./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:50:58,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:50:58,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:50:58,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:50:58,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:50:58,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:50:58,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:50:58,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:50:58,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:50:58,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:50:58,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:50:58,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:50:58,689 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:50:58,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:50:58,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:50:58,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:50:58,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:50:58,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:50:58,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:50:58,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:50:58,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:50:58,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:50:58,694 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:50:58,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:50:58,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:50:58,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:50:58,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:50:58,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:50:58,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:50:58,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:50:58,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:50:58,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:50:58,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:50:58,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:50:58,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:50:58,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:50:58,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:50:58,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:50:58,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:50:58,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:50:58,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:50:58,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a [2024-10-11 16:50:58,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:50:58,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:50:58,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:50:58,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:50:58,904 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:50:58,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2024-10-11 16:51:00,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:51:00,446 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:51:00,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2024-10-11 16:51:00,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/25648de90/0adc5749158b413ea8f9321eb144e7c2/FLAG4ade88ece [2024-10-11 16:51:00,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/25648de90/0adc5749158b413ea8f9321eb144e7c2 [2024-10-11 16:51:00,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:51:00,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:51:00,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:00,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:51:00,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:51:00,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:00,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f7318e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00, skipping insertion in model container [2024-10-11 16:51:00,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:00,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:51:00,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:00,797 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:51:00,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:00,924 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:51:00,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00 WrapperNode [2024-10-11 16:51:00,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:00,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:00,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:51:00,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:51:00,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:00,953 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:00,990 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2024-10-11 16:51:00,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:00,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:51:00,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:51:00,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:51:01,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:51:01,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:51:01,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:51:01,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:51:01,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (1/1) ... [2024-10-11 16:51:01,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:51:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:51:01,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:51:01,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:51:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:51:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 16:51:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:51:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:51:01,106 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 16:51:01,201 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:51:01,203 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:51:01,313 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:51:01,314 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:51:01,342 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:51:01,342 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 16:51:01,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:01 BoogieIcfgContainer [2024-10-11 16:51:01,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:51:01,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:51:01,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:51:01,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:51:01,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:51:00" (1/3) ... [2024-10-11 16:51:01,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa20cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:01, skipping insertion in model container [2024-10-11 16:51:01,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:00" (2/3) ... [2024-10-11 16:51:01,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa20cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:01, skipping insertion in model container [2024-10-11 16:51:01,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:01" (3/3) ... [2024-10-11 16:51:01,350 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-pthread.i [2024-10-11 16:51:01,362 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:51:01,362 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-11 16:51:01,362 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:51:01,395 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:01,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 152 flow [2024-10-11 16:51:01,446 INFO L124 PetriNetUnfolderBase]: 4/83 cut-off events. [2024-10-11 16:51:01,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:01,450 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. [2024-10-11 16:51:01,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 74 transitions, 152 flow [2024-10-11 16:51:01,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 74 transitions, 152 flow [2024-10-11 16:51:01,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:01,464 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;@364766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:01,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 16:51:01,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:01,473 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:51:01,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:01,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:01,474 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] [2024-10-11 16:51:01,474 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)] === [2024-10-11 16:51:01,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1729433259, now seen corresponding path program 1 times [2024-10-11 16:51:01,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:01,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82084574] [2024-10-11 16:51:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82084574] [2024-10-11 16:51:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82084574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306522821] [2024-10-11 16:51:01,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:01,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:01,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 74 [2024-10-11 16:51:01,685 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) [2024-10-11 16:51:01,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:01,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 74 [2024-10-11 16:51:01,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:01,726 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-10-11 16:51:01,726 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:01,727 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. [2024-10-11 16:51:01,728 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 5 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2024-10-11 16:51:01,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 146 flow [2024-10-11 16:51:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-10-11 16:51:01,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9324324324324325 [2024-10-11 16:51:01,747 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 152 flow. Second operand 2 states and 138 transitions. [2024-10-11 16:51:01,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 146 flow [2024-10-11 16:51:01,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:01,757 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 136 flow [2024-10-11 16:51:01,763 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} [2024-10-11 16:51:01,767 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2024-10-11 16:51:01,769 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 136 flow [2024-10-11 16:51:01,770 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) [2024-10-11 16:51:01,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:01,770 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] [2024-10-11 16:51:01,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:51:01,772 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)] === [2024-10-11 16:51:01,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1966308020, now seen corresponding path program 1 times [2024-10-11 16:51:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771591135] [2024-10-11 16:51:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:01,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:01,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:01,863 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:01,865 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-11 16:51:01,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-11 16:51:01,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-11 16:51:01,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-11 16:51:01,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-11 16:51:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-11 16:51:01,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-11 16:51:01,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:51:01,872 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:51:01,877 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:01,877 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:51:01,943 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:01,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 248 flow [2024-10-11 16:51:01,985 INFO L124 PetriNetUnfolderBase]: 7/139 cut-off events. [2024-10-11 16:51:01,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:51:01,987 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. [2024-10-11 16:51:01,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 119 transitions, 248 flow [2024-10-11 16:51:01,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 119 transitions, 248 flow [2024-10-11 16:51:01,996 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:01,996 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;@364766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:01,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 16:51:02,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:02,010 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:51:02,010 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:02,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:02,011 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] [2024-10-11 16:51:02,011 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)] === [2024-10-11 16:51:02,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1557202146, now seen corresponding path program 1 times [2024-10-11 16:51:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:02,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600664102] [2024-10-11 16:51:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:02,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600664102] [2024-10-11 16:51:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600664102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931122661] [2024-10-11 16:51:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:02,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:02,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:02,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 119 [2024-10-11 16:51:02,077 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) [2024-10-11 16:51:02,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:02,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 119 [2024-10-11 16:51:02,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:02,167 INFO L124 PetriNetUnfolderBase]: 27/340 cut-off events. [2024-10-11 16:51:02,168 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 16:51:02,170 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. [2024-10-11 16:51:02,171 INFO L140 encePairwiseOnDemand]: 111/119 looper letters, 10 selfloop transitions, 0 changer transitions 0/108 dead transitions. [2024-10-11 16:51:02,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 246 flow [2024-10-11 16:51:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2024-10-11 16:51:02,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9243697478991597 [2024-10-11 16:51:02,174 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 248 flow. Second operand 2 states and 220 transitions. [2024-10-11 16:51:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 246 flow [2024-10-11 16:51:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:02,176 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 226 flow [2024-10-11 16:51:02,177 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} [2024-10-11 16:51:02,177 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -7 predicate places. [2024-10-11 16:51:02,178 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 226 flow [2024-10-11 16:51:02,178 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) [2024-10-11 16:51:02,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:02,178 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] [2024-10-11 16:51:02,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:51:02,179 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)] === [2024-10-11 16:51:02,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -773671003, now seen corresponding path program 1 times [2024-10-11 16:51:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824838135] [2024-10-11 16:51:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:02,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824838135] [2024-10-11 16:51:02,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824838135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179923550] [2024-10-11 16:51:02,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:02,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:02,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:02,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2024-10-11 16:51:02,261 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) [2024-10-11 16:51:02,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:02,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2024-10-11 16:51:02,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:02,345 INFO L124 PetriNetUnfolderBase]: 64/528 cut-off events. [2024-10-11 16:51:02,346 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-11 16:51:02,348 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. [2024-10-11 16:51:02,350 INFO L140 encePairwiseOnDemand]: 109/119 looper letters, 21 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2024-10-11 16:51:02,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 315 flow [2024-10-11 16:51:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2024-10-11 16:51:02,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8851540616246498 [2024-10-11 16:51:02,355 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 226 flow. Second operand 3 states and 316 transitions. [2024-10-11 16:51:02,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 315 flow [2024-10-11 16:51:02,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:02,359 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 294 flow [2024-10-11 16:51:02,361 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} [2024-10-11 16:51:02,363 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2024-10-11 16:51:02,363 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 294 flow [2024-10-11 16:51:02,364 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) [2024-10-11 16:51:02,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:02,364 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] [2024-10-11 16:51:02,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:51:02,365 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)] === [2024-10-11 16:51:02,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:02,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1940273160, now seen corresponding path program 1 times [2024-10-11 16:51:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152852884] [2024-10-11 16:51:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:02,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:02,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:02,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:02,417 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:02,417 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-11 16:51:02,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-11 16:51:02,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-11 16:51:02,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-11 16:51:02,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-11 16:51:02,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-11 16:51:02,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-11 16:51:02,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-11 16:51:02,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-11 16:51:02,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-11 16:51:02,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:51:02,420 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 16:51:02,421 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:02,421 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:51:02,466 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 164 transitions, 346 flow [2024-10-11 16:51:02,493 INFO L124 PetriNetUnfolderBase]: 10/195 cut-off events. [2024-10-11 16:51:02,493 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:51:02,495 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. [2024-10-11 16:51:02,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 164 transitions, 346 flow [2024-10-11 16:51:02,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 164 transitions, 346 flow [2024-10-11 16:51:02,499 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:02,500 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;@364766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:02,501 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 16:51:02,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:02,506 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:51:02,506 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:02,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:02,506 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] [2024-10-11 16:51:02,507 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)] === [2024-10-11 16:51:02,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1852300506, now seen corresponding path program 1 times [2024-10-11 16:51:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322639622] [2024-10-11 16:51:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322639622] [2024-10-11 16:51:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322639622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:02,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:02,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928113541] [2024-10-11 16:51:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:02,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:02,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 164 [2024-10-11 16:51:02,537 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) [2024-10-11 16:51:02,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:02,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 164 [2024-10-11 16:51:02,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:02,749 INFO L124 PetriNetUnfolderBase]: 253/1798 cut-off events. [2024-10-11 16:51:02,749 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-11 16:51:02,755 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. [2024-10-11 16:51:02,762 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 15 selfloop transitions, 0 changer transitions 0/150 dead transitions. [2024-10-11 16:51:02,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 348 flow [2024-10-11 16:51:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 302 transitions. [2024-10-11 16:51:02,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9207317073170732 [2024-10-11 16:51:02,763 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 346 flow. Second operand 2 states and 302 transitions. [2024-10-11 16:51:02,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 348 flow [2024-10-11 16:51:02,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 150 transitions, 346 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:02,766 INFO L231 Difference]: Finished difference. Result has 155 places, 150 transitions, 316 flow [2024-10-11 16:51:02,767 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} [2024-10-11 16:51:02,767 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -9 predicate places. [2024-10-11 16:51:02,768 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 150 transitions, 316 flow [2024-10-11 16:51:02,768 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) [2024-10-11 16:51:02,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:02,768 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] [2024-10-11 16:51:02,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:51:02,768 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)] === [2024-10-11 16:51:02,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 204070045, now seen corresponding path program 1 times [2024-10-11 16:51:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191258550] [2024-10-11 16:51:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:02,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:02,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191258550] [2024-10-11 16:51:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191258550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:02,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247574648] [2024-10-11 16:51:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:02,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:02,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 164 [2024-10-11 16:51:02,825 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) [2024-10-11 16:51:02,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:02,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 164 [2024-10-11 16:51:02,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:03,400 INFO L124 PetriNetUnfolderBase]: 1172/5270 cut-off events. [2024-10-11 16:51:03,400 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-11 16:51:03,415 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. [2024-10-11 16:51:03,432 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 32 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2024-10-11 16:51:03,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 170 transitions, 454 flow [2024-10-11 16:51:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2024-10-11 16:51:03,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8821138211382114 [2024-10-11 16:51:03,434 INFO L175 Difference]: Start difference. First operand has 155 places, 150 transitions, 316 flow. Second operand 3 states and 434 transitions. [2024-10-11 16:51:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 170 transitions, 454 flow [2024-10-11 16:51:03,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 170 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:03,439 INFO L231 Difference]: Finished difference. Result has 159 places, 162 transitions, 418 flow [2024-10-11 16:51:03,439 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} [2024-10-11 16:51:03,440 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places. [2024-10-11 16:51:03,440 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 162 transitions, 418 flow [2024-10-11 16:51:03,440 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) [2024-10-11 16:51:03,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:03,441 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] [2024-10-11 16:51:03,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:51:03,441 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)] === [2024-10-11 16:51:03,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1110078874, now seen corresponding path program 1 times [2024-10-11 16:51:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:03,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50983867] [2024-10-11 16:51:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:03,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:03,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:03,474 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:03,474 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-11 16:51:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-11 16:51:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-11 16:51:03,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:51:03,476 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 16:51:03,476 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:03,476 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:51:03,527 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 209 transitions, 446 flow [2024-10-11 16:51:03,552 INFO L124 PetriNetUnfolderBase]: 13/251 cut-off events. [2024-10-11 16:51:03,552 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:51:03,554 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. [2024-10-11 16:51:03,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 209 transitions, 446 flow [2024-10-11 16:51:03,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 209 transitions, 446 flow [2024-10-11 16:51:03,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:03,559 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;@364766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:03,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-11 16:51:03,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:03,565 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-10-11 16:51:03,565 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:03,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:03,565 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] [2024-10-11 16:51:03,565 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)] === [2024-10-11 16:51:03,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1714017771, now seen corresponding path program 1 times [2024-10-11 16:51:03,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:03,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180740888] [2024-10-11 16:51:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:03,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180740888] [2024-10-11 16:51:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180740888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254340129] [2024-10-11 16:51:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:03,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:03,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 209 [2024-10-11 16:51:03,594 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) [2024-10-11 16:51:03,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 209 [2024-10-11 16:51:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:04,930 INFO L124 PetriNetUnfolderBase]: 1859/9588 cut-off events. [2024-10-11 16:51:04,931 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-10-11 16:51:04,961 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. [2024-10-11 16:51:04,992 INFO L140 encePairwiseOnDemand]: 195/209 looper letters, 20 selfloop transitions, 0 changer transitions 0/192 dead transitions. [2024-10-11 16:51:04,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 192 transitions, 452 flow [2024-10-11 16:51:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2024-10-11 16:51:04,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9186602870813397 [2024-10-11 16:51:04,996 INFO L175 Difference]: Start difference. First operand has 209 places, 209 transitions, 446 flow. Second operand 2 states and 384 transitions. [2024-10-11 16:51:04,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 192 transitions, 452 flow [2024-10-11 16:51:04,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 192 transitions, 446 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:05,000 INFO L231 Difference]: Finished difference. Result has 198 places, 192 transitions, 406 flow [2024-10-11 16:51:05,001 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} [2024-10-11 16:51:05,001 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -11 predicate places. [2024-10-11 16:51:05,002 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 192 transitions, 406 flow [2024-10-11 16:51:05,002 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) [2024-10-11 16:51:05,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:05,002 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] [2024-10-11 16:51:05,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 16:51:05,003 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)] === [2024-10-11 16:51:05,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash -240272274, now seen corresponding path program 1 times [2024-10-11 16:51:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:05,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460796139] [2024-10-11 16:51:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460796139] [2024-10-11 16:51:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460796139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237041678] [2024-10-11 16:51:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:05,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:05,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 209 [2024-10-11 16:51:05,059 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) [2024-10-11 16:51:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 209 [2024-10-11 16:51:05,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:10,131 INFO L124 PetriNetUnfolderBase]: 15875/52826 cut-off events. [2024-10-11 16:51:10,132 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-10-11 16:51:10,626 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. [2024-10-11 16:51:10,866 INFO L140 encePairwiseOnDemand]: 189/209 looper letters, 43 selfloop transitions, 16 changer transitions 0/219 dead transitions. [2024-10-11 16:51:10,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 219 transitions, 593 flow [2024-10-11 16:51:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2024-10-11 16:51:10,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803827751196173 [2024-10-11 16:51:10,869 INFO L175 Difference]: Start difference. First operand has 198 places, 192 transitions, 406 flow. Second operand 3 states and 552 transitions. [2024-10-11 16:51:10,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 219 transitions, 593 flow [2024-10-11 16:51:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 219 transitions, 593 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:10,874 INFO L231 Difference]: Finished difference. Result has 202 places, 208 transitions, 542 flow [2024-10-11 16:51:10,874 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} [2024-10-11 16:51:10,875 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2024-10-11 16:51:10,875 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 208 transitions, 542 flow [2024-10-11 16:51:10,876 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) [2024-10-11 16:51:10,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:10,876 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] [2024-10-11 16:51:10,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:51:10,876 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)] === [2024-10-11 16:51:10,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1170022001, now seen corresponding path program 1 times [2024-10-11 16:51:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443967624] [2024-10-11 16:51:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:10,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:10,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:10,913 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:10,913 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-11 16:51:10,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-11 16:51:10,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-11 16:51:10,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-11 16:51:10,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-11 16:51:10,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 16:51:10,916 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 16:51:10,917 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:10,917 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 16:51:10,967 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:10,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 254 transitions, 548 flow [2024-10-11 16:51:11,010 INFO L124 PetriNetUnfolderBase]: 16/307 cut-off events. [2024-10-11 16:51:11,010 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:51:11,013 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. [2024-10-11 16:51:11,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 254 transitions, 548 flow [2024-10-11 16:51:11,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 254 transitions, 548 flow [2024-10-11 16:51:11,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:11,018 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;@364766f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:11,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-11 16:51:11,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:11,022 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:51:11,022 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:11,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:11,022 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] [2024-10-11 16:51:11,023 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)] === [2024-10-11 16:51:11,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 345936145, now seen corresponding path program 1 times [2024-10-11 16:51:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588244842] [2024-10-11 16:51:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588244842] [2024-10-11 16:51:11,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588244842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:11,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41021721] [2024-10-11 16:51:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:11,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:11,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 254 [2024-10-11 16:51:11,051 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) [2024-10-11 16:51:11,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:11,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 254 [2024-10-11 16:51:11,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:17,492 INFO L124 PetriNetUnfolderBase]: 12349/51262 cut-off events. [2024-10-11 16:51:17,492 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-10-11 16:51:17,865 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. [2024-10-11 16:51:18,132 INFO L140 encePairwiseOnDemand]: 237/254 looper letters, 25 selfloop transitions, 0 changer transitions 0/234 dead transitions. [2024-10-11 16:51:18,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 234 transitions, 558 flow [2024-10-11 16:51:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 466 transitions. [2024-10-11 16:51:18,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9173228346456693 [2024-10-11 16:51:18,138 INFO L175 Difference]: Start difference. First operand has 254 places, 254 transitions, 548 flow. Second operand 2 states and 466 transitions. [2024-10-11 16:51:18,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 234 transitions, 558 flow [2024-10-11 16:51:18,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 234 transitions, 546 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:18,152 INFO L231 Difference]: Finished difference. Result has 241 places, 234 transitions, 496 flow [2024-10-11 16:51:18,153 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} [2024-10-11 16:51:18,154 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -13 predicate places. [2024-10-11 16:51:18,154 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 234 transitions, 496 flow [2024-10-11 16:51:18,155 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) [2024-10-11 16:51:18,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:18,155 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] [2024-10-11 16:51:18,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:51:18,155 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)] === [2024-10-11 16:51:18,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1815668460, now seen corresponding path program 1 times [2024-10-11 16:51:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284509570] [2024-10-11 16:51:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:51:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:18,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284509570] [2024-10-11 16:51:18,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284509570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:18,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313880608] [2024-10-11 16:51:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:18,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:18,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 254 [2024-10-11 16:51:18,244 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) [2024-10-11 16:51:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 254 [2024-10-11 16:51:18,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand