./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/45_monabsex1_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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:32:54,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:32:54,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-19 05:32:54,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:32:54,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:32:54,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:32:54,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:32:54,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:32:54,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:32:54,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:32:54,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:32:54,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:32:54,872 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:32:54,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:32:54,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:32:54,873 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:32:54,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:32:54,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:32:54,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:32:54,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:32:54,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:32:54,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:32:54,875 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-19 05:32:54,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:32:54,875 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 05:32:54,876 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:32:54,876 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:32:54,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:32:54,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:32:54,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:32:54,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:32:54,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:32:54,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:32:54,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:32:54,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:32:54,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:32:54,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:32:54,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:32:54,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:32:54,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:32:54,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:32:54,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2024-11-19 05:32:55,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:32:55,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:32:55,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:32:55,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:32:55,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:32:55,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-19 05:32:56,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:32:56,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:32:56,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-19 05:32:56,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5b1a29f/7c274bb033934745a8cf47beadfbd276/FLAG8b1c5726d [2024-11-19 05:32:56,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5b1a29f/7c274bb033934745a8cf47beadfbd276 [2024-11-19 05:32:56,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:32:56,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:32:56,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:32:56,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:32:56,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:32:56,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:56" (1/1) ... [2024-11-19 05:32:56,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777036da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:56, skipping insertion in model container [2024-11-19 05:32:56,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:56" (1/1) ... [2024-11-19 05:32:57,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:32:57,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:32:57,334 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:32:57,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:32:57,421 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:32:57,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57 WrapperNode [2024-11-19 05:32:57,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:32:57,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:32:57,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:32:57,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:32:57,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,461 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2024-11-19 05:32:57,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:32:57,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:32:57,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:32:57,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:32:57,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:32:57,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:32:57,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:32:57,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:32:57,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (1/1) ... [2024-11-19 05:32:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:32:57,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:32:57,522 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) [2024-11-19 05:32:57,525 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 [2024-11-19 05:32:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 05:32:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 05:32:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 05:32:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:32:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 05:32:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 05:32:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:32:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:32:57,564 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 05:32:57,682 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:32:57,684 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:32:57,758 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 05:32:57,759 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:32:57,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:32:57,791 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 05:32:57,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:57 BoogieIcfgContainer [2024-11-19 05:32:57,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:32:57,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:32:57,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:32:57,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:32:57,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:32:56" (1/3) ... [2024-11-19 05:32:57,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac09bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:57, skipping insertion in model container [2024-11-19 05:32:57,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:57" (2/3) ... [2024-11-19 05:32:57,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac09bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:57, skipping insertion in model container [2024-11-19 05:32:57,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:57" (3/3) ... [2024-11-19 05:32:57,799 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2024-11-19 05:32:57,812 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:32:57,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-19 05:32:57,812 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 05:32:57,853 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 88 flow [2024-11-19 05:32:57,923 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2024-11-19 05:32:57,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:57,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 28. Up to 4 conditions per place. [2024-11-19 05:32:57,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 88 flow [2024-11-19 05:32:57,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions, 88 flow [2024-11-19 05:32:57,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:57,958 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:57,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 05:32:57,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:57,967 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:57,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:57,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:57,970 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:57,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 05:32:57,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1314474363, now seen corresponding path program 1 times [2024-11-19 05:32:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864237449] [2024-11-19 05:32:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:58,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864237449] [2024-11-19 05:32:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864237449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770919768] [2024-11-19 05:32:58,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:58,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:58,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:58,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:58,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 42 [2024-11-19 05:32:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-19 05:32:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:58,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 42 [2024-11-19 05:32:58,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:32:58,359 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-11-19 05:32:58,360 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 05:32:58,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2024-11-19 05:32:58,361 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 6 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-19 05:32:58,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 88 flow [2024-11-19 05:32:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:32:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:32:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-19 05:32:58,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2024-11-19 05:32:58,374 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 88 flow. Second operand 3 states and 97 transitions. [2024-11-19 05:32:58,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 88 flow [2024-11-19 05:32:58,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:32:58,379 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 76 flow [2024-11-19 05:32:58,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-19 05:32:58,384 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-19 05:32:58,384 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 76 flow [2024-11-19 05:32:58,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-19 05:32:58,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,384 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:32:58,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 05:32:58,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash 494862199, now seen corresponding path program 1 times [2024-11-19 05:32:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414893326] [2024-11-19 05:32:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:32:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:32:58,429 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:32:58,431 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 05:32:58,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2024-11-19 05:32:58,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2024-11-19 05:32:58,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2024-11-19 05:32:58,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2024-11-19 05:32:58,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2024-11-19 05:32:58,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 05:32:58,434 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:32:58,436 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:32:58,436 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 05:32:58,453 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:58,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 120 flow [2024-11-19 05:32:58,474 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2024-11-19 05:32:58,474 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 05:32:58,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 3/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2024-11-19 05:32:58,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 55 transitions, 120 flow [2024-11-19 05:32:58,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 55 transitions, 120 flow [2024-11-19 05:32:58,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:58,480 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:58,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 05:32:58,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:58,483 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:58,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:58,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 05:32:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -818797924, now seen corresponding path program 1 times [2024-11-19 05:32:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284736935] [2024-11-19 05:32:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:58,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284736935] [2024-11-19 05:32:58,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284736935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:58,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:58,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956423893] [2024-11-19 05:32:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:58,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:58,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 55 [2024-11-19 05:32:58,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-19 05:32:58,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:58,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 55 [2024-11-19 05:32:58,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:32:58,569 INFO L124 PetriNetUnfolderBase]: 6/84 cut-off events. [2024-11-19 05:32:58,570 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 05:32:58,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 84 events. 6/84 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 6 based on Foata normal form. 13/95 useless extension candidates. Maximal degree in co-relation 32. Up to 22 conditions per place. [2024-11-19 05:32:58,571 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 9 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-19 05:32:58,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 122 flow [2024-11-19 05:32:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:32:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:32:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-19 05:32:58,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2024-11-19 05:32:58,573 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 120 flow. Second operand 3 states and 126 transitions. [2024-11-19 05:32:58,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 122 flow [2024-11-19 05:32:58,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:32:58,575 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 104 flow [2024-11-19 05:32:58,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-19 05:32:58,576 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2024-11-19 05:32:58,576 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 104 flow [2024-11-19 05:32:58,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-19 05:32:58,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,577 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:32:58,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 05:32:58,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash 425810835, now seen corresponding path program 1 times [2024-11-19 05:32:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364100156] [2024-11-19 05:32:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:32:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:32:58,642 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:32:58,642 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-19 05:32:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-11-19 05:32:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-11-19 05:32:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-11-19 05:32:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-11-19 05:32:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-11-19 05:32:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-11-19 05:32:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-11-19 05:32:58,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:32:58,644 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:32:58,645 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:32:58,645 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 05:32:58,681 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 154 flow [2024-11-19 05:32:58,700 INFO L124 PetriNetUnfolderBase]: 4/95 cut-off events. [2024-11-19 05:32:58,700 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 05:32:58,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 4/95 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2024-11-19 05:32:58,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 154 flow [2024-11-19 05:32:58,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 68 transitions, 154 flow [2024-11-19 05:32:58,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:58,705 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:58,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 05:32:58,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:58,711 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:58,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:58,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 05:32:58,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 28309344, now seen corresponding path program 1 times [2024-11-19 05:32:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068634283] [2024-11-19 05:32:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068634283] [2024-11-19 05:32:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068634283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:58,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:58,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582749154] [2024-11-19 05:32:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:58,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:58,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 68 [2024-11-19 05:32:58,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-11-19 05:32:58,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:58,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 68 [2024-11-19 05:32:58,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:32:58,875 INFO L124 PetriNetUnfolderBase]: 42/234 cut-off events. [2024-11-19 05:32:58,875 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-19 05:32:58,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 234 events. 42/234 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1040 event pairs, 42 based on Foata normal form. 40/264 useless extension candidates. Maximal degree in co-relation 116. Up to 85 conditions per place. [2024-11-19 05:32:58,879 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 12 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-19 05:32:58,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 158 flow [2024-11-19 05:32:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:32:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:32:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-19 05:32:58,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7598039215686274 [2024-11-19 05:32:58,884 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 154 flow. Second operand 3 states and 155 transitions. [2024-11-19 05:32:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 158 flow [2024-11-19 05:32:58,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 56 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 05:32:58,887 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 132 flow [2024-11-19 05:32:58,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-19 05:32:58,889 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2024-11-19 05:32:58,890 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 132 flow [2024-11-19 05:32:58,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-11-19 05:32:58,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,891 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 05:32:58,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 05:32:58,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -821034538, now seen corresponding path program 1 times [2024-11-19 05:32:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087523049] [2024-11-19 05:32:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:32:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:58,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:32:58,917 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:32:58,917 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-19 05:32:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-19 05:32:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-19 05:32:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-19 05:32:58,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-19 05:32:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 05:32:58,918 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:32:58,919 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:32:58,919 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 05:32:58,941 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:58,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 190 flow [2024-11-19 05:32:58,961 INFO L124 PetriNetUnfolderBase]: 5/117 cut-off events. [2024-11-19 05:32:58,962 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 05:32:58,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 117 events. 5/117 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 103. Up to 10 conditions per place. [2024-11-19 05:32:58,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 81 transitions, 190 flow [2024-11-19 05:32:58,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 81 transitions, 190 flow [2024-11-19 05:32:58,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:58,967 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:58,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-19 05:32:58,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:58,971 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:58,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:58,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:58,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:58,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-19 05:32:58,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:58,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1226847441, now seen corresponding path program 1 times [2024-11-19 05:32:58,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:58,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866649916] [2024-11-19 05:32:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866649916] [2024-11-19 05:32:58,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866649916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:58,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34824803] [2024-11-19 05:32:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:58,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:59,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 81 [2024-11-19 05:32:59,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:32:59,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:59,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 81 [2024-11-19 05:32:59,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:32:59,123 INFO L124 PetriNetUnfolderBase]: 204/732 cut-off events. [2024-11-19 05:32:59,123 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-11-19 05:32:59,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 732 events. 204/732 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4879 event pairs, 204 based on Foata normal form. 121/817 useless extension candidates. Maximal degree in co-relation 362. Up to 328 conditions per place. [2024-11-19 05:32:59,131 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 15 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-19 05:32:59,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 196 flow [2024-11-19 05:32:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:32:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:32:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-11-19 05:32:59,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.757201646090535 [2024-11-19 05:32:59,135 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 190 flow. Second operand 3 states and 184 transitions. [2024-11-19 05:32:59,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 67 transitions, 196 flow [2024-11-19 05:32:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 190 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 05:32:59,138 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 160 flow [2024-11-19 05:32:59,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-19 05:32:59,140 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -11 predicate places. [2024-11-19 05:32:59,140 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 160 flow [2024-11-19 05:32:59,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:32:59,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:59,141 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:59,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 05:32:59,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-19 05:32:59,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash -870881889, now seen corresponding path program 1 times [2024-11-19 05:32:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793471307] [2024-11-19 05:32:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:59,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:32:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:59,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:32:59,187 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:32:59,187 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-19 05:32:59,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-19 05:32:59,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-19 05:32:59,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-19 05:32:59,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 05:32:59,189 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:32:59,189 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:32:59,189 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 05:32:59,217 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:59,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 94 transitions, 228 flow [2024-11-19 05:32:59,256 INFO L124 PetriNetUnfolderBase]: 6/139 cut-off events. [2024-11-19 05:32:59,260 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 05:32:59,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 139 events. 6/139 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 306 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 130. Up to 12 conditions per place. [2024-11-19 05:32:59,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 94 transitions, 228 flow [2024-11-19 05:32:59,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 94 transitions, 228 flow [2024-11-19 05:32:59,263 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:59,264 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:59,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-19 05:32:59,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:59,270 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:59,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:59,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:59,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:59,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-11-19 05:32:59,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1518150929, now seen corresponding path program 1 times [2024-11-19 05:32:59,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279018818] [2024-11-19 05:32:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279018818] [2024-11-19 05:32:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279018818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784680182] [2024-11-19 05:32:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:59,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:59,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 94 [2024-11-19 05:32:59,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:32:59,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:59,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 94 [2024-11-19 05:32:59,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:32:59,627 INFO L124 PetriNetUnfolderBase]: 852/2382 cut-off events. [2024-11-19 05:32:59,627 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-11-19 05:32:59,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4277 conditions, 2382 events. 852/2382 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19591 event pairs, 852 based on Foata normal form. 364/2630 useless extension candidates. Maximal degree in co-relation 1260. Up to 1219 conditions per place. [2024-11-19 05:32:59,648 INFO L140 encePairwiseOnDemand]: 79/94 looper letters, 18 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-11-19 05:32:59,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 78 transitions, 236 flow [2024-11-19 05:32:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:32:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:32:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-19 05:32:59,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7553191489361702 [2024-11-19 05:32:59,654 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 228 flow. Second operand 3 states and 213 transitions. [2024-11-19 05:32:59,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 78 transitions, 236 flow [2024-11-19 05:32:59,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 224 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 05:32:59,718 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 188 flow [2024-11-19 05:32:59,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-19 05:32:59,719 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -13 predicate places. [2024-11-19 05:32:59,719 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 188 flow [2024-11-19 05:32:59,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:32:59,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:59,720 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:59,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 05:32:59,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2024-11-19 05:32:59,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1360542709, now seen corresponding path program 1 times [2024-11-19 05:32:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395145285] [2024-11-19 05:32:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:59,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:32:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:32:59,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:32:59,765 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:32:59,765 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-19 05:32:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-19 05:32:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-19 05:32:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-19 05:32:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-19 05:32:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-19 05:32:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-19 05:32:59,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 05:32:59,767 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:32:59,768 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:32:59,768 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-19 05:32:59,807 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:32:59,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 107 transitions, 268 flow [2024-11-19 05:32:59,824 INFO L124 PetriNetUnfolderBase]: 7/161 cut-off events. [2024-11-19 05:32:59,824 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 05:32:59,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 161 events. 7/161 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 383 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 158. Up to 14 conditions per place. [2024-11-19 05:32:59,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 107 transitions, 268 flow [2024-11-19 05:32:59,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 107 transitions, 268 flow [2024-11-19 05:32:59,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:32:59,830 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:32:59,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-19 05:32:59,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:32:59,833 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:32:59,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:32:59,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:32:59,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:32:59,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 05:32:59,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:32:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash 383248826, now seen corresponding path program 1 times [2024-11-19 05:32:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:32:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048601447] [2024-11-19 05:32:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:32:59,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:32:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:32:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:32:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:32:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048601447] [2024-11-19 05:32:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048601447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:32:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:32:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:32:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759808163] [2024-11-19 05:32:59,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:32:59,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:32:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:32:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:32:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:32:59,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 107 [2024-11-19 05:32:59,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-11-19 05:32:59,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:32:59,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 107 [2024-11-19 05:32:59,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:33:00,918 INFO L124 PetriNetUnfolderBase]: 3282/7812 cut-off events. [2024-11-19 05:33:00,918 INFO L125 PetriNetUnfolderBase]: For 8482/8482 co-relation queries the response was YES. [2024-11-19 05:33:00,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 7812 events. 3282/7812 cut-off events. For 8482/8482 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 73932 event pairs, 3282 based on Foata normal form. 1093/8547 useless extension candidates. Maximal degree in co-relation 4368. Up to 4378 conditions per place. [2024-11-19 05:33:00,988 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 21 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-19 05:33:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 278 flow [2024-11-19 05:33:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:33:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:33:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-19 05:33:00,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7538940809968847 [2024-11-19 05:33:00,990 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 268 flow. Second operand 3 states and 242 transitions. [2024-11-19 05:33:00,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 278 flow [2024-11-19 05:33:00,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 89 transitions, 258 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-19 05:33:00,999 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 216 flow [2024-11-19 05:33:01,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-11-19 05:33:01,002 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -15 predicate places. [2024-11-19 05:33:01,002 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 216 flow [2024-11-19 05:33:01,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2024-11-19 05:33:01,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:01,003 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 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] [2024-11-19 05:33:01,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 05:33:01,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-19 05:33:01,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1068034719, now seen corresponding path program 1 times [2024-11-19 05:33:01,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:01,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357500709] [2024-11-19 05:33:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:01,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:01,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:33:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:01,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:33:01,039 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:33:01,039 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-19 05:33:01,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-19 05:33:01,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-19 05:33:01,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-19 05:33:01,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-19 05:33:01,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-19 05:33:01,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-19 05:33:01,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-19 05:33:01,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-19 05:33:01,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 05:33:01,044 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:33:01,045 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:33:01,045 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-19 05:33:01,075 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:33:01,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 120 transitions, 310 flow [2024-11-19 05:33:01,088 INFO L124 PetriNetUnfolderBase]: 8/183 cut-off events. [2024-11-19 05:33:01,089 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 05:33:01,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 183 events. 8/183 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 187. Up to 16 conditions per place. [2024-11-19 05:33:01,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 120 transitions, 310 flow [2024-11-19 05:33:01,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 120 transitions, 310 flow [2024-11-19 05:33:01,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:33:01,092 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:33:01,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 05:33:01,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:33:01,093 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:33:01,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:33:01,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:01,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:33:01,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 05:33:01,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1658887886, now seen corresponding path program 1 times [2024-11-19 05:33:01,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:01,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076201654] [2024-11-19 05:33:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:01,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:33:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:33:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:33:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076201654] [2024-11-19 05:33:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076201654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:33:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:33:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:33:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242148984] [2024-11-19 05:33:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:33:01,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:33:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:33:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:33:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:33:01,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 120 [2024-11-19 05:33:01,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-19 05:33:01,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:33:01,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 120 [2024-11-19 05:33:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:33:04,600 INFO L124 PetriNetUnfolderBase]: 12030/25554 cut-off events. [2024-11-19 05:33:04,600 INFO L125 PetriNetUnfolderBase]: For 34729/34729 co-relation queries the response was YES. [2024-11-19 05:33:04,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49078 conditions, 25554 events. 12030/25554 cut-off events. For 34729/34729 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 264704 event pairs, 12030 based on Foata normal form. 3280/27748 useless extension candidates. Maximal degree in co-relation 14901. Up to 15313 conditions per place. [2024-11-19 05:33:04,821 INFO L140 encePairwiseOnDemand]: 101/120 looper letters, 24 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-19 05:33:04,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 322 flow [2024-11-19 05:33:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:33:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:33:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2024-11-19 05:33:04,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7527777777777778 [2024-11-19 05:33:04,823 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 310 flow. Second operand 3 states and 271 transitions. [2024-11-19 05:33:04,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 322 flow [2024-11-19 05:33:04,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 100 transitions, 292 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-19 05:33:04,841 INFO L231 Difference]: Finished difference. Result has 117 places, 100 transitions, 244 flow [2024-11-19 05:33:04,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=117, PETRI_TRANSITIONS=100} [2024-11-19 05:33:04,842 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -17 predicate places. [2024-11-19 05:33:04,842 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 100 transitions, 244 flow [2024-11-19 05:33:04,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-19 05:33:04,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:04,842 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 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] [2024-11-19 05:33:04,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 05:33:04,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 05:33:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash -799062188, now seen corresponding path program 1 times [2024-11-19 05:33:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478862297] [2024-11-19 05:33:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:04,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:04,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:33:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:04,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:33:04,885 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:33:04,885 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-19 05:33:04,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-19 05:33:04,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-19 05:33:04,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-19 05:33:04,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-19 05:33:04,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-19 05:33:04,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-19 05:33:04,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-19 05:33:04,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-19 05:33:04,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-19 05:33:04,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 05:33:04,888 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:33:04,888 WARN L244 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:33:04,889 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-11-19 05:33:04,923 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:33:04,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 133 transitions, 354 flow [2024-11-19 05:33:04,935 INFO L124 PetriNetUnfolderBase]: 9/205 cut-off events. [2024-11-19 05:33:04,935 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-19 05:33:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 205 events. 9/205 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 510 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 217. Up to 18 conditions per place. [2024-11-19 05:33:04,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 133 transitions, 354 flow [2024-11-19 05:33:04,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 133 transitions, 354 flow [2024-11-19 05:33:04,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:33:04,938 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:33:04,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-19 05:33:04,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:33:04,939 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:33:04,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:33:04,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:04,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:33:04,940 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 05:33:04,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash 945373527, now seen corresponding path program 1 times [2024-11-19 05:33:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944075976] [2024-11-19 05:33:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:33:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:33:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:33:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944075976] [2024-11-19 05:33:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944075976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:33:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:33:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:33:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91890415] [2024-11-19 05:33:04,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:33:04,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:33:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:33:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:33:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:33:04,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2024-11-19 05:33:04,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 133 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2024-11-19 05:33:04,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:33:04,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2024-11-19 05:33:04,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:33:16,537 INFO L124 PetriNetUnfolderBase]: 42648/83148 cut-off events. [2024-11-19 05:33:16,537 INFO L125 PetriNetUnfolderBase]: For 136428/136428 co-relation queries the response was YES. [2024-11-19 05:33:17,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163535 conditions, 83148 events. 42648/83148 cut-off events. For 136428/136428 co-relation queries the response was YES. Maximal size of possible extension queue 3516. Compared 925538 event pairs, 42648 based on Foata normal form. 9841/89717 useless extension candidates. Maximal degree in co-relation 50139. Up to 52492 conditions per place. [2024-11-19 05:33:17,643 INFO L140 encePairwiseOnDemand]: 112/133 looper letters, 27 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-11-19 05:33:17,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 111 transitions, 368 flow [2024-11-19 05:33:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:33:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:33:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2024-11-19 05:33:17,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7518796992481203 [2024-11-19 05:33:17,645 INFO L175 Difference]: Start difference. First operand has 149 places, 133 transitions, 354 flow. Second operand 3 states and 300 transitions. [2024-11-19 05:33:17,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 111 transitions, 368 flow [2024-11-19 05:33:17,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 111 transitions, 326 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-11-19 05:33:17,748 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 272 flow [2024-11-19 05:33:17,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-11-19 05:33:17,749 INFO L277 CegarLoopForPetriNet]: 149 programPoint places, -19 predicate places. [2024-11-19 05:33:17,751 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 272 flow [2024-11-19 05:33:17,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2024-11-19 05:33:17,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:17,751 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:33:17,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 05:33:17,752 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 05:33:17,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1601712403, now seen corresponding path program 1 times [2024-11-19 05:33:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:17,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304037497] [2024-11-19 05:33:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:17,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:33:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:33:17,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:33:17,791 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:33:17,791 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-19 05:33:17,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-19 05:33:17,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-19 05:33:17,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-19 05:33:17,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-19 05:33:17,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-19 05:33:17,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-19 05:33:17,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-19 05:33:17,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 05:33:17,793 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 05:33:17,793 WARN L244 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:33:17,793 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-11-19 05:33:17,820 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:33:17,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 146 transitions, 400 flow [2024-11-19 05:33:17,835 INFO L124 PetriNetUnfolderBase]: 10/227 cut-off events. [2024-11-19 05:33:17,835 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-19 05:33:17,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 227 events. 10/227 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 573 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 248. Up to 20 conditions per place. [2024-11-19 05:33:17,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 146 transitions, 400 flow [2024-11-19 05:33:17,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 146 transitions, 400 flow [2024-11-19 05:33:17,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:33:17,839 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;@299cb8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:33:17,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-19 05:33:17,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:33:17,840 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-19 05:33:17,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:33:17,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:33:17,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:33:17,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-11-19 05:33:17,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:33:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash -393901527, now seen corresponding path program 1 times [2024-11-19 05:33:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:33:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492131738] [2024-11-19 05:33:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:33:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:33:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:33:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:33:17,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:33:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492131738] [2024-11-19 05:33:17,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492131738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:33:17,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:33:17,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:33:17,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442051348] [2024-11-19 05:33:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:33:17,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:33:17,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:33:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:33:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:33:17,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 146 [2024-11-19 05:33:17,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 146 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2024-11-19 05:33:17,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:33:17,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 146 [2024-11-19 05:33:17,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand