./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.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 dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:33:12,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:33:12,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:33:12,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:33:12,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:33:12,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:33:12,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:33:12,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:33:12,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:33:12,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:33:12,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:33:12,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:33:12,944 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:33:12,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:33:12,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:33:12,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:33:12,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:33:12,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:33:12,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:33:12,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:33:12,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:33:12,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:33:12,949 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:33:12,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:33:12,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:33:12,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:33:12,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:33:12,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:33:12,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:33:12,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:33:12,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:33:12,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:33:12,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:33:12,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:33:12,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:33:12,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:33:12,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:33:12,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:33:12,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:33:12,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:33:12,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:33:12,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a [2024-10-13 09:33:13,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:33:13,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:33:13,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:33:13,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:33:13,172 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:33:13,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2024-10-13 09:33:14,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:33:14,565 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:33:14,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2024-10-13 09:33:14,581 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e5073af/2234ecafb0f54abaa5ba6c39160a132c/FLAG895893ba9 [2024-10-13 09:33:14,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1e5073af/2234ecafb0f54abaa5ba6c39160a132c [2024-10-13 09:33:14,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:33:14,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:33:14,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:33:14,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:33:14,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:33:14,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:33:14" (1/1) ... [2024-10-13 09:33:14,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efbb736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:14, skipping insertion in model container [2024-10-13 09:33:14,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:33:14" (1/1) ... [2024-10-13 09:33:14,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:33:14,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:33:14,952 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:33:14,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:33:15,020 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:33:15,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15 WrapperNode [2024-10-13 09:33:15,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:33:15,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:33:15,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:33:15,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:33:15,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,064 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2024-10-13 09:33:15,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:33:15,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:33:15,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:33:15,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:33:15,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:33:15,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:33:15,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:33:15,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:33:15,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (1/1) ... [2024-10-13 09:33:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:33:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:33:15,113 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) [2024-10-13 09:33:15,116 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 [2024-10-13 09:33:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 09:33:15,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:33:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:33:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:33:15,151 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:33:15,237 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:33:15,238 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:33:15,366 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:33:15,366 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:33:15,399 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:33:15,399 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 09:33:15,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:33:15 BoogieIcfgContainer [2024-10-13 09:33:15,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:33:15,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:33:15,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:33:15,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:33:15,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:33:14" (1/3) ... [2024-10-13 09:33:15,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7958f3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:33:15, skipping insertion in model container [2024-10-13 09:33:15,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:15" (2/3) ... [2024-10-13 09:33:15,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7958f3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:33:15, skipping insertion in model container [2024-10-13 09:33:15,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:33:15" (3/3) ... [2024-10-13 09:33:15,411 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-pthread.i [2024-10-13 09:33:15,423 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:33:15,423 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-13 09:33:15,423 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:33:15,467 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:15,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 152 flow [2024-10-13 09:33:15,524 INFO L124 PetriNetUnfolderBase]: 4/83 cut-off events. [2024-10-13 09:33:15,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:33:15,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 4/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2024-10-13 09:33:15,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 74 transitions, 152 flow [2024-10-13 09:33:15,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 74 transitions, 152 flow [2024-10-13 09:33:15,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:15,546 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;@72b7922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:15,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 09:33:15,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:15,561 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-13 09:33:15,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:33:15,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:15,562 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] [2024-10-13 09:33:15,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 09:33:15,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1729433259, now seen corresponding path program 1 times [2024-10-13 09:33:15,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:15,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502900396] [2024-10-13 09:33:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502900396] [2024-10-13 09:33:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502900396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:15,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043677496] [2024-10-13 09:33:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:15,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 74 [2024-10-13 09:33:15,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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) [2024-10-13 09:33:15,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:15,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 74 [2024-10-13 09:33:15,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:15,845 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-10-13 09:33:15,845 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 7/75 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2024-10-13 09:33:15,847 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 5 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2024-10-13 09:33:15,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 146 flow [2024-10-13 09:33:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-10-13 09:33:15,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9324324324324325 [2024-10-13 09:33:15,859 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 152 flow. Second operand 2 states and 138 transitions. [2024-10-13 09:33:15,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 146 flow [2024-10-13 09:33:15,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:15,865 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 136 flow [2024-10-13 09:33:15,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-10-13 09:33:15,872 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2024-10-13 09:33:15,872 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 136 flow [2024-10-13 09:33:15,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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) [2024-10-13 09:33:15,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:15,873 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] [2024-10-13 09:33:15,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:33:15,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 09:33:15,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1966308020, now seen corresponding path program 1 times [2024-10-13 09:33:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:15,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198108292] [2024-10-13 09:33:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:15,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:15,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:15,931 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:15,932 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-13 09:33:15,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-13 09:33:15,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:33:15,935 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 09:33:15,938 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:15,938 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:33:15,976 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:15,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 248 flow [2024-10-13 09:33:16,005 INFO L124 PetriNetUnfolderBase]: 7/139 cut-off events. [2024-10-13 09:33:16,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:33:16,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 139 events. 7/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 203 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2024-10-13 09:33:16,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 119 transitions, 248 flow [2024-10-13 09:33:16,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 119 transitions, 248 flow [2024-10-13 09:33:16,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:16,010 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;@72b7922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:16,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 09:33:16,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:16,014 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-13 09:33:16,015 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:16,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:16,015 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] [2024-10-13 09:33:16,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-13 09:33:16,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1557202146, now seen corresponding path program 1 times [2024-10-13 09:33:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972327203] [2024-10-13 09:33:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:16,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:16,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972327203] [2024-10-13 09:33:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972327203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:16,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702636967] [2024-10-13 09:33:16,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:16,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:16,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 119 [2024-10-13 09:33:16,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 248 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) [2024-10-13 09:33:16,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:16,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 119 [2024-10-13 09:33:16,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:16,126 INFO L124 PetriNetUnfolderBase]: 27/340 cut-off events. [2024-10-13 09:33:16,126 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-13 09:33:16,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 340 events. 27/340 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1241 event pairs, 20 based on Foata normal form. 40/364 useless extension candidates. Maximal degree in co-relation 311. Up to 51 conditions per place. [2024-10-13 09:33:16,129 INFO L140 encePairwiseOnDemand]: 111/119 looper letters, 10 selfloop transitions, 0 changer transitions 0/108 dead transitions. [2024-10-13 09:33:16,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 246 flow [2024-10-13 09:33:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2024-10-13 09:33:16,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9243697478991597 [2024-10-13 09:33:16,134 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 248 flow. Second operand 2 states and 220 transitions. [2024-10-13 09:33:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 246 flow [2024-10-13 09:33:16,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:16,137 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 226 flow [2024-10-13 09:33:16,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=226, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-10-13 09:33:16,138 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -7 predicate places. [2024-10-13 09:33:16,138 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 226 flow [2024-10-13 09:33:16,139 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) [2024-10-13 09:33:16,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:16,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:16,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:33:16,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-13 09:33:16,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash -773671003, now seen corresponding path program 1 times [2024-10-13 09:33:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033502740] [2024-10-13 09:33:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:16,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033502740] [2024-10-13 09:33:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033502740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91217067] [2024-10-13 09:33:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:16,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:16,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2024-10-13 09:33:16,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2024-10-13 09:33:16,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:16,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2024-10-13 09:33:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:16,277 INFO L124 PetriNetUnfolderBase]: 64/528 cut-off events. [2024-10-13 09:33:16,278 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 09:33:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 528 events. 64/528 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2531 event pairs, 20 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 679. Up to 80 conditions per place. [2024-10-13 09:33:16,281 INFO L140 encePairwiseOnDemand]: 109/119 looper letters, 21 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2024-10-13 09:33:16,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 315 flow [2024-10-13 09:33:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2024-10-13 09:33:16,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8851540616246498 [2024-10-13 09:33:16,283 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 226 flow. Second operand 3 states and 316 transitions. [2024-10-13 09:33:16,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 315 flow [2024-10-13 09:33:16,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:16,286 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 294 flow [2024-10-13 09:33:16,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2024-10-13 09:33:16,287 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2024-10-13 09:33:16,287 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 294 flow [2024-10-13 09:33:16,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2024-10-13 09:33:16,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:16,288 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, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:16,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:33:16,288 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-13 09:33:16,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1940273160, now seen corresponding path program 1 times [2024-10-13 09:33:16,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910475686] [2024-10-13 09:33:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:16,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:16,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:16,320 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:16,320 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 09:33:16,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 09:33:16,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 09:33:16,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 09:33:16,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 09:33:16,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:33:16,323 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:16,326 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:16,326 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:33:16,359 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:16,382 INFO L124 PetriNetUnfolderBase]: 10/195 cut-off events. [2024-10-13 09:33:16,383 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:33:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 10/195 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 433 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2024-10-13 09:33:16,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:16,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:16,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:16,406 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;@72b7922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:16,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 09:33:16,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:16,411 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-13 09:33:16,411 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:16,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:16,411 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] [2024-10-13 09:33:16,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-10-13 09:33:16,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1852300506, now seen corresponding path program 1 times [2024-10-13 09:33:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095915574] [2024-10-13 09:33:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:16,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095915574] [2024-10-13 09:33:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095915574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:16,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151743543] [2024-10-13 09:33:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:16,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:16,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 164 [2024-10-13 09:33:16,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 346 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2024-10-13 09:33:16,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:16,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 164 [2024-10-13 09:33:16,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:16,638 INFO L124 PetriNetUnfolderBase]: 253/1798 cut-off events. [2024-10-13 09:33:16,638 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-13 09:33:16,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1798 events. 253/1798 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13811 event pairs, 220 based on Foata normal form. 217/1924 useless extension candidates. Maximal degree in co-relation 1745. Up to 376 conditions per place. [2024-10-13 09:33:16,654 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 15 selfloop transitions, 0 changer transitions 0/150 dead transitions. [2024-10-13 09:33:16,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 348 flow [2024-10-13 09:33:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 302 transitions. [2024-10-13 09:33:16,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9207317073170732 [2024-10-13 09:33:16,660 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 346 flow. Second operand 2 states and 302 transitions. [2024-10-13 09:33:16,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 348 flow [2024-10-13 09:33:16,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 150 transitions, 346 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:16,664 INFO L231 Difference]: Finished difference. Result has 155 places, 150 transitions, 316 flow [2024-10-13 09:33:16,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=316, PETRI_PLACES=155, PETRI_TRANSITIONS=150} [2024-10-13 09:33:16,666 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -9 predicate places. [2024-10-13 09:33:16,666 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 150 transitions, 316 flow [2024-10-13 09:33:16,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2024-10-13 09:33:16,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:16,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:33:16,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-10-13 09:33:16,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash 204070045, now seen corresponding path program 1 times [2024-10-13 09:33:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029034258] [2024-10-13 09:33:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:16,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:16,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029034258] [2024-10-13 09:33:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029034258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:16,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385447522] [2024-10-13 09:33:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:16,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:16,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 164 [2024-10-13 09:33:16,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 150 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2024-10-13 09:33:16,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:16,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 164 [2024-10-13 09:33:16,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:17,454 INFO L124 PetriNetUnfolderBase]: 1172/5270 cut-off events. [2024-10-13 09:33:17,456 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-13 09:33:17,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 5270 events. 1172/5270 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 51010 event pairs, 427 based on Foata normal form. 0/5016 useless extension candidates. Maximal degree in co-relation 7296. Up to 1116 conditions per place. [2024-10-13 09:33:17,484 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 32 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2024-10-13 09:33:17,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 170 transitions, 454 flow [2024-10-13 09:33:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2024-10-13 09:33:17,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8821138211382114 [2024-10-13 09:33:17,486 INFO L175 Difference]: Start difference. First operand has 155 places, 150 transitions, 316 flow. Second operand 3 states and 434 transitions. [2024-10-13 09:33:17,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 170 transitions, 454 flow [2024-10-13 09:33:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 170 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:17,491 INFO L231 Difference]: Finished difference. Result has 159 places, 162 transitions, 418 flow [2024-10-13 09:33:17,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=159, PETRI_TRANSITIONS=162} [2024-10-13 09:33:17,494 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places. [2024-10-13 09:33:17,494 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 162 transitions, 418 flow [2024-10-13 09:33:17,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2024-10-13 09:33:17,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:17,494 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, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:17,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:33:17,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-10-13 09:33:17,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1110078874, now seen corresponding path program 1 times [2024-10-13 09:33:17,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:17,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092888707] [2024-10-13 09:33:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:17,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:17,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:17,530 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:17,530 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-13 09:33:17,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-13 09:33:17,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-13 09:33:17,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-13 09:33:17,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-13 09:33:17,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-13 09:33:17,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:33:17,533 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:17,533 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:17,533 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 09:33:17,571 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:17,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 209 transitions, 446 flow [2024-10-13 09:33:17,601 INFO L124 PetriNetUnfolderBase]: 13/251 cut-off events. [2024-10-13 09:33:17,601 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 09:33:17,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 675 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 203. Up to 10 conditions per place. [2024-10-13 09:33:17,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 209 transitions, 446 flow [2024-10-13 09:33:17,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 209 transitions, 446 flow [2024-10-13 09:33:17,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:17,608 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;@72b7922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:17,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-13 09:33:17,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:17,612 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-10-13 09:33:17,612 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:17,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:17,613 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] [2024-10-13 09:33:17,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-13 09:33:17,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1714017771, now seen corresponding path program 1 times [2024-10-13 09:33:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313506455] [2024-10-13 09:33:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:17,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313506455] [2024-10-13 09:33:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313506455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433262381] [2024-10-13 09:33:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:17,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:17,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 209 [2024-10-13 09:33:17,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 209 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 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) [2024-10-13 09:33:17,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:17,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 209 [2024-10-13 09:33:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:18,991 INFO L124 PetriNetUnfolderBase]: 1859/9588 cut-off events. [2024-10-13 09:33:18,991 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-10-13 09:33:19,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12836 conditions, 9588 events. 1859/9588 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 106019 event pairs, 1720 based on Foata normal form. 1190/10309 useless extension candidates. Maximal degree in co-relation 9683. Up to 2501 conditions per place. [2024-10-13 09:33:19,067 INFO L140 encePairwiseOnDemand]: 195/209 looper letters, 20 selfloop transitions, 0 changer transitions 0/192 dead transitions. [2024-10-13 09:33:19,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 192 transitions, 452 flow [2024-10-13 09:33:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2024-10-13 09:33:19,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9186602870813397 [2024-10-13 09:33:19,070 INFO L175 Difference]: Start difference. First operand has 209 places, 209 transitions, 446 flow. Second operand 2 states and 384 transitions. [2024-10-13 09:33:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 192 transitions, 452 flow [2024-10-13 09:33:19,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 192 transitions, 446 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:19,074 INFO L231 Difference]: Finished difference. Result has 198 places, 192 transitions, 406 flow [2024-10-13 09:33:19,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=406, PETRI_PLACES=198, PETRI_TRANSITIONS=192} [2024-10-13 09:33:19,076 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -11 predicate places. [2024-10-13 09:33:19,076 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 192 transitions, 406 flow [2024-10-13 09:33:19,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 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) [2024-10-13 09:33:19,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:19,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:19,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:33:19,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-13 09:33:19,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -240272274, now seen corresponding path program 1 times [2024-10-13 09:33:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:19,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176949523] [2024-10-13 09:33:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176949523] [2024-10-13 09:33:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176949523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:19,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418459820] [2024-10-13 09:33:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:19,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:19,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:19,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 209 [2024-10-13 09:33:19,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 192 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2024-10-13 09:33:19,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:19,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 209 [2024-10-13 09:33:19,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:24,477 INFO L124 PetriNetUnfolderBase]: 15875/52826 cut-off events. [2024-10-13 09:33:24,477 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-10-13 09:33:24,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76643 conditions, 52826 events. 15875/52826 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 708278 event pairs, 6167 based on Foata normal form. 0/49991 useless extension candidates. Maximal degree in co-relation 76636. Up to 13336 conditions per place. [2024-10-13 09:33:25,151 INFO L140 encePairwiseOnDemand]: 189/209 looper letters, 43 selfloop transitions, 16 changer transitions 0/219 dead transitions. [2024-10-13 09:33:25,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 219 transitions, 593 flow [2024-10-13 09:33:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2024-10-13 09:33:25,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803827751196173 [2024-10-13 09:33:25,153 INFO L175 Difference]: Start difference. First operand has 198 places, 192 transitions, 406 flow. Second operand 3 states and 552 transitions. [2024-10-13 09:33:25,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 219 transitions, 593 flow [2024-10-13 09:33:25,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 219 transitions, 593 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:25,158 INFO L231 Difference]: Finished difference. Result has 202 places, 208 transitions, 542 flow [2024-10-13 09:33:25,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=202, PETRI_TRANSITIONS=208} [2024-10-13 09:33:25,159 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2024-10-13 09:33:25,159 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 208 transitions, 542 flow [2024-10-13 09:33:25,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2024-10-13 09:33:25,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:25,159 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:25,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:33:25,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-13 09:33:25,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1170022001, now seen corresponding path program 1 times [2024-10-13 09:33:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065974281] [2024-10-13 09:33:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:25,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:25,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:25,185 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-13 09:33:25,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-13 09:33:25,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-13 09:33:25,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:33:25,186 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:25,187 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:25,187 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 09:33:25,233 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:25,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 254 transitions, 548 flow [2024-10-13 09:33:25,267 INFO L124 PetriNetUnfolderBase]: 16/307 cut-off events. [2024-10-13 09:33:25,268 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:33:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 307 events. 16/307 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 944 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2024-10-13 09:33:25,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 254 transitions, 548 flow [2024-10-13 09:33:25,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 254 transitions, 548 flow [2024-10-13 09:33:25,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:25,277 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;@72b7922d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:25,278 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-13 09:33:25,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:25,280 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-13 09:33:25,280 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:25,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:25,280 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] [2024-10-13 09:33:25,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-10-13 09:33:25,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash 345936145, now seen corresponding path program 1 times [2024-10-13 09:33:25,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:25,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983674324] [2024-10-13 09:33:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:25,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983674324] [2024-10-13 09:33:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983674324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393335343] [2024-10-13 09:33:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:25,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:25,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 254 [2024-10-13 09:33:25,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 254 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 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) [2024-10-13 09:33:25,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:25,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 254 [2024-10-13 09:33:25,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:31,439 INFO L124 PetriNetUnfolderBase]: 12349/51262 cut-off events. [2024-10-13 09:33:31,439 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-10-13 09:33:31,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71386 conditions, 51262 events. 12349/51262 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 720751 event pairs, 11720 based on Foata normal form. 6632/55518 useless extension candidates. Maximal degree in co-relation 53573. Up to 15626 conditions per place. [2024-10-13 09:33:31,940 INFO L140 encePairwiseOnDemand]: 237/254 looper letters, 25 selfloop transitions, 0 changer transitions 0/234 dead transitions. [2024-10-13 09:33:31,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 234 transitions, 558 flow [2024-10-13 09:33:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 466 transitions. [2024-10-13 09:33:31,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9173228346456693 [2024-10-13 09:33:31,942 INFO L175 Difference]: Start difference. First operand has 254 places, 254 transitions, 548 flow. Second operand 2 states and 466 transitions. [2024-10-13 09:33:31,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 234 transitions, 558 flow [2024-10-13 09:33:31,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 234 transitions, 546 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:31,948 INFO L231 Difference]: Finished difference. Result has 241 places, 234 transitions, 496 flow [2024-10-13 09:33:31,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=496, PETRI_PLACES=241, PETRI_TRANSITIONS=234} [2024-10-13 09:33:31,951 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -13 predicate places. [2024-10-13 09:33:31,951 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 234 transitions, 496 flow [2024-10-13 09:33:31,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 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) [2024-10-13 09:33:31,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:31,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:31,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:33:31,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-10-13 09:33:31,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1815668460, now seen corresponding path program 1 times [2024-10-13 09:33:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430611185] [2024-10-13 09:33:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430611185] [2024-10-13 09:33:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430611185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252242075] [2024-10-13 09:33:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:31,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:32,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 254 [2024-10-13 09:33:32,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 234 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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) [2024-10-13 09:33:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 254 [2024-10-13 09:33:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand