./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:33:24,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:33:24,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:33:24,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:33:24,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:33:24,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:33:24,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:33:24,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:33:24,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:33:24,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:33:24,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:33:24,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:33:24,253 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:33:24,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:33:24,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:33:24,256 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:33:24,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:33:24,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:33:24,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:33:24,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:33:24,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:33:24,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:33:24,261 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:33:24,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:33:24,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:33:24,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:33:24,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:33:24,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:33:24,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:33:24,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:33:24,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:33:24,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:33:24,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:33:24,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:33:24,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:33:24,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:33:24,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:33:24,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:33:24,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:33:24,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:33:24,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:33:24,267 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2024-10-13 09:33:24,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:33:24,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:33:24,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:33:24,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:33:24,547 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:33:24,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-10-13 09:33:26,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:33:26,316 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:33:26,316 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-10-13 09:33:26,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbdcf0bba/1881f68762e74622aa9d55fab0e485bc/FLAG4b0853a2b [2024-10-13 09:33:26,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbdcf0bba/1881f68762e74622aa9d55fab0e485bc [2024-10-13 09:33:26,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:33:26,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:33:26,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:33:26,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:33:26,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:33:26,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b74163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26, skipping insertion in model container [2024-10-13 09:33:26,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:33:26,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:33:26,650 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:33:26,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:33:26,724 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:33:26,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26 WrapperNode [2024-10-13 09:33:26,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:33:26,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:33:26,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:33:26,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:33:26,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,761 INFO L138 Inliner]: procedures = 174, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 94 [2024-10-13 09:33:26,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:33:26,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:33:26,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:33:26,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:33:26,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:33:26,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:33:26,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:33:26,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:33:26,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (1/1) ... [2024-10-13 09:33:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:33:26,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:33:26,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:33:26,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 09:33:26,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 09:33:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:33:26,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:33:26,964 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:33:27,066 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:33:27,072 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:33:27,291 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:33:27,292 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:33:27,388 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:33:27,389 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 09:33:27,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:33:27 BoogieIcfgContainer [2024-10-13 09:33:27,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:33:27,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:33:27,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:33:27,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:33:27,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:33:26" (1/3) ... [2024-10-13 09:33:27,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72af0099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:33:27, skipping insertion in model container [2024-10-13 09:33:27,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:33:26" (2/3) ... [2024-10-13 09:33:27,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72af0099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:33:27, skipping insertion in model container [2024-10-13 09:33:27,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:33:27" (3/3) ... [2024-10-13 09:33:27,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-10-13 09:33:27,412 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:33:27,412 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-13 09:33:27,413 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:33:27,466 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:27,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 144 flow [2024-10-13 09:33:27,528 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2024-10-13 09:33:27,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:33:27,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 4/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-10-13 09:33:27,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 144 flow [2024-10-13 09:33:27,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 144 flow [2024-10-13 09:33:27,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:27,554 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;@3ceb483d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:27,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-13 09:33:27,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:27,567 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-13 09:33:27,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:33:27,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:27,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:27,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-13 09:33:27,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1469180269, now seen corresponding path program 1 times [2024-10-13 09:33:27,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:27,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340152183] [2024-10-13 09:33:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340152183] [2024-10-13 09:33:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340152183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813122809] [2024-10-13 09:33:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:27,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:27,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 70 [2024-10-13 09:33:27,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:27,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:27,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 70 [2024-10-13 09:33:27,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:27,805 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2024-10-13 09:33:27,805 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:27,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 62 events. 1/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 7/67 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-10-13 09:33:27,807 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 5 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-10-13 09:33:27,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 130 flow [2024-10-13 09:33:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 126 transitions. [2024-10-13 09:33:27,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9 [2024-10-13 09:33:27,823 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 144 flow. Second operand 2 states and 126 transitions. [2024-10-13 09:33:27,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 130 flow [2024-10-13 09:33:27,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:27,829 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 120 flow [2024-10-13 09:33:27,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-13 09:33:27,835 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2024-10-13 09:33:27,836 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 120 flow [2024-10-13 09:33:27,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:27,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:27,837 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:27,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:33:27,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-13 09:33:27,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2069930490, now seen corresponding path program 1 times [2024-10-13 09:33:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327298003] [2024-10-13 09:33:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:27,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:27,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:27,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:27,911 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:27,913 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-13 09:33:27,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-13 09:33:27,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-13 09:33:27,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-13 09:33:27,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-13 09:33:27,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-13 09:33:27,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-13 09:33:27,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-13 09:33:27,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-13 09:33:27,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:33:27,923 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 09:33:27,926 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:27,927 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:33:27,961 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:27,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 117 transitions, 244 flow [2024-10-13 09:33:28,002 INFO L124 PetriNetUnfolderBase]: 7/137 cut-off events. [2024-10-13 09:33:28,002 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:33:28,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-10-13 09:33:28,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 117 transitions, 244 flow [2024-10-13 09:33:28,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 117 transitions, 244 flow [2024-10-13 09:33:28,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:28,014 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;@3ceb483d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:28,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 09:33:28,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:28,019 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-13 09:33:28,019 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:28,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:28,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:28,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:33:28,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1586066434, now seen corresponding path program 1 times [2024-10-13 09:33:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110293775] [2024-10-13 09:33:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110293775] [2024-10-13 09:33:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110293775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:28,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865719772] [2024-10-13 09:33:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:28,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:28,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 117 [2024-10-13 09:33:28,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 244 flow. Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:28,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 117 [2024-10-13 09:33:28,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:28,144 INFO L124 PetriNetUnfolderBase]: 27/317 cut-off events. [2024-10-13 09:33:28,145 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-13 09:33:28,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 317 events. 27/317 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1178 event pairs, 20 based on Foata normal form. 40/341 useless extension candidates. Maximal degree in co-relation 296. Up to 51 conditions per place. [2024-10-13 09:33:28,148 INFO L140 encePairwiseOnDemand]: 101/117 looper letters, 10 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2024-10-13 09:33:28,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 226 flow [2024-10-13 09:33:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2024-10-13 09:33:28,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-10-13 09:33:28,155 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 244 flow. Second operand 2 states and 208 transitions. [2024-10-13 09:33:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 226 flow [2024-10-13 09:33:28,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:28,178 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 206 flow [2024-10-13 09:33:28,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-10-13 09:33:28,179 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, -15 predicate places. [2024-10-13 09:33:28,179 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 206 flow [2024-10-13 09:33:28,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:28,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:28,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:33:28,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:33:28,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1570389665, now seen corresponding path program 1 times [2024-10-13 09:33:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891317333] [2024-10-13 09:33:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891317333] [2024-10-13 09:33:28,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891317333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:28,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:28,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:28,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674495242] [2024-10-13 09:33:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:28,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:28,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:28,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 117 [2024-10-13 09:33:28,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:28,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 117 [2024-10-13 09:33:28,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:28,365 INFO L124 PetriNetUnfolderBase]: 64/496 cut-off events. [2024-10-13 09:33:28,366 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 09:33:28,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 496 events. 64/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2317 event pairs, 20 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 647. Up to 80 conditions per place. [2024-10-13 09:33:28,374 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 21 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2024-10-13 09:33:28,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 295 flow [2024-10-13 09:33:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2024-10-13 09:33:28,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-10-13 09:33:28,377 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 206 flow. Second operand 3 states and 286 transitions. [2024-10-13 09:33:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 111 transitions, 295 flow [2024-10-13 09:33:28,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 111 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:28,382 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 274 flow [2024-10-13 09:33:28,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-10-13 09:33:28,383 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, -11 predicate places. [2024-10-13 09:33:28,384 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 274 flow [2024-10-13 09:33:28,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:28,385 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:28,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:33:28,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:33:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1910211048, now seen corresponding path program 1 times [2024-10-13 09:33:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711853649] [2024-10-13 09:33:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:28,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:28,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:28,444 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:28,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-13 09:33:28,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-13 09:33:28,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-13 09:33:28,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-13 09:33:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-13 09:33:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-13 09:33:28,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-13 09:33:28,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:33:28,451 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:28,453 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:28,453 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:33:28,490 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:28,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:28,514 INFO L124 PetriNetUnfolderBase]: 10/195 cut-off events. [2024-10-13 09:33:28,514 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:33:28,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 10/195 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 485 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2024-10-13 09:33:28,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:28,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 164 transitions, 346 flow [2024-10-13 09:33:28,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:28,521 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;@3ceb483d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:28,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-13 09:33:28,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:28,528 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-13 09:33:28,528 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:28,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:28,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:28,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:33:28,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2075308856, now seen corresponding path program 1 times [2024-10-13 09:33:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:28,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263751185] [2024-10-13 09:33:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:28,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:28,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263751185] [2024-10-13 09:33:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263751185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:28,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:28,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360199685] [2024-10-13 09:33:28,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:28,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:28,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:28,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 164 [2024-10-13 09:33:28,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 164 transitions, 346 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:28,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 164 [2024-10-13 09:33:28,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:28,827 INFO L124 PetriNetUnfolderBase]: 253/1688 cut-off events. [2024-10-13 09:33:28,827 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-13 09:33:28,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 1688 events. 253/1688 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12768 event pairs, 220 based on Foata normal form. 218/1815 useless extension candidates. Maximal degree in co-relation 1658. Up to 376 conditions per place. [2024-10-13 09:33:28,844 INFO L140 encePairwiseOnDemand]: 141/164 looper letters, 15 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2024-10-13 09:33:28,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 324 flow [2024-10-13 09:33:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2024-10-13 09:33:28,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8841463414634146 [2024-10-13 09:33:28,847 INFO L175 Difference]: Start difference. First operand has 164 places, 164 transitions, 346 flow. Second operand 2 states and 290 transitions. [2024-10-13 09:33:28,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 324 flow [2024-10-13 09:33:28,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 138 transitions, 322 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:28,853 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 292 flow [2024-10-13 09:33:28,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-10-13 09:33:28,854 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -21 predicate places. [2024-10-13 09:33:28,855 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 292 flow [2024-10-13 09:33:28,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:28,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:28,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:33:28,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:33:28,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -527456305, now seen corresponding path program 1 times [2024-10-13 09:33:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214137436] [2024-10-13 09:33:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214137436] [2024-10-13 09:33:28,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214137436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:28,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069192386] [2024-10-13 09:33:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:28,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 164 [2024-10-13 09:33:28,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:28,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:28,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 164 [2024-10-13 09:33:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:29,569 INFO L124 PetriNetUnfolderBase]: 1172/5010 cut-off events. [2024-10-13 09:33:29,570 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-13 09:33:29,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7042 conditions, 5010 events. 1172/5010 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 47518 event pairs, 427 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 7036. Up to 1116 conditions per place. [2024-10-13 09:33:29,604 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 32 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2024-10-13 09:33:29,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 158 transitions, 430 flow [2024-10-13 09:33:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2024-10-13 09:33:29,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8089430894308943 [2024-10-13 09:33:29,606 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 292 flow. Second operand 3 states and 398 transitions. [2024-10-13 09:33:29,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 158 transitions, 430 flow [2024-10-13 09:33:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 158 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:29,610 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 394 flow [2024-10-13 09:33:29,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2024-10-13 09:33:29,611 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2024-10-13 09:33:29,612 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 394 flow [2024-10-13 09:33:29,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:29,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:29,612 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:29,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:33:29,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:33:29,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1337090110, now seen corresponding path program 1 times [2024-10-13 09:33:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291819313] [2024-10-13 09:33:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:29,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:29,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:29,651 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:29,651 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-13 09:33:29,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-13 09:33:29,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-13 09:33:29,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-13 09:33:29,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-13 09:33:29,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-13 09:33:29,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-13 09:33:29,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-13 09:33:29,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:33:29,657 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:29,660 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:29,660 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 09:33:29,703 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:29,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 211 transitions, 450 flow [2024-10-13 09:33:29,731 INFO L124 PetriNetUnfolderBase]: 13/253 cut-off events. [2024-10-13 09:33:29,731 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 09:33:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 253 events. 13/253 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 753 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 203. Up to 10 conditions per place. [2024-10-13 09:33:29,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 211 transitions, 450 flow [2024-10-13 09:33:29,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 211 transitions, 450 flow [2024-10-13 09:33:29,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:29,741 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;@3ceb483d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:29,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-13 09:33:29,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:29,744 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-10-13 09:33:29,744 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:29,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:29,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:29,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:33:29,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1409578219, now seen corresponding path program 1 times [2024-10-13 09:33:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:29,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164070554] [2024-10-13 09:33:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:29,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:29,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164070554] [2024-10-13 09:33:29,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164070554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:29,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47064608] [2024-10-13 09:33:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:29,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:29,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 211 [2024-10-13 09:33:29,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:29,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:29,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 211 [2024-10-13 09:33:29,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:30,989 INFO L124 PetriNetUnfolderBase]: 1859/9003 cut-off events. [2024-10-13 09:33:30,989 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-10-13 09:33:31,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12251 conditions, 9003 events. 1859/9003 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 97776 event pairs, 1720 based on Foata normal form. 1202/9736 useless extension candidates. Maximal degree in co-relation 9208. Up to 2501 conditions per place. [2024-10-13 09:33:31,065 INFO L140 encePairwiseOnDemand]: 181/211 looper letters, 20 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2024-10-13 09:33:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 178 transitions, 424 flow [2024-10-13 09:33:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 372 transitions. [2024-10-13 09:33:31,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8815165876777251 [2024-10-13 09:33:31,067 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 450 flow. Second operand 2 states and 372 transitions. [2024-10-13 09:33:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 178 transitions, 424 flow [2024-10-13 09:33:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 178 transitions, 418 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:31,070 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 378 flow [2024-10-13 09:33:31,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=378, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2024-10-13 09:33:31,071 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, -27 predicate places. [2024-10-13 09:33:31,071 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 378 flow [2024-10-13 09:33:31,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:31,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:31,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:31,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:33:31,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:33:31,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash 850364957, now seen corresponding path program 1 times [2024-10-13 09:33:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:31,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227928868] [2024-10-13 09:33:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:31,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227928868] [2024-10-13 09:33:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227928868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:31,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:31,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685877624] [2024-10-13 09:33:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:31,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:31,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 211 [2024-10-13 09:33:31,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:31,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:31,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 211 [2024-10-13 09:33:31,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:36,640 INFO L124 PetriNetUnfolderBase]: 15875/50469 cut-off events. [2024-10-13 09:33:36,641 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-10-13 09:33:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74286 conditions, 50469 events. 15875/50469 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 661210 event pairs, 6167 based on Foata normal form. 0/47621 useless extension candidates. Maximal degree in co-relation 74279. Up to 13336 conditions per place. [2024-10-13 09:33:37,176 INFO L140 encePairwiseOnDemand]: 191/211 looper letters, 43 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2024-10-13 09:33:37,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 205 transitions, 565 flow [2024-10-13 09:33:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:33:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:33:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2024-10-13 09:33:37,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8056872037914692 [2024-10-13 09:33:37,182 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 378 flow. Second operand 3 states and 510 transitions. [2024-10-13 09:33:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 205 transitions, 565 flow [2024-10-13 09:33:37,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 205 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:37,187 INFO L231 Difference]: Finished difference. Result has 188 places, 194 transitions, 514 flow [2024-10-13 09:33:37,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=188, PETRI_TRANSITIONS=194} [2024-10-13 09:33:37,189 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, -23 predicate places. [2024-10-13 09:33:37,189 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 194 transitions, 514 flow [2024-10-13 09:33:37,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:37,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:37,190 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:37,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:33:37,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:33:37,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1126513837, now seen corresponding path program 1 times [2024-10-13 09:33:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:37,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433784493] [2024-10-13 09:33:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:37,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:33:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:33:37,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:33:37,226 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-10-13 09:33:37,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-10-13 09:33:37,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-10-13 09:33:37,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-10-13 09:33:37,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-10-13 09:33:37,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-10-13 09:33:37,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-10-13 09:33:37,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-10-13 09:33:37,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-10-13 09:33:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-10-13 09:33:37,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-10-13 09:33:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-10-13 09:33:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-10-13 09:33:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-10-13 09:33:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-10-13 09:33:37,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-10-13 09:33:37,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:33:37,234 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:33:37,234 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:33:37,234 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 09:33:37,279 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:33:37,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 258 transitions, 556 flow [2024-10-13 09:33:37,318 INFO L124 PetriNetUnfolderBase]: 16/311 cut-off events. [2024-10-13 09:33:37,319 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:33:37,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 311 events. 16/311 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1029 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 266. Up to 12 conditions per place. [2024-10-13 09:33:37,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 258 transitions, 556 flow [2024-10-13 09:33:37,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 258 transitions, 556 flow [2024-10-13 09:33:37,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:33:37,327 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;@3ceb483d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:33:37,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-10-13 09:33:37,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:33:37,330 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-13 09:33:37,330 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:33:37,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:37,330 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:37,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-13 09:33:37,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1879868497, now seen corresponding path program 1 times [2024-10-13 09:33:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:37,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948657040] [2024-10-13 09:33:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:37,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:37,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:37,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948657040] [2024-10-13 09:33:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948657040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:37,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:33:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597504440] [2024-10-13 09:33:37,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:37,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:33:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:33:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:33:37,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 258 [2024-10-13 09:33:37,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 556 flow. Second operand has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:37,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:37,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 258 [2024-10-13 09:33:37,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:33:43,490 INFO L124 PetriNetUnfolderBase]: 12349/48214 cut-off events. [2024-10-13 09:33:43,491 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-10-13 09:33:43,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68338 conditions, 48214 events. 12349/48214 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 662952 event pairs, 11720 based on Foata normal form. 6714/52552 useless extension candidates. Maximal degree in co-relation 51110. Up to 15626 conditions per place. [2024-10-13 09:33:44,089 INFO L140 encePairwiseOnDemand]: 221/258 looper letters, 25 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2024-10-13 09:33:44,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 218 transitions, 526 flow [2024-10-13 09:33:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:33:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:33:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 454 transitions. [2024-10-13 09:33:44,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8798449612403101 [2024-10-13 09:33:44,091 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 556 flow. Second operand 2 states and 454 transitions. [2024-10-13 09:33:44,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 218 transitions, 526 flow [2024-10-13 09:33:44,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 514 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-13 09:33:44,097 INFO L231 Difference]: Finished difference. Result has 225 places, 218 transitions, 464 flow [2024-10-13 09:33:44,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=464, PETRI_PLACES=225, PETRI_TRANSITIONS=218} [2024-10-13 09:33:44,100 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, -33 predicate places. [2024-10-13 09:33:44,100 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 218 transitions, 464 flow [2024-10-13 09:33:44,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:44,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:33:44,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:33:44,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:33:44,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-13 09:33:44,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:33:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1084927819, now seen corresponding path program 1 times [2024-10-13 09:33:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:33:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499562619] [2024-10-13 09:33:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:33:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:33:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:33:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:33:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:33:44,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499562619] [2024-10-13 09:33:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499562619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:33:44,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:33:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:33:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036654961] [2024-10-13 09:33:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:33:44,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:33:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:33:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:33:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:33:44,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 258 [2024-10-13 09:33:44,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 218 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:33:44,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:33:44,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 258 [2024-10-13 09:33:44,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand