-10-14 16:44:28,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:44:27" (2/3) ... [2024-10-14 16:44:28,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cea031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:44:28, skipping insertion in model container [2024-10-14 16:44:28,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:44:28" (3/3) ... [2024-10-14 16:44:28,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2024-10-14 16:44:28,224 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:44:28,224 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 16:44:28,224 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:44:28,279 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:28,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 114 flow [2024-10-14 16:44:28,358 INFO L124 PetriNetUnfolderBase]: 3/64 cut-off events. [2024-10-14 16:44:28,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:28,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 3/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2024-10-14 16:44:28,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 114 flow [2024-10-14 16:44:28,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 114 flow [2024-10-14 16:44:28,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:28,386 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;@3ee98ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:28,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 16:44:28,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:28,396 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-14 16:44:28,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:28,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:28,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:28,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 16:44:28,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1769426396, now seen corresponding path program 1 times [2024-10-14 16:44:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235398837] [2024-10-14 16:44:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:28,595 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 16:44:28,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:28,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235398837] [2024-10-14 16:44:28,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235398837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:28,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:28,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006021673] [2024-10-14 16:44:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:28,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:28,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 55 [2024-10-14 16:44:28,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 114 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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 16:44:28,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 55 [2024-10-14 16:44:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:28,685 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-10-14 16:44:28,686 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:44:28,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 6/49 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2024-10-14 16:44:28,688 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 5 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-10-14 16:44:28,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 100 flow [2024-10-14 16:44:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 96 transitions. [2024-10-14 16:44:28,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8727272727272727 [2024-10-14 16:44:28,703 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 114 flow. Second operand 2 states and 96 transitions. [2024-10-14 16:44:28,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 100 flow [2024-10-14 16:44:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:28,710 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 90 flow [2024-10-14 16:44:28,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-14 16:44:28,717 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2024-10-14 16:44:28,718 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 90 flow [2024-10-14 16:44:28,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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 16:44:28,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:28,721 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] [2024-10-14 16:44:28,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:44:28,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 16:44:28,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 388293319, now seen corresponding path program 1 times [2024-10-14 16:44:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298655588] [2024-10-14 16:44:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:28,827 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 16:44:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:28,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298655588] [2024-10-14 16:44:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298655588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743764938] [2024-10-14 16:44:28,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:28,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:28,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:28,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 55 [2024-10-14 16:44:28,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 16:44:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 55 [2024-10-14 16:44:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:28,883 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-10-14 16:44:28,884 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:44:28,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 45 events. 1/45 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2024-10-14 16:44:28,884 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 7 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-10-14 16:44:28,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 106 flow [2024-10-14 16:44:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-14 16:44:28,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-10-14 16:44:28,887 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 90 flow. Second operand 3 states and 114 transitions. [2024-10-14 16:44:28,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 106 flow [2024-10-14 16:44:28,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:28,892 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 92 flow [2024-10-14 16:44:28,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-10-14 16:44:28,894 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2024-10-14 16:44:28,894 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 92 flow [2024-10-14 16:44:28,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 16:44:28,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:28,894 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 16:44:28,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:44:28,896 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 16:44:28,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1788807122, now seen corresponding path program 1 times [2024-10-14 16:44:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576128731] [2024-10-14 16:44:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:28,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:28,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:28,958 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:28,959 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-14 16:44:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-14 16:44:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-14 16:44:28,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-14 16:44:28,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-14 16:44:28,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-14 16:44:28,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-14 16:44:28,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-14 16:44:28,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-14 16:44:28,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-14 16:44:28,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-14 16:44:28,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-14 16:44:28,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-14 16:44:28,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-14 16:44:28,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-14 16:44:28,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-14 16:44:28,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-14 16:44:28,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-14 16:44:28,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-14 16:44:28,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-14 16:44:28,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-14 16:44:28,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:44:28,967 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 16:44:28,971 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:28,971 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:44:29,013 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:29,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 184 flow [2024-10-14 16:44:29,040 INFO L124 PetriNetUnfolderBase]: 5/107 cut-off events. [2024-10-14 16:44:29,040 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:44:29,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 107 events. 5/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 249 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2024-10-14 16:44:29,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 184 flow [2024-10-14 16:44:29,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 87 transitions, 184 flow [2024-10-14 16:44:29,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:29,046 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;@3ee98ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:29,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-14 16:44:29,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:29,051 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-14 16:44:29,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:29,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:29,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-14 16:44:29,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 911408219, now seen corresponding path program 1 times [2024-10-14 16:44:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459806825] [2024-10-14 16:44:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:29,082 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 16:44:29,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:29,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459806825] [2024-10-14 16:44:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459806825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:29,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:29,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156961747] [2024-10-14 16:44:29,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:29,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:29,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 87 [2024-10-14 16:44:29,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 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 16:44:29,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:29,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 87 [2024-10-14 16:44:29,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:29,200 INFO L124 PetriNetUnfolderBase]: 26/198 cut-off events. [2024-10-14 16:44:29,203 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 16:44:29,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 198 events. 26/198 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 762 event pairs, 20 based on Foata normal form. 31/199 useless extension candidates. Maximal degree in co-relation 188. Up to 51 conditions per place. [2024-10-14 16:44:29,206 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 10 selfloop transitions, 0 changer transitions 0/68 dead transitions. [2024-10-14 16:44:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 166 flow [2024-10-14 16:44:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 148 transitions. [2024-10-14 16:44:29,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2024-10-14 16:44:29,210 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 184 flow. Second operand 2 states and 148 transitions. [2024-10-14 16:44:29,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 166 flow [2024-10-14 16:44:29,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:29,214 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 146 flow [2024-10-14 16:44:29,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=146, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-10-14 16:44:29,216 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2024-10-14 16:44:29,216 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 146 flow [2024-10-14 16:44:29,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 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 16:44:29,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,217 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] [2024-10-14 16:44:29,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:44:29,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-14 16:44:29,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash -310015490, now seen corresponding path program 1 times [2024-10-14 16:44:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208656731] [2024-10-14 16:44:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:29,274 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 16:44:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208656731] [2024-10-14 16:44:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208656731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:29,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:29,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738151025] [2024-10-14 16:44:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:29,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:29,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 87 [2024-10-14 16:44:29,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:44:29,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:29,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 87 [2024-10-14 16:44:29,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:29,448 INFO L124 PetriNetUnfolderBase]: 128/487 cut-off events. [2024-10-14 16:44:29,448 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-14 16:44:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 487 events. 128/487 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2669 event pairs, 48 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 779. Up to 184 conditions per place. [2024-10-14 16:44:29,456 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 31 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2024-10-14 16:44:29,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 275 flow [2024-10-14 16:44:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-10-14 16:44:29,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7203065134099617 [2024-10-14 16:44:29,460 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 146 flow. Second operand 3 states and 188 transitions. [2024-10-14 16:44:29,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 275 flow [2024-10-14 16:44:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:29,463 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 250 flow [2024-10-14 16:44:29,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-10-14 16:44:29,464 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -13 predicate places. [2024-10-14 16:44:29,465 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 250 flow [2024-10-14 16:44:29,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:44:29,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:29,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:44:29,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-14 16:44:29,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1750414311, now seen corresponding path program 1 times [2024-10-14 16:44:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190197531] [2024-10-14 16:44:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:29,523 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 16:44:29,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:29,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190197531] [2024-10-14 16:44:29,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190197531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:29,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507214373] [2024-10-14 16:44:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:29,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:29,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2024-10-14 16:44:29,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:29,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:29,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2024-10-14 16:44:29,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:29,674 INFO L124 PetriNetUnfolderBase]: 164/573 cut-off events. [2024-10-14 16:44:29,675 INFO L125 PetriNetUnfolderBase]: For 222/230 co-relation queries the response was YES. [2024-10-14 16:44:29,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 573 events. 164/573 cut-off events. For 222/230 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3288 event pairs, 73 based on Foata normal form. 5/517 useless extension candidates. Maximal degree in co-relation 1184. Up to 259 conditions per place. [2024-10-14 16:44:29,682 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 30 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-10-14 16:44:29,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 379 flow [2024-10-14 16:44:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-10-14 16:44:29,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7049808429118773 [2024-10-14 16:44:29,684 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 250 flow. Second operand 3 states and 184 transitions. [2024-10-14 16:44:29,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 379 flow [2024-10-14 16:44:29,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 16:44:29,693 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 312 flow [2024-10-14 16:44:29,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-10-14 16:44:29,696 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -11 predicate places. [2024-10-14 16:44:29,697 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 312 flow [2024-10-14 16:44:29,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:44:29,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,697 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 16:44:29,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:44:29,699 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-14 16:44:29,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -137112794, now seen corresponding path program 1 times [2024-10-14 16:44:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165268089] [2024-10-14 16:44:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:29,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:29,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:29,726 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:29,726 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-10-14 16:44:29,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-10-14 16:44:29,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-10-14 16:44:29,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-10-14 16:44:29,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-10-14 16:44:29,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-10-14 16:44:29,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-10-14 16:44:29,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-10-14 16:44:29,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-10-14 16:44:29,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-10-14 16:44:29,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-10-14 16:44:29,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-10-14 16:44:29,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-10-14 16:44:29,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-10-14 16:44:29,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-10-14 16:44:29,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-10-14 16:44:29,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-10-14 16:44:29,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-10-14 16:44:29,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-10-14 16:44:29,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-10-14 16:44:29,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-10-14 16:44:29,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-10-14 16:44:29,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-10-14 16:44:29,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-10-14 16:44:29,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-10-14 16:44:29,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:44:29,735 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 16:44:29,736 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:29,736 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:44:29,776 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 119 transitions, 256 flow [2024-10-14 16:44:29,797 INFO L124 PetriNetUnfolderBase]: 7/150 cut-off events. [2024-10-14 16:44:29,797 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:44:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 7/150 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 418 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2024-10-14 16:44:29,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 119 transitions, 256 flow [2024-10-14 16:44:29,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 119 transitions, 256 flow [2024-10-14 16:44:29,802 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:29,802 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;@3ee98ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:29,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-14 16:44:29,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:29,809 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-14 16:44:29,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:29,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:29,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-14 16:44:29,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash 579152499, now seen corresponding path program 1 times [2024-10-14 16:44:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331142174] [2024-10-14 16:44:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:29,839 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 16:44:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:29,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331142174] [2024-10-14 16:44:29,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331142174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:29,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:29,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096950653] [2024-10-14 16:44:29,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:29,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:29,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:29,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 119 [2024-10-14 16:44:29,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 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 16:44:29,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:29,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 119 [2024-10-14 16:44:29,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:29,971 INFO L124 PetriNetUnfolderBase]: 247/989 cut-off events. [2024-10-14 16:44:29,972 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-14 16:44:29,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 989 events. 247/989 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7088 event pairs, 220 based on Foata normal form. 156/990 useless extension candidates. Maximal degree in co-relation 1070. Up to 376 conditions per place. [2024-10-14 16:44:29,983 INFO L140 encePairwiseOnDemand]: 96/119 looper letters, 15 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2024-10-14 16:44:29,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 234 flow [2024-10-14 16:44:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 200 transitions. [2024-10-14 16:44:29,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2024-10-14 16:44:29,985 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 256 flow. Second operand 2 states and 200 transitions. [2024-10-14 16:44:29,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 234 flow [2024-10-14 16:44:29,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 232 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:29,988 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 202 flow [2024-10-14 16:44:29,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-10-14 16:44:29,991 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-10-14 16:44:29,991 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 202 flow [2024-10-14 16:44:29,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 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 16:44:29,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:29,991 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] [2024-10-14 16:44:29,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:44:29,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-14 16:44:29,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1780178698, now seen corresponding path program 1 times [2024-10-14 16:44:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890138174] [2024-10-14 16:44:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:30,031 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 16:44:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:30,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890138174] [2024-10-14 16:44:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890138174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:30,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:30,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:30,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889709261] [2024-10-14 16:44:30,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:30,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:30,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 119 [2024-10-14 16:44:30,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 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 16:44:30,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:30,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 119 [2024-10-14 16:44:30,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:30,970 INFO L124 PetriNetUnfolderBase]: 3439/7937 cut-off events. [2024-10-14 16:44:30,971 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-10-14 16:44:30,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13711 conditions, 7937 events. 3439/7937 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 72643 event pairs, 1298 based on Foata normal form. 0/7055 useless extension candidates. Maximal degree in co-relation 13705. Up to 3764 conditions per place. [2024-10-14 16:44:31,043 INFO L140 encePairwiseOnDemand]: 95/119 looper letters, 47 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-10-14 16:44:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 122 transitions, 400 flow [2024-10-14 16:44:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2024-10-14 16:44:31,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7030812324929971 [2024-10-14 16:44:31,045 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 202 flow. Second operand 3 states and 251 transitions. [2024-10-14 16:44:31,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 122 transitions, 400 flow [2024-10-14 16:44:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:31,048 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 358 flow [2024-10-14 16:44:31,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2024-10-14 16:44:31,050 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -20 predicate places. [2024-10-14 16:44:31,050 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 358 flow [2024-10-14 16:44:31,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 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 16:44:31,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:31,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:31,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:44:31,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-14 16:44:31,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2014363231, now seen corresponding path program 1 times [2024-10-14 16:44:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443535369] [2024-10-14 16:44:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:31,150 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 16:44:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443535369] [2024-10-14 16:44:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443535369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:31,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:31,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:31,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501064816] [2024-10-14 16:44:31,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:31,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:31,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 119 [2024-10-14 16:44:31,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 16:44:31,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:31,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 119 [2024-10-14 16:44:31,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:32,442 INFO L124 PetriNetUnfolderBase]: 4459/10346 cut-off events. [2024-10-14 16:44:32,442 INFO L125 PetriNetUnfolderBase]: For 4808/5119 co-relation queries the response was YES. [2024-10-14 16:44:32,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23022 conditions, 10346 events. 4459/10346 cut-off events. For 4808/5119 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 99086 event pairs, 2185 based on Foata normal form. 65/9126 useless extension candidates. Maximal degree in co-relation 23014. Up to 5397 conditions per place. [2024-10-14 16:44:32,532 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 46 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-10-14 16:44:32,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 600 flow [2024-10-14 16:44:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2024-10-14 16:44:32,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7030812324929971 [2024-10-14 16:44:32,596 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 358 flow. Second operand 3 states and 251 transitions. [2024-10-14 16:44:32,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 600 flow [2024-10-14 16:44:32,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 137 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 16:44:32,619 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 508 flow [2024-10-14 16:44:32,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-10-14 16:44:32,620 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2024-10-14 16:44:32,620 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 508 flow [2024-10-14 16:44:32,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 16:44:32,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:32,621 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:32,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:44:32,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-14 16:44:32,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash -112455737, now seen corresponding path program 1 times [2024-10-14 16:44:32,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:32,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825630138] [2024-10-14 16:44:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:44:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825630138] [2024-10-14 16:44:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825630138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134846597] [2024-10-14 16:44:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:32,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:32,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 119 [2024-10-14 16:44:32,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 16:44:32,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:32,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 119 [2024-10-14 16:44:32,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:34,184 INFO L124 PetriNetUnfolderBase]: 5887/12869 cut-off events. [2024-10-14 16:44:34,184 INFO L125 PetriNetUnfolderBase]: For 10651/11284 co-relation queries the response was YES. [2024-10-14 16:44:34,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31991 conditions, 12869 events. 5887/12869 cut-off events. For 10651/11284 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 122174 event pairs, 2461 based on Foata normal form. 93/11098 useless extension candidates. Maximal degree in co-relation 31982. Up to 6949 conditions per place. [2024-10-14 16:44:34,295 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 59 selfloop transitions, 28 changer transitions 0/160 dead transitions. [2024-10-14 16:44:34,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 160 transitions, 841 flow [2024-10-14 16:44:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2024-10-14 16:44:34,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7002801120448179 [2024-10-14 16:44:34,298 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 508 flow. Second operand 3 states and 250 transitions. [2024-10-14 16:44:34,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 160 transitions, 841 flow [2024-10-14 16:44:34,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 160 transitions, 785 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 16:44:34,346 INFO L231 Difference]: Finished difference. Result has 106 places, 153 transitions, 754 flow [2024-10-14 16:44:34,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=754, PETRI_PLACES=106, PETRI_TRANSITIONS=153} [2024-10-14 16:44:34,347 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-10-14 16:44:34,347 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 153 transitions, 754 flow [2024-10-14 16:44:34,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 16:44:34,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:34,347 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 16:44:34,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:44:34,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-14 16:44:34,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1812804421, now seen corresponding path program 1 times [2024-10-14 16:44:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629621147] [2024-10-14 16:44:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:44:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:44:34,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:44:34,375 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:44:34,375 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-10-14 16:44:34,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2024-10-14 16:44:34,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2024-10-14 16:44:34,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2024-10-14 16:44:34,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2024-10-14 16:44:34,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2024-10-14 16:44:34,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2024-10-14 16:44:34,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2024-10-14 16:44:34,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2024-10-14 16:44:34,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2024-10-14 16:44:34,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2024-10-14 16:44:34,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2024-10-14 16:44:34,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2024-10-14 16:44:34,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2024-10-14 16:44:34,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:44:34,382 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-14 16:44:34,382 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:44:34,382 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:44:34,424 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:44:34,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 151 transitions, 330 flow [2024-10-14 16:44:34,443 INFO L124 PetriNetUnfolderBase]: 9/193 cut-off events. [2024-10-14 16:44:34,444 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:44:34,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 193 events. 9/193 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 591 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 158. Up to 10 conditions per place. [2024-10-14 16:44:34,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 151 transitions, 330 flow [2024-10-14 16:44:34,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 151 transitions, 330 flow [2024-10-14 16:44:34,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:44:34,450 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;@3ee98ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:44:34,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-10-14 16:44:34,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:44:34,453 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-14 16:44:34,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:44:34,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:34,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:44:34,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2024-10-14 16:44:34,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1528835306, now seen corresponding path program 1 times [2024-10-14 16:44:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969318440] [2024-10-14 16:44:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:34,472 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 16:44:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969318440] [2024-10-14 16:44:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969318440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:34,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:44:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091137695] [2024-10-14 16:44:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:34,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:44:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:44:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:44:34,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 151 [2024-10-14 16:44:34,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 151 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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 16:44:34,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:34,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 151 [2024-10-14 16:44:34,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:35,163 INFO L124 PetriNetUnfolderBase]: 1848/5380 cut-off events. [2024-10-14 16:44:35,163 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-10-14 16:44:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 5380 events. 1848/5380 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 51569 event pairs, 1720 based on Foata normal form. 781/5387 useless extension candidates. Maximal degree in co-relation 6272. Up to 2501 conditions per place. [2024-10-14 16:44:35,228 INFO L140 encePairwiseOnDemand]: 121/151 looper letters, 20 selfloop transitions, 0 changer transitions 0/118 dead transitions. [2024-10-14 16:44:35,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 118 transitions, 304 flow [2024-10-14 16:44:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:44:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:44:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2024-10-14 16:44:35,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8344370860927153 [2024-10-14 16:44:35,230 INFO L175 Difference]: Start difference. First operand has 155 places, 151 transitions, 330 flow. Second operand 2 states and 252 transitions. [2024-10-14 16:44:35,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 118 transitions, 304 flow [2024-10-14 16:44:35,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 298 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:35,234 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 258 flow [2024-10-14 16:44:35,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-10-14 16:44:35,236 INFO L277 CegarLoopForPetriNet]: 155 programPoint places, -31 predicate places. [2024-10-14 16:44:35,236 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 258 flow [2024-10-14 16:44:35,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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 16:44:35,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:35,237 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] [2024-10-14 16:44:35,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 16:44:35,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2024-10-14 16:44:35,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 331937901, now seen corresponding path program 1 times [2024-10-14 16:44:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286444879] [2024-10-14 16:44:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:35,265 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 16:44:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286444879] [2024-10-14 16:44:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286444879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:35,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68835774] [2024-10-14 16:44:35,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:35,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:35,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 151 [2024-10-14 16:44:35,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:44:35,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 151 [2024-10-14 16:44:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:44:46,292 INFO L124 PetriNetUnfolderBase]: 69719/128084 cut-off events. [2024-10-14 16:44:46,292 INFO L125 PetriNetUnfolderBase]: For 6259/6259 co-relation queries the response was YES. [2024-10-14 16:44:46,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230019 conditions, 128084 events. 69719/128084 cut-off events. For 6259/6259 co-relation queries the response was YES. Maximal size of possible extension queue 4977. Compared 1424828 event pairs, 26548 based on Foata normal form. 0/113759 useless extension candidates. Maximal degree in co-relation 230012. Up to 66562 conditions per place. [2024-10-14 16:44:47,620 INFO L140 encePairwiseOnDemand]: 119/151 looper letters, 63 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2024-10-14 16:44:47,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 157 transitions, 525 flow [2024-10-14 16:44:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:44:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:44:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-10-14 16:44:47,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6931567328918322 [2024-10-14 16:44:47,623 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 258 flow. Second operand 3 states and 314 transitions. [2024-10-14 16:44:47,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 157 transitions, 525 flow [2024-10-14 16:44:47,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 157 transitions, 525 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:44:47,632 INFO L231 Difference]: Finished difference. Result has 128 places, 142 transitions, 466 flow [2024-10-14 16:44:47,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=128, PETRI_TRANSITIONS=142} [2024-10-14 16:44:47,634 INFO L277 CegarLoopForPetriNet]: 155 programPoint places, -27 predicate places. [2024-10-14 16:44:47,634 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 142 transitions, 466 flow [2024-10-14 16:44:47,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 16:44:47,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:44:47,635 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, 1, 1, 1] [2024-10-14 16:44:47,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 16:44:47,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2024-10-14 16:44:47,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:44:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1238505002, now seen corresponding path program 1 times [2024-10-14 16:44:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:44:47,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062821137] [2024-10-14 16:44:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:44:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:44:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:44:47,676 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 16:44:47,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:44:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062821137] [2024-10-14 16:44:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062821137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:44:47,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:44:47,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:44:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812504911] [2024-10-14 16:44:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:44:47,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:44:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:44:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:44:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:44:47,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 151 [2024-10-14 16:44:47,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 142 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 16:44:47,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:44:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 151 [2024-10-14 16:44:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:03,280 INFO L124 PetriNetUnfolderBase]: 88759/169991 cut-off events. [2024-10-14 16:45:03,280 INFO L125 PetriNetUnfolderBase]: For 88573/94013 co-relation queries the response was YES. [2024-10-14 16:45:04,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396519 conditions, 169991 events. 88759/169991 cut-off events. For 88573/94013 co-relation queries the response was YES. Maximal size of possible extension queue 6352. Compared 2029608 event pairs, 45072 based on Foata normal form. 749/148527 useless extension candidates. Maximal degree in co-relation 396510. Up to 95746 conditions per place. [2024-10-14 16:45:05,375 INFO L140 encePairwiseOnDemand]: 135/151 looper letters, 62 selfloop transitions, 28 changer transitions 0/180 dead transitions. [2024-10-14 16:45:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 180 transitions, 809 flow [2024-10-14 16:45:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2024-10-14 16:45:05,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7019867549668874 [2024-10-14 16:45:05,377 INFO L175 Difference]: Start difference. First operand has 128 places, 142 transitions, 466 flow. Second operand 3 states and 318 transitions. [2024-10-14 16:45:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 180 transitions, 809 flow [2024-10-14 16:45:05,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 180 transitions, 737 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 16:45:05,837 INFO L231 Difference]: Finished difference. Result has 130 places, 168 transitions, 684 flow [2024-10-14 16:45:05,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=684, PETRI_PLACES=130, PETRI_TRANSITIONS=168} [2024-10-14 16:45:05,838 INFO L277 CegarLoopForPetriNet]: 155 programPoint places, -25 predicate places. [2024-10-14 16:45:05,838 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 168 transitions, 684 flow [2024-10-14 16:45:05,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 16:45:05,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:05,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:45:05,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 16:45:05,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2024-10-14 16:45:05,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1353443654, now seen corresponding path program 1 times [2024-10-14 16:45:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:05,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735431402] [2024-10-14 16:45:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735431402] [2024-10-14 16:45:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735431402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:05,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:05,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:45:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899512229] [2024-10-14 16:45:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:05,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:05,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 151 [2024-10-14 16:45:05,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 168 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 16:45:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 151 [2024-10-14 16:45:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:12,668 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([630] L717-1-->L718: Formula: (= |v_#race~value~0_1| 0) InVars {} OutVars{#race~value~0=|v_#race~value~0_1|} AuxVars[] AssignedVars[#race~value~0][74], [113#L718true, 154#true, 170#true, Black: 160#true, Black: 167#(= |#race~value~0| |thr1Thread1of4ForFork0_#t~nondet6#1|), 118#L724true, 152#true, 95#L733-6true, 158#true, 10#L719-1true, 150#true, 156#true, 90#L722-2true, 165#true]) [2024-10-14 16:45:12,669 INFO L294 olderBase$Statistics]: this new event has 70 ancestors and is cut-off event [2024-10-14 16:45:12,669 INFO L297 olderBase$Statistics]: existing Event has 70 ancestors and is cut-off event [2024-10-14 16:45:12,669 INFO L297 olderBase$Statistics]: existing Event has 70 ancestors and is cut-off event [2024-10-14 16:45:12,669 INFO L297 olderBase$Statistics]: existing Event has 70 ancestors and is cut-off event