./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 023d838f 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/39_rand_lock_p0_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:09:14,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:09:15,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-10 14:09:15,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:09:15,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:09:15,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:09:15,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:09:15,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:09:15,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:09:15,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:09:15,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:09:15,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:09:15,136 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:09:15,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:09:15,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:09:15,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:09:15,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:09:15,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:09:15,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:09:15,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:09:15,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:09:15,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:09:15,145 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-10 14:09:15,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:09:15,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:09:15,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:09:15,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:09:15,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:09:15,147 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:09:15,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:09:15,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:09:15,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:09:15,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:09:15,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:09:15,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:09:15,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:09:15,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:09:15,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:09:15,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:09:15,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:09:15,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:09:15,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-11-10 14:09:15,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:09:15,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:09:15,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:09:15,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:09:15,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:09:15,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-10 14:09:16,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:09:17,220 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:09:17,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-10 14:09:17,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0660b6861/a515d061d2b547c8b3e6506d9998e0fa/FLAG6177d7624 [2024-11-10 14:09:17,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0660b6861/a515d061d2b547c8b3e6506d9998e0fa [2024-11-10 14:09:17,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:09:17,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:09:17,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:09:17,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:09:17,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:09:17,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15abd3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17, skipping insertion in model container [2024-11-10 14:09:17,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:09:17,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:09:17,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:09:17,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:09:17,862 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:09:17,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17 WrapperNode [2024-11-10 14:09:17,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:09:17,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:09:17,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:09:17,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:09:17,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,913 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-11-10 14:09:17,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:09:17,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:09:17,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:09:17,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:09:17,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,929 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:09:17,937 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:09:17,937 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:09:17,937 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:09:17,938 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (1/1) ... [2024-11-10 14:09:17,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:09:17,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:09:17,981 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) [2024-11-10 14:09:17,984 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 [2024-11-10 14:09:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 14:09:18,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 14:09:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 14:09:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:09:18,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:09:18,040 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 14:09:18,192 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:09:18,194 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:09:18,345 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 14:09:18,345 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:09:18,416 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:09:18,416 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:09:18,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:09:18 BoogieIcfgContainer [2024-11-10 14:09:18,417 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:09:18,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:09:18,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:09:18,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:09:18,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:09:17" (1/3) ... [2024-11-10 14:09:18,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4472350b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:09:18, skipping insertion in model container [2024-11-10 14:09:18,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:09:17" (2/3) ... [2024-11-10 14:09:18,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4472350b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:09:18, skipping insertion in model container [2024-11-10 14:09:18,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:09:18" (3/3) ... [2024-11-10 14:09:18,426 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-11-10 14:09:18,444 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:09:18,444 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 14:09:18,444 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 14:09:18,498 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:09:18,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 75 transitions, 154 flow [2024-11-10 14:09:18,586 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2024-11-10 14:09:18,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:18,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 4/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2024-11-10 14:09:18,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 75 transitions, 154 flow [2024-11-10 14:09:18,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 154 flow [2024-11-10 14:09:18,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:09:18,613 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;@7383c88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:09:18,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 14:09:18,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:09:18,626 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:09:18,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:18,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:18,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:18,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 14:09:18,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash -728396876, now seen corresponding path program 1 times [2024-11-10 14:09:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:18,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966954016] [2024-11-10 14:09:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966954016] [2024-11-10 14:09:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966954016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:18,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:18,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 14:09:18,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059661867] [2024-11-10 14:09:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:18,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:09:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:09:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:09:18,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 75 [2024-11-10 14:09:18,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2024-11-10 14:09:18,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:18,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 75 [2024-11-10 14:09:18,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:18,942 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2024-11-10 14:09:18,942 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 14:09:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 1/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 13/83 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2024-11-10 14:09:18,945 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 5 selfloop transitions, 0 changer transitions 0/67 dead transitions. [2024-11-10 14:09:18,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 148 flow [2024-11-10 14:09:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:09:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 14:09:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 140 transitions. [2024-11-10 14:09:18,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2024-11-10 14:09:18,960 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 154 flow. Second operand 2 states and 140 transitions. [2024-11-10 14:09:18,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 148 flow [2024-11-10 14:09:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:18,966 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 138 flow [2024-11-10 14:09:18,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=138, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-10 14:09:18,976 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-11-10 14:09:18,977 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 138 flow [2024-11-10 14:09:18,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2024-11-10 14:09:18,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:18,977 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:18,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:09:18,978 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 14:09:18,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1006394091, now seen corresponding path program 1 times [2024-11-10 14:09:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:18,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018407835] [2024-11-10 14:09:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:18,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:19,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:09:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:19,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:09:19,051 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:09:19,052 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 14:09:19,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-11-10 14:09:19,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-11-10 14:09:19,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-11-10 14:09:19,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-11-10 14:09:19,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-11-10 14:09:19,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-11-10 14:09:19,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:09:19,056 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:09:19,061 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:09:19,062 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 14:09:19,119 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:09:19,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2024-11-10 14:09:19,171 INFO L124 PetriNetUnfolderBase]: 7/142 cut-off events. [2024-11-10 14:09:19,172 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 14:09:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 142 events. 7/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2024-11-10 14:09:19,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2024-11-10 14:09:19,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 120 transitions, 250 flow [2024-11-10 14:09:19,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:09:19,179 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;@7383c88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:09:19,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-10 14:09:19,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:09:19,189 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:09:19,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:19,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:19,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:19,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 14:09:19,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1746174644, now seen corresponding path program 1 times [2024-11-10 14:09:19,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502301615] [2024-11-10 14:09:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:19,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502301615] [2024-11-10 14:09:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502301615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:19,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 14:09:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037313914] [2024-11-10 14:09:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:19,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:09:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:09:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:09:19,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2024-11-10 14:09:19,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 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) [2024-11-10 14:09:19,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:19,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2024-11-10 14:09:19,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:19,376 INFO L124 PetriNetUnfolderBase]: 27/343 cut-off events. [2024-11-10 14:09:19,376 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 14:09:19,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 343 events. 27/343 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1272 event pairs, 20 based on Foata normal form. 71/398 useless extension candidates. Maximal degree in co-relation 312. Up to 51 conditions per place. [2024-11-10 14:09:19,384 INFO L140 encePairwiseOnDemand]: 112/120 looper letters, 10 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2024-11-10 14:09:19,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 248 flow [2024-11-10 14:09:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:09:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 14:09:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2024-11-10 14:09:19,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.925 [2024-11-10 14:09:19,388 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 250 flow. Second operand 2 states and 222 transitions. [2024-11-10 14:09:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 248 flow [2024-11-10 14:09:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:19,393 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 228 flow [2024-11-10 14:09:19,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-11-10 14:09:19,395 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -7 predicate places. [2024-11-10 14:09:19,395 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 228 flow [2024-11-10 14:09:19,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 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) [2024-11-10 14:09:19,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:19,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:19,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:09:19,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 14:09:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1889808056, now seen corresponding path program 1 times [2024-11-10 14:09:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069514488] [2024-11-10 14:09:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:19,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:19,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069514488] [2024-11-10 14:09:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069514488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:09:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868615883] [2024-11-10 14:09:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:19,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:09:19,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:09:19,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:09:19,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2024-11-10 14:09:19,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2024-11-10 14:09:19,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:19,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2024-11-10 14:09:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:19,661 INFO L124 PetriNetUnfolderBase]: 64/531 cut-off events. [2024-11-10 14:09:19,661 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-10 14:09:19,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 531 events. 64/531 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2548 event pairs, 20 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 682. Up to 80 conditions per place. [2024-11-10 14:09:19,673 INFO L140 encePairwiseOnDemand]: 110/120 looper letters, 21 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2024-11-10 14:09:19,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 122 transitions, 317 flow [2024-11-10 14:09:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:09:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:09:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2024-11-10 14:09:19,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2024-11-10 14:09:19,677 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 228 flow. Second operand 3 states and 319 transitions. [2024-11-10 14:09:19,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 122 transitions, 317 flow [2024-11-10 14:09:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 317 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:19,686 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 296 flow [2024-11-10 14:09:19,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-11-10 14:09:19,688 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2024-11-10 14:09:19,689 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 296 flow [2024-11-10 14:09:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2024-11-10 14:09:19,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:19,690 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:19,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:09:19,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 14:09:19,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash -382901177, now seen corresponding path program 1 times [2024-11-10 14:09:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:19,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729161412] [2024-11-10 14:09:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:19,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:19,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:09:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:19,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:09:19,746 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:09:19,746 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-10 14:09:19,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-10 14:09:19,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-10 14:09:19,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-10 14:09:19,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-10 14:09:19,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-10 14:09:19,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-10 14:09:19,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-10 14:09:19,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-10 14:09:19,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-10 14:09:19,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:09:19,750 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 14:09:19,751 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:09:19,751 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 14:09:19,808 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:09:19,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 165 transitions, 348 flow [2024-11-10 14:09:19,848 INFO L124 PetriNetUnfolderBase]: 10/199 cut-off events. [2024-11-10 14:09:19,849 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 14:09:19,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 10/199 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 438 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2024-11-10 14:09:19,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 165 transitions, 348 flow [2024-11-10 14:09:19,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 165 transitions, 348 flow [2024-11-10 14:09:19,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:09:19,860 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;@7383c88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:09:19,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 14:09:19,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:09:19,872 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:09:19,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:19,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:19,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:19,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 14:09:19,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 902334056, now seen corresponding path program 1 times [2024-11-10 14:09:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826698679] [2024-11-10 14:09:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:19,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826698679] [2024-11-10 14:09:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826698679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:19,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 14:09:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472342815] [2024-11-10 14:09:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:19,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:09:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:09:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:09:19,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 165 [2024-11-10 14:09:19,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 165 transitions, 348 flow. Second operand has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 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) [2024-11-10 14:09:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 165 [2024-11-10 14:09:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:20,234 INFO L124 PetriNetUnfolderBase]: 253/1802 cut-off events. [2024-11-10 14:09:20,234 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-10 14:09:20,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 1802 events. 253/1802 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13812 event pairs, 220 based on Foata normal form. 373/2084 useless extension candidates. Maximal degree in co-relation 1746. Up to 376 conditions per place. [2024-11-10 14:09:20,254 INFO L140 encePairwiseOnDemand]: 154/165 looper letters, 15 selfloop transitions, 0 changer transitions 0/151 dead transitions. [2024-11-10 14:09:20,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 350 flow [2024-11-10 14:09:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:09:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 14:09:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2024-11-10 14:09:20,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9212121212121213 [2024-11-10 14:09:20,259 INFO L175 Difference]: Start difference. First operand has 165 places, 165 transitions, 348 flow. Second operand 2 states and 304 transitions. [2024-11-10 14:09:20,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 350 flow [2024-11-10 14:09:20,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 151 transitions, 348 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:20,263 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 318 flow [2024-11-10 14:09:20,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2024-11-10 14:09:20,264 INFO L277 CegarLoopForPetriNet]: 165 programPoint places, -9 predicate places. [2024-11-10 14:09:20,264 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 318 flow [2024-11-10 14:09:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 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) [2024-11-10 14:09:20,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:20,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:20,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:09:20,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 14:09:20,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2027207084, now seen corresponding path program 1 times [2024-11-10 14:09:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274290406] [2024-11-10 14:09:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:20,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274290406] [2024-11-10 14:09:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274290406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:20,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:20,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:09:20,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694451400] [2024-11-10 14:09:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:20,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:09:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:09:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:09:20,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 165 [2024-11-10 14:09:20,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2024-11-10 14:09:20,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:20,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 165 [2024-11-10 14:09:20,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:21,154 INFO L124 PetriNetUnfolderBase]: 1172/5274 cut-off events. [2024-11-10 14:09:21,154 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-11-10 14:09:21,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 5274 events. 1172/5274 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 51136 event pairs, 427 based on Foata normal form. 0/5020 useless extension candidates. Maximal degree in co-relation 7300. Up to 1116 conditions per place. [2024-11-10 14:09:21,204 INFO L140 encePairwiseOnDemand]: 150/165 looper letters, 32 selfloop transitions, 12 changer transitions 0/171 dead transitions. [2024-11-10 14:09:21,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 171 transitions, 456 flow [2024-11-10 14:09:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:09:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:09:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2024-11-10 14:09:21,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8828282828282829 [2024-11-10 14:09:21,207 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 318 flow. Second operand 3 states and 437 transitions. [2024-11-10 14:09:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 171 transitions, 456 flow [2024-11-10 14:09:21,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 171 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:21,213 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 420 flow [2024-11-10 14:09:21,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-11-10 14:09:21,215 INFO L277 CegarLoopForPetriNet]: 165 programPoint places, -5 predicate places. [2024-11-10 14:09:21,216 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 420 flow [2024-11-10 14:09:21,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2024-11-10 14:09:21,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:21,217 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:21,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:09:21,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-10 14:09:21,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2065469495, now seen corresponding path program 1 times [2024-11-10 14:09:21,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:21,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653367620] [2024-11-10 14:09:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:21,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:21,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:09:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:21,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:09:21,260 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:09:21,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-10 14:09:21,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-10 14:09:21,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-10 14:09:21,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-10 14:09:21,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-10 14:09:21,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-10 14:09:21,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-10 14:09:21,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:09:21,264 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 14:09:21,265 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:09:21,265 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 14:09:21,314 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:09:21,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 210 transitions, 448 flow [2024-11-10 14:09:21,422 INFO L124 PetriNetUnfolderBase]: 13/256 cut-off events. [2024-11-10 14:09:21,423 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 14:09:21,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 256 events. 13/256 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 685 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 207. Up to 10 conditions per place. [2024-11-10 14:09:21,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 210 transitions, 448 flow [2024-11-10 14:09:21,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 210 transitions, 448 flow [2024-11-10 14:09:21,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:09:21,432 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;@7383c88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:09:21,435 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-10 14:09:21,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:09:21,442 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:09:21,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:21,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:21,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:21,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-10 14:09:21,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash 134338088, now seen corresponding path program 1 times [2024-11-10 14:09:21,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:21,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015414503] [2024-11-10 14:09:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:21,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015414503] [2024-11-10 14:09:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015414503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 14:09:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46356849] [2024-11-10 14:09:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:21,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:09:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:09:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:09:21,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 210 [2024-11-10 14:09:21,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 210 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 177.0) internal successors, (354), 2 states have internal predecessors, (354), 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) [2024-11-10 14:09:21,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:21,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 210 [2024-11-10 14:09:21,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:23,024 INFO L124 PetriNetUnfolderBase]: 1875/9657 cut-off events. [2024-11-10 14:09:23,026 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-11-10 14:09:23,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12905 conditions, 9657 events. 1875/9657 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 106548 event pairs, 1720 based on Foata normal form. 1987/11159 useless extension candidates. Maximal degree in co-relation 9748. Up to 2501 conditions per place. [2024-11-10 14:09:23,136 INFO L140 encePairwiseOnDemand]: 196/210 looper letters, 20 selfloop transitions, 0 changer transitions 0/193 dead transitions. [2024-11-10 14:09:23,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 193 transitions, 454 flow [2024-11-10 14:09:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:09:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 14:09:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 386 transitions. [2024-11-10 14:09:23,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.919047619047619 [2024-11-10 14:09:23,138 INFO L175 Difference]: Start difference. First operand has 210 places, 210 transitions, 448 flow. Second operand 2 states and 386 transitions. [2024-11-10 14:09:23,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 193 transitions, 454 flow [2024-11-10 14:09:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 193 transitions, 448 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:23,143 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 408 flow [2024-11-10 14:09:23,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=408, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-11-10 14:09:23,146 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, -11 predicate places. [2024-11-10 14:09:23,147 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 408 flow [2024-11-10 14:09:23,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 177.0) internal successors, (354), 2 states have internal predecessors, (354), 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) [2024-11-10 14:09:23,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:23,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:23,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 14:09:23,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-10 14:09:23,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash -354977556, now seen corresponding path program 1 times [2024-11-10 14:09:23,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:23,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393583566] [2024-11-10 14:09:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:23,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393583566] [2024-11-10 14:09:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393583566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:09:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893786072] [2024-11-10 14:09:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:23,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:09:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:09:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:09:23,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 210 [2024-11-10 14:09:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2024-11-10 14:09:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 210 [2024-11-10 14:09:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:29,800 INFO L124 PetriNetUnfolderBase]: 15875/52831 cut-off events. [2024-11-10 14:09:29,801 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-11-10 14:09:30,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76648 conditions, 52831 events. 15875/52831 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 709470 event pairs, 6167 based on Foata normal form. 0/49996 useless extension candidates. Maximal degree in co-relation 76641. Up to 13336 conditions per place. [2024-11-10 14:09:30,588 INFO L140 encePairwiseOnDemand]: 190/210 looper letters, 43 selfloop transitions, 16 changer transitions 0/220 dead transitions. [2024-11-10 14:09:30,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 220 transitions, 595 flow [2024-11-10 14:09:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:09:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:09:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2024-11-10 14:09:30,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2024-11-10 14:09:30,591 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 408 flow. Second operand 3 states and 555 transitions. [2024-11-10 14:09:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 220 transitions, 595 flow [2024-11-10 14:09:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 220 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:30,599 INFO L231 Difference]: Finished difference. Result has 203 places, 209 transitions, 544 flow [2024-11-10 14:09:30,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=203, PETRI_TRANSITIONS=209} [2024-11-10 14:09:30,602 INFO L277 CegarLoopForPetriNet]: 210 programPoint places, -7 predicate places. [2024-11-10 14:09:30,602 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 209 transitions, 544 flow [2024-11-10 14:09:30,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2024-11-10 14:09:30,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:30,603 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:30,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 14:09:30,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-10 14:09:30,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -174996239, now seen corresponding path program 1 times [2024-11-10 14:09:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228465333] [2024-11-10 14:09:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:30,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:09:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:09:30,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:09:30,653 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:09:30,653 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-10 14:09:30,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-10 14:09:30,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-10 14:09:30,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-10 14:09:30,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-10 14:09:30,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-10 14:09:30,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-10 14:09:30,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-10 14:09:30,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-10 14:09:30,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-10 14:09:30,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-10 14:09:30,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 14:09:30,657 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 14:09:30,658 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:09:30,658 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-10 14:09:30,712 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:09:30,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 255 transitions, 550 flow [2024-11-10 14:09:30,753 INFO L124 PetriNetUnfolderBase]: 16/313 cut-off events. [2024-11-10 14:09:30,753 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 14:09:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 313 events. 16/313 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 941 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 269. Up to 12 conditions per place. [2024-11-10 14:09:30,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 255 transitions, 550 flow [2024-11-10 14:09:30,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 255 transitions, 550 flow [2024-11-10 14:09:30,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:09:30,765 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;@7383c88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:09:30,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 14:09:30,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:09:30,768 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:09:30,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:09:30,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:30,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:30,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-10 14:09:30,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1354231056, now seen corresponding path program 1 times [2024-11-10 14:09:30,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889993501] [2024-11-10 14:09:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:30,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:30,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889993501] [2024-11-10 14:09:30,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889993501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:30,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:30,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 14:09:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182486204] [2024-11-10 14:09:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:30,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 14:09:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 14:09:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 14:09:30,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 255 [2024-11-10 14:09:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 255 transitions, 550 flow. Second operand has 2 states, 2 states have (on average 214.0) internal successors, (428), 2 states have internal predecessors, (428), 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) [2024-11-10 14:09:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 255 [2024-11-10 14:09:30,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:38,229 INFO L124 PetriNetUnfolderBase]: 12477/51492 cut-off events. [2024-11-10 14:09:38,230 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-11-10 14:09:38,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71616 conditions, 51492 events. 12477/51492 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 722141 event pairs, 11720 based on Foata normal form. 10666/59654 useless extension candidates. Maximal degree in co-relation 53734. Up to 15626 conditions per place. [2024-11-10 14:09:38,799 INFO L140 encePairwiseOnDemand]: 238/255 looper letters, 25 selfloop transitions, 0 changer transitions 0/235 dead transitions. [2024-11-10 14:09:38,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 235 transitions, 560 flow [2024-11-10 14:09:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 14:09:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 14:09:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 468 transitions. [2024-11-10 14:09:38,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2024-11-10 14:09:38,801 INFO L175 Difference]: Start difference. First operand has 255 places, 255 transitions, 550 flow. Second operand 2 states and 468 transitions. [2024-11-10 14:09:38,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 235 transitions, 560 flow [2024-11-10 14:09:38,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 235 transitions, 548 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-10 14:09:38,808 INFO L231 Difference]: Finished difference. Result has 242 places, 235 transitions, 498 flow [2024-11-10 14:09:38,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=498, PETRI_PLACES=242, PETRI_TRANSITIONS=235} [2024-11-10 14:09:38,809 INFO L277 CegarLoopForPetriNet]: 255 programPoint places, -13 predicate places. [2024-11-10 14:09:38,810 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 235 transitions, 498 flow [2024-11-10 14:09:38,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 214.0) internal successors, (428), 2 states have internal predecessors, (428), 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) [2024-11-10 14:09:38,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:38,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:38,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 14:09:38,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-10 14:09:38,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash -670749068, now seen corresponding path program 1 times [2024-11-10 14:09:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:38,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813190015] [2024-11-10 14:09:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813190015] [2024-11-10 14:09:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813190015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:38,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:09:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999011990] [2024-11-10 14:09:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:38,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:09:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:09:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:09:38,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 255 [2024-11-10 14:09:38,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 235 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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) [2024-11-10 14:09:38,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:38,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 255 [2024-11-10 14:09:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand