./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/09_fmaxsym.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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:30:35,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:30:35,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-22 17:30:35,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:30:35,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:30:35,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:30:35,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:30:35,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:30:35,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:30:35,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:30:35,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:30:35,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:30:35,925 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:30:35,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:30:35,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:30:35,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:30:35,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:30:35,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:30:35,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:30:35,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:30:35,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:30:35,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:30:35,928 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-22 17:30:35,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:30:35,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 17:30:35,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:30:35,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:30:35,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:30:35,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:30:35,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:30:35,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:30:35,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:30:35,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:30:35,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:30:35,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:30:35,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-11-22 17:30:36,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:30:36,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:30:36,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:30:36,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:30:36,154 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:30:36,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-22 17:30:37,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:30:37,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:30:37,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-22 17:30:37,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2bdca9a/2fa3b8a721d64eaf8cfa67e829152de3/FLAGc135aad4f [2024-11-22 17:30:37,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2bdca9a/2fa3b8a721d64eaf8cfa67e829152de3 [2024-11-22 17:30:37,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:30:37,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:30:37,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:30:37,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:30:37,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:30:37,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:30:37" (1/1) ... [2024-11-22 17:30:37,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427783ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:37, skipping insertion in model container [2024-11-22 17:30:37,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:30:37" (1/1) ... [2024-11-22 17:30:37,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:30:37,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:30:37,998 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:30:38,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:30:38,068 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:30:38,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38 WrapperNode [2024-11-22 17:30:38,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:30:38,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:30:38,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:30:38,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:30:38,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,117 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 112 [2024-11-22 17:30:38,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:30:38,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:30:38,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:30:38,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:30:38,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:30:38,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:30:38,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:30:38,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:30:38,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (1/1) ... [2024-11-22 17:30:38,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:30:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:38,195 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) [2024-11-22 17:30:38,198 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 [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-22 17:30:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 17:30:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:30:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:30:38,241 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 17:30:38,368 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:30:38,370 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:30:38,529 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 17:30:38,529 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:30:38,548 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:30:38,549 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 17:30:38,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:30:38 BoogieIcfgContainer [2024-11-22 17:30:38,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:30:38,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:30:38,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:30:38,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:30:38,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:30:37" (1/3) ... [2024-11-22 17:30:38,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee0f893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:30:38, skipping insertion in model container [2024-11-22 17:30:38,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:30:38" (2/3) ... [2024-11-22 17:30:38,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee0f893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:30:38, skipping insertion in model container [2024-11-22 17:30:38,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:30:38" (3/3) ... [2024-11-22 17:30:38,559 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-11-22 17:30:38,572 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:30:38,573 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-22 17:30:38,573 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 17:30:38,667 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 17:30:38,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 124 transitions, 252 flow [2024-11-22 17:30:38,741 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2024-11-22 17:30:38,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:30:38,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 133 events. 10/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2024-11-22 17:30:38,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 124 transitions, 252 flow [2024-11-22 17:30:38,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 124 transitions, 252 flow [2024-11-22 17:30:38,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:30:38,776 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;@7191490b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:30:38,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-22 17:30:38,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:30:38,795 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-22 17:30:38,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:30:38,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:38,796 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, 1] [2024-11-22 17:30:38,796 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 17:30:38,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:38,803 INFO L85 PathProgramCache]: Analyzing trace with hash -240468847, now seen corresponding path program 1 times [2024-11-22 17:30:38,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773173386] [2024-11-22 17:30:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:39,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:39,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773173386] [2024-11-22 17:30:39,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773173386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:39,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:39,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:30:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771648318] [2024-11-22 17:30:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:39,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:30:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:30:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:30:39,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2024-11-22 17:30:39,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 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) [2024-11-22 17:30:39,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:39,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2024-11-22 17:30:39,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:39,759 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-11-22 17:30:39,761 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 17:30:39,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 115 events. 3/115 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 15/121 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2024-11-22 17:30:39,763 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 15 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-22 17:30:39,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 266 flow [2024-11-22 17:30:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:30:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:30:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-11-22 17:30:39,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2024-11-22 17:30:39,782 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 252 flow. Second operand 6 states and 592 transitions. [2024-11-22 17:30:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 266 flow [2024-11-22 17:30:39,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:30:39,791 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 236 flow [2024-11-22 17:30:39,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-11-22 17:30:39,797 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-11-22 17:30:39,798 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 236 flow [2024-11-22 17:30:39,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 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) [2024-11-22 17:30:39,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:39,799 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:39,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:30:39,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 17:30:39,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -587319925, now seen corresponding path program 1 times [2024-11-22 17:30:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:39,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64374557] [2024-11-22 17:30:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:39,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64374557] [2024-11-22 17:30:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64374557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:39,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:30:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659085744] [2024-11-22 17:30:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:39,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:30:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:30:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:30:39,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 124 [2024-11-22 17:30:39,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-22 17:30:39,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:39,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 124 [2024-11-22 17:30:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:39,918 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2024-11-22 17:30:39,919 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 17:30:39,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 127 events. 3/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2024-11-22 17:30:39,920 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 9 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-22 17:30:39,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 262 flow [2024-11-22 17:30:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:30:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:30:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-11-22 17:30:39,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2024-11-22 17:30:39,925 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 236 flow. Second operand 3 states and 327 transitions. [2024-11-22 17:30:39,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 262 flow [2024-11-22 17:30:39,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:30:39,928 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 238 flow [2024-11-22 17:30:39,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-11-22 17:30:39,929 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-11-22 17:30:39,930 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 238 flow [2024-11-22 17:30:39,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-22 17:30:39,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:39,931 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:39,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:30:39,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 17:30:39,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1497332229, now seen corresponding path program 1 times [2024-11-22 17:30:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:39,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030379157] [2024-11-22 17:30:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030379157] [2024-11-22 17:30:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030379157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111745542] [2024-11-22 17:30:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:40,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:40,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:40,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:40,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:30:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:40,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:30:40,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:40,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111745542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:40,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:40,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:30:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844556999] [2024-11-22 17:30:40,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:40,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:30:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:30:40,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:30:40,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-11-22 17:30:40,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 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) [2024-11-22 17:30:40,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:40,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-11-22 17:30:40,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:40,362 INFO L124 PetriNetUnfolderBase]: 3/142 cut-off events. [2024-11-22 17:30:40,362 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 17:30:40,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 142 events. 3/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 11 conditions per place. [2024-11-22 17:30:40,363 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 13 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-22 17:30:40,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 300 flow [2024-11-22 17:30:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:30:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:30:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 942 transitions. [2024-11-22 17:30:40,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8440860215053764 [2024-11-22 17:30:40,366 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 238 flow. Second operand 9 states and 942 transitions. [2024-11-22 17:30:40,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 300 flow [2024-11-22 17:30:40,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:40,368 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 286 flow [2024-11-22 17:30:40,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-22 17:30:40,369 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-11-22 17:30:40,369 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 286 flow [2024-11-22 17:30:40,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 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) [2024-11-22 17:30:40,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:40,370 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:40,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 17:30:40,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:40,578 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 17:30:40,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1309340731, now seen corresponding path program 2 times [2024-11-22 17:30:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:40,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158364852] [2024-11-22 17:30:40,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:40,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:40,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158364852] [2024-11-22 17:30:40,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158364852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:40,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644131259] [2024-11-22 17:30:40,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:40,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:40,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:40,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:30:40,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:40,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:40,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 17:30:40,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:40,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 17:30:41,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644131259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:41,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 17:30:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925676964] [2024-11-22 17:30:41,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:41,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 17:30:41,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 17:30:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:30:41,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-11-22 17:30:41,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 286 flow. Second operand has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 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) [2024-11-22 17:30:41,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:41,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-11-22 17:30:41,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:41,338 INFO L124 PetriNetUnfolderBase]: 3/181 cut-off events. [2024-11-22 17:30:41,338 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-22 17:30:41,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 181 events. 3/181 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-11-22 17:30:41,339 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 16 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-11-22 17:30:41,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 428 flow [2024-11-22 17:30:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 17:30:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 17:30:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1873 transitions. [2024-11-22 17:30:41,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.83915770609319 [2024-11-22 17:30:41,343 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 286 flow. Second operand 18 states and 1873 transitions. [2024-11-22 17:30:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 428 flow [2024-11-22 17:30:41,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:41,346 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 386 flow [2024-11-22 17:30:41,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=386, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-11-22 17:30:41,347 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-11-22 17:30:41,347 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 386 flow [2024-11-22 17:30:41,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 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) [2024-11-22 17:30:41,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:41,349 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:41,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 17:30:41,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 17:30:41,550 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 17:30:41,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1738405813, now seen corresponding path program 3 times [2024-11-22 17:30:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044240251] [2024-11-22 17:30:41,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 17:30:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:41,601 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 17:30:41,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 17:30:41,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:30:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:30:41,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:30:41,639 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:30:41,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-22 17:30:41,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-22 17:30:41,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-22 17:30:41,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-22 17:30:41,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-22 17:30:41,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-22 17:30:41,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-22 17:30:41,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-22 17:30:41,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-22 17:30:41,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-22 17:30:41,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 17:30:41,644 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-22 17:30:41,646 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:30:41,646 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 17:30:41,676 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 17:30:41,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 193 transitions, 396 flow [2024-11-22 17:30:41,695 INFO L124 PetriNetUnfolderBase]: 17/213 cut-off events. [2024-11-22 17:30:41,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 17:30:41,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 213 events. 17/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 390 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2024-11-22 17:30:41,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 193 transitions, 396 flow [2024-11-22 17:30:41,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 193 transitions, 396 flow [2024-11-22 17:30:41,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:30:41,700 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;@7191490b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:30:41,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-22 17:30:41,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:30:41,703 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-22 17:30:41,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:30:41,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:41,716 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, 1] [2024-11-22 17:30:41,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 17:30:41,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713394, now seen corresponding path program 1 times [2024-11-22 17:30:41,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:41,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641008610] [2024-11-22 17:30:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:41,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641008610] [2024-11-22 17:30:41,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641008610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:41,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:41,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:30:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60227910] [2024-11-22 17:30:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:41,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:30:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:30:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:30:41,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 193 [2024-11-22 17:30:41,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 193 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 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) [2024-11-22 17:30:41,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:41,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 193 [2024-11-22 17:30:41,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:42,078 INFO L124 PetriNetUnfolderBase]: 104/729 cut-off events. [2024-11-22 17:30:42,079 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-22 17:30:42,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 729 events. 104/729 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3762 event pairs, 72 based on Foata normal form. 162/784 useless extension candidates. Maximal degree in co-relation 670. Up to 185 conditions per place. [2024-11-22 17:30:42,087 INFO L140 encePairwiseOnDemand]: 176/193 looper letters, 24 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2024-11-22 17:30:42,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 416 flow [2024-11-22 17:30:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:30:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:30:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2024-11-22 17:30:42,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8074265975820379 [2024-11-22 17:30:42,089 INFO L175 Difference]: Start difference. First operand has 183 places, 193 transitions, 396 flow. Second operand 6 states and 935 transitions. [2024-11-22 17:30:42,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 416 flow [2024-11-22 17:30:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:30:42,092 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 368 flow [2024-11-22 17:30:42,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-22 17:30:42,094 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-11-22 17:30:42,095 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 368 flow [2024-11-22 17:30:42,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 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) [2024-11-22 17:30:42,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:42,096 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:42,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 17:30:42,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 17:30:42,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1555781261, now seen corresponding path program 1 times [2024-11-22 17:30:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849626251] [2024-11-22 17:30:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:42,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849626251] [2024-11-22 17:30:42,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849626251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:42,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:42,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:30:42,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713179907] [2024-11-22 17:30:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:42,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:30:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:30:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:30:42,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 193 [2024-11-22 17:30:42,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-11-22 17:30:42,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:42,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 193 [2024-11-22 17:30:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:42,241 INFO L124 PetriNetUnfolderBase]: 33/496 cut-off events. [2024-11-22 17:30:42,241 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-22 17:30:42,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 496 events. 33/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2022 event pairs, 20 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 521. Up to 56 conditions per place. [2024-11-22 17:30:42,245 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2024-11-22 17:30:42,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 404 flow [2024-11-22 17:30:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:30:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:30:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-11-22 17:30:42,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791018998272885 [2024-11-22 17:30:42,247 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 368 flow. Second operand 3 states and 509 transitions. [2024-11-22 17:30:42,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 404 flow [2024-11-22 17:30:42,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:30:42,251 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 370 flow [2024-11-22 17:30:42,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2024-11-22 17:30:42,253 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-11-22 17:30:42,253 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 370 flow [2024-11-22 17:30:42,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-11-22 17:30:42,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:42,254 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:42,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:30:42,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 17:30:42,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash 846948760, now seen corresponding path program 1 times [2024-11-22 17:30:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:42,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685894703] [2024-11-22 17:30:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:42,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:42,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685894703] [2024-11-22 17:30:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685894703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:42,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656505982] [2024-11-22 17:30:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:42,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:42,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:42,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 17:30:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:42,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:30:42,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:42,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656505982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:42,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:30:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893378326] [2024-11-22 17:30:42,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:42,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:30:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:30:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:30:42,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-11-22 17:30:42,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 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) [2024-11-22 17:30:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:42,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-11-22 17:30:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:42,573 INFO L124 PetriNetUnfolderBase]: 33/511 cut-off events. [2024-11-22 17:30:42,573 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-22 17:30:42,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 511 events. 33/511 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 556. Up to 56 conditions per place. [2024-11-22 17:30:42,576 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 18 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-11-22 17:30:42,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 442 flow [2024-11-22 17:30:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:30:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:30:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2024-11-22 17:30:42,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8508923431203224 [2024-11-22 17:30:42,579 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 370 flow. Second operand 9 states and 1478 transitions. [2024-11-22 17:30:42,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 442 flow [2024-11-22 17:30:42,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:42,582 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 418 flow [2024-11-22 17:30:42,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-11-22 17:30:42,583 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-11-22 17:30:42,583 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 418 flow [2024-11-22 17:30:42,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 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) [2024-11-22 17:30:42,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:42,584 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:42,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 17:30:42,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:42,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 17:30:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -196544136, now seen corresponding path program 2 times [2024-11-22 17:30:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049187999] [2024-11-22 17:30:42,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:42,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:42,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:42,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049187999] [2024-11-22 17:30:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049187999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951179909] [2024-11-22 17:30:42,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:42,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:42,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:42,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:42,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 17:30:43,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:43,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:43,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 17:30:43,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:43,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 17:30:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951179909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:43,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 17:30:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292495888] [2024-11-22 17:30:43,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:43,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 17:30:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 17:30:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:30:43,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-11-22 17:30:43,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 418 flow. Second operand has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 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) [2024-11-22 17:30:43,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:43,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-11-22 17:30:43,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:43,402 INFO L124 PetriNetUnfolderBase]: 33/550 cut-off events. [2024-11-22 17:30:43,403 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-22 17:30:43,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 550 events. 33/550 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 3/504 useless extension candidates. Maximal degree in co-relation 518. Up to 56 conditions per place. [2024-11-22 17:30:43,406 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 21 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2024-11-22 17:30:43,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 195 transitions, 570 flow [2024-11-22 17:30:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 17:30:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 17:30:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2940 transitions. [2024-11-22 17:30:43,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.846286701208981 [2024-11-22 17:30:43,411 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 418 flow. Second operand 18 states and 2940 transitions. [2024-11-22 17:30:43,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 195 transitions, 570 flow [2024-11-22 17:30:43,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:43,415 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 518 flow [2024-11-22 17:30:43,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=518, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-11-22 17:30:43,416 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-11-22 17:30:43,416 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 518 flow [2024-11-22 17:30:43,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 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) [2024-11-22 17:30:43,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:43,417 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:43,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 17:30:43,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:43,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 17:30:43,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1436573139, now seen corresponding path program 3 times [2024-11-22 17:30:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889516383] [2024-11-22 17:30:43,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 17:30:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:43,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 17:30:43,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 17:30:43,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:30:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:30:43,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:30:43,707 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-22 17:30:43,707 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-22 17:30:43,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-22 17:30:43,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-22 17:30:43,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-22 17:30:43,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 17:30:43,709 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-22 17:30:43,710 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:30:43,710 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 17:30:43,745 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 17:30:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 542 flow [2024-11-22 17:30:43,771 INFO L124 PetriNetUnfolderBase]: 24/293 cut-off events. [2024-11-22 17:30:43,772 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-22 17:30:43,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 293 events. 24/293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 753 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2024-11-22 17:30:43,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 542 flow [2024-11-22 17:30:43,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 262 transitions, 542 flow [2024-11-22 17:30:43,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:30:43,780 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;@7191490b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:30:43,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-22 17:30:43,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:30:43,784 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-22 17:30:43,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:30:43,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:43,784 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, 1] [2024-11-22 17:30:43,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-22 17:30:43,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:43,785 INFO L85 PathProgramCache]: Analyzing trace with hash -9858184, now seen corresponding path program 1 times [2024-11-22 17:30:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224206871] [2024-11-22 17:30:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:44,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224206871] [2024-11-22 17:30:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224206871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:44,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:30:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606694109] [2024-11-22 17:30:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:30:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:30:44,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:30:44,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2024-11-22 17:30:44,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 262 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 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) [2024-11-22 17:30:44,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:44,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2024-11-22 17:30:44,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:44,936 INFO L124 PetriNetUnfolderBase]: 1746/6799 cut-off events. [2024-11-22 17:30:44,937 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-11-22 17:30:44,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 6799 events. 1746/6799 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 66614 event pairs, 1368 based on Foata normal form. 1870/7599 useless extension candidates. Maximal degree in co-relation 6430. Up to 2449 conditions per place. [2024-11-22 17:30:44,998 INFO L140 encePairwiseOnDemand]: 241/262 looper letters, 33 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-11-22 17:30:44,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 568 flow [2024-11-22 17:30:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:30:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:30:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2024-11-22 17:30:45,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8129770992366412 [2024-11-22 17:30:45,002 INFO L175 Difference]: Start difference. First operand has 248 places, 262 transitions, 542 flow. Second operand 6 states and 1278 transitions. [2024-11-22 17:30:45,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 568 flow [2024-11-22 17:30:45,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 17:30:45,005 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 500 flow [2024-11-22 17:30:45,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-11-22 17:30:45,007 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-11-22 17:30:45,007 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 500 flow [2024-11-22 17:30:45,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 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) [2024-11-22 17:30:45,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:45,008 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:45,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 17:30:45,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-22 17:30:45,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1070750038, now seen corresponding path program 1 times [2024-11-22 17:30:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:45,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861285473] [2024-11-22 17:30:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861285473] [2024-11-22 17:30:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861285473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:45,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:45,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:30:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928739200] [2024-11-22 17:30:45,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:45,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:30:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:30:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:30:45,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 262 [2024-11-22 17:30:45,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2024-11-22 17:30:45,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:45,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 262 [2024-11-22 17:30:45,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:45,342 INFO L124 PetriNetUnfolderBase]: 283/2441 cut-off events. [2024-11-22 17:30:45,342 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-22 17:30:45,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 2441 events. 283/2441 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20042 event pairs, 220 based on Foata normal form. 1/2187 useless extension candidates. Maximal degree in co-relation 2866. Up to 381 conditions per place. [2024-11-22 17:30:45,360 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 19 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-22 17:30:45,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 546 flow [2024-11-22 17:30:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:30:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:30:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-11-22 17:30:45,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791348600508906 [2024-11-22 17:30:45,362 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 500 flow. Second operand 3 states and 691 transitions. [2024-11-22 17:30:45,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 546 flow [2024-11-22 17:30:45,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:30:45,366 INFO L231 Difference]: Finished difference. Result has 240 places, 238 transitions, 502 flow [2024-11-22 17:30:45,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=240, PETRI_TRANSITIONS=238} [2024-11-22 17:30:45,367 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-11-22 17:30:45,367 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 238 transitions, 502 flow [2024-11-22 17:30:45,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2024-11-22 17:30:45,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:45,368 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:45,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 17:30:45,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-22 17:30:45,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2021498603, now seen corresponding path program 1 times [2024-11-22 17:30:45,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048236005] [2024-11-22 17:30:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:45,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048236005] [2024-11-22 17:30:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048236005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212335459] [2024-11-22 17:30:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:45,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:45,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 17:30:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:45,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:30:45,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:45,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212335459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:45,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:30:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333996577] [2024-11-22 17:30:45,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:45,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:30:45,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:30:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:30:45,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-11-22 17:30:45,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 238 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 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) [2024-11-22 17:30:45,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:45,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-11-22 17:30:45,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:45,994 INFO L124 PetriNetUnfolderBase]: 283/2456 cut-off events. [2024-11-22 17:30:45,995 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-22 17:30:46,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2456 events. 283/2456 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19940 event pairs, 220 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 2901. Up to 381 conditions per place. [2024-11-22 17:30:46,016 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 23 selfloop transitions, 9 changer transitions 0/246 dead transitions. [2024-11-22 17:30:46,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 584 flow [2024-11-22 17:30:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:30:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:30:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2014 transitions. [2024-11-22 17:30:46,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8541136556403732 [2024-11-22 17:30:46,019 INFO L175 Difference]: Start difference. First operand has 240 places, 238 transitions, 502 flow. Second operand 9 states and 2014 transitions. [2024-11-22 17:30:46,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 584 flow [2024-11-22 17:30:46,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:46,025 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 550 flow [2024-11-22 17:30:46,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2024-11-22 17:30:46,026 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-11-22 17:30:46,026 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 550 flow [2024-11-22 17:30:46,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 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) [2024-11-22 17:30:46,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:46,027 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:46,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 17:30:46,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 17:30:46,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-22 17:30:46,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash 646975819, now seen corresponding path program 2 times [2024-11-22 17:30:46,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:46,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696194275] [2024-11-22 17:30:46,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:46,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:46,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696194275] [2024-11-22 17:30:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696194275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604384137] [2024-11-22 17:30:46,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:30:46,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:46,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:46,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 17:30:46,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:30:46,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:30:46,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 17:30:46,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:46,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 17:30:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604384137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:46,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:46,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 17:30:46,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431952610] [2024-11-22 17:30:46,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:46,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 17:30:46,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:46,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 17:30:46,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:30:46,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-11-22 17:30:46,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 550 flow. Second operand has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 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) [2024-11-22 17:30:46,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:46,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-11-22 17:30:46,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:47,038 INFO L124 PetriNetUnfolderBase]: 283/2495 cut-off events. [2024-11-22 17:30:47,039 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-22 17:30:47,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2495 events. 283/2495 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19938 event pairs, 220 based on Foata normal form. 3/2243 useless extension candidates. Maximal degree in co-relation 2863. Up to 381 conditions per place. [2024-11-22 17:30:47,064 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 26 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-11-22 17:30:47,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 258 transitions, 712 flow [2024-11-22 17:30:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 17:30:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 17:30:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4007 transitions. [2024-11-22 17:30:47,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496607294317218 [2024-11-22 17:30:47,071 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 550 flow. Second operand 18 states and 4007 transitions. [2024-11-22 17:30:47,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 258 transitions, 712 flow [2024-11-22 17:30:47,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 17:30:47,075 INFO L231 Difference]: Finished difference. Result has 270 places, 254 transitions, 650 flow [2024-11-22 17:30:47,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=650, PETRI_PLACES=270, PETRI_TRANSITIONS=254} [2024-11-22 17:30:47,076 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-11-22 17:30:47,076 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 254 transitions, 650 flow [2024-11-22 17:30:47,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 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) [2024-11-22 17:30:47,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:47,077 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:47,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 17:30:47,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:47,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-22 17:30:47,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1702814602, now seen corresponding path program 3 times [2024-11-22 17:30:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36159001] [2024-11-22 17:30:47,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 17:30:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:47,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 17:30:47,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 17:30:47,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:30:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:30:47,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:30:47,362 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:30:47,362 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-22 17:30:47,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-22 17:30:47,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-22 17:30:47,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-22 17:30:47,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-22 17:30:47,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-22 17:30:47,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-22 17:30:47,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-22 17:30:47,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-22 17:30:47,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 17:30:47,364 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-22 17:30:47,365 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:30:47,365 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 17:30:47,392 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 17:30:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 331 transitions, 690 flow [2024-11-22 17:30:47,446 INFO L124 PetriNetUnfolderBase]: 31/373 cut-off events. [2024-11-22 17:30:47,446 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 17:30:47,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 373 events. 31/373 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1155 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 301. Up to 10 conditions per place. [2024-11-22 17:30:47,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 331 transitions, 690 flow [2024-11-22 17:30:47,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 331 transitions, 690 flow [2024-11-22 17:30:47,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:30:47,454 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;@7191490b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:30:47,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-22 17:30:47,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:30:47,456 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-22 17:30:47,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:30:47,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:47,457 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, 1] [2024-11-22 17:30:47,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:30:47,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash 176783715, now seen corresponding path program 1 times [2024-11-22 17:30:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:47,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832876167] [2024-11-22 17:30:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:47,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:47,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:47,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832876167] [2024-11-22 17:30:47,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832876167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:47,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:47,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:30:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317559606] [2024-11-22 17:30:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:47,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:30:47,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:30:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:30:47,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 331 [2024-11-22 17:30:47,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 331 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-11-22 17:30:47,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:47,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 331 [2024-11-22 17:30:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:56,127 INFO L124 PetriNetUnfolderBase]: 23093/67620 cut-off events. [2024-11-22 17:30:56,127 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-11-22 17:30:56,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101042 conditions, 67620 events. 23093/67620 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 896187 event pairs, 18864 based on Foata normal form. 20917/78635 useless extension candidates. Maximal degree in co-relation 60574. Up to 29414 conditions per place. [2024-11-22 17:30:56,931 INFO L140 encePairwiseOnDemand]: 306/331 looper letters, 42 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2024-11-22 17:30:56,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 300 transitions, 722 flow [2024-11-22 17:30:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:30:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:30:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-11-22 17:30:56,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8162134944612286 [2024-11-22 17:30:56,934 INFO L175 Difference]: Start difference. First operand has 313 places, 331 transitions, 690 flow. Second operand 6 states and 1621 transitions. [2024-11-22 17:30:56,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 300 transitions, 722 flow [2024-11-22 17:30:56,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 300 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-22 17:30:56,939 INFO L231 Difference]: Finished difference. Result has 305 places, 300 transitions, 632 flow [2024-11-22 17:30:56,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=305, PETRI_TRANSITIONS=300} [2024-11-22 17:30:56,940 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-11-22 17:30:56,941 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 300 transitions, 632 flow [2024-11-22 17:30:56,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-11-22 17:30:56,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:56,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:30:56,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 17:30:56,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:30:56,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 388618173, now seen corresponding path program 1 times [2024-11-22 17:30:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796950289] [2024-11-22 17:30:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:56,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796950289] [2024-11-22 17:30:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796950289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:30:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:30:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:30:56,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937024423] [2024-11-22 17:30:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:30:56,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:30:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:30:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:30:57,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 331 [2024-11-22 17:30:57,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 300 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-22 17:30:57,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:57,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 331 [2024-11-22 17:30:57,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:30:58,699 INFO L124 PetriNetUnfolderBase]: 2033/12666 cut-off events. [2024-11-22 17:30:58,699 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-22 17:30:58,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 12666 events. 2033/12666 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149755 event pairs, 1720 based on Foata normal form. 1/11381 useless extension candidates. Maximal degree in co-relation 15591. Up to 2506 conditions per place. [2024-11-22 17:30:58,854 INFO L140 encePairwiseOnDemand]: 328/331 looper letters, 24 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2024-11-22 17:30:58,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 301 transitions, 688 flow [2024-11-22 17:30:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:30:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:30:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2024-11-22 17:30:58,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879154078549849 [2024-11-22 17:30:58,856 INFO L175 Difference]: Start difference. First operand has 305 places, 300 transitions, 632 flow. Second operand 3 states and 873 transitions. [2024-11-22 17:30:58,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 301 transitions, 688 flow [2024-11-22 17:30:58,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 301 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:30:58,865 INFO L231 Difference]: Finished difference. Result has 303 places, 301 transitions, 634 flow [2024-11-22 17:30:58,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=303, PETRI_TRANSITIONS=301} [2024-11-22 17:30:58,867 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-11-22 17:30:58,867 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 301 transitions, 634 flow [2024-11-22 17:30:58,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-22 17:30:58,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:30:58,867 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, 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, 1, 1] [2024-11-22 17:30:58,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 17:30:58,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:30:58,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:30:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash 748736817, now seen corresponding path program 1 times [2024-11-22 17:30:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:30:58,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717857622] [2024-11-22 17:30:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:30:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:30:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717857622] [2024-11-22 17:30:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717857622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:30:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506514164] [2024-11-22 17:30:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:30:58,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:30:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:30:58,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:30:58,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 17:30:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:30:59,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:30:59,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:30:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:59,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:30:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:30:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506514164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:30:59,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:30:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:30:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602803265] [2024-11-22 17:30:59,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:30:59,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:30:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:30:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:30:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:30:59,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-11-22 17:30:59,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 301 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 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) [2024-11-22 17:30:59,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:30:59,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-11-22 17:30:59,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:31:01,084 INFO L124 PetriNetUnfolderBase]: 2033/12681 cut-off events. [2024-11-22 17:31:01,084 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-22 17:31:01,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 12681 events. 2033/12681 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149708 event pairs, 1720 based on Foata normal form. 2/11397 useless extension candidates. Maximal degree in co-relation 15626. Up to 2506 conditions per place. [2024-11-22 17:31:01,192 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 28 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2024-11-22 17:31:01,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 726 flow [2024-11-22 17:31:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:31:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:31:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2550 transitions. [2024-11-22 17:31:01,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8559919436052367 [2024-11-22 17:31:01,195 INFO L175 Difference]: Start difference. First operand has 303 places, 301 transitions, 634 flow. Second operand 9 states and 2550 transitions. [2024-11-22 17:31:01,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 726 flow [2024-11-22 17:31:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:31:01,201 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 682 flow [2024-11-22 17:31:01,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2024-11-22 17:31:01,201 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 0 predicate places. [2024-11-22 17:31:01,201 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 682 flow [2024-11-22 17:31:01,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 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) [2024-11-22 17:31:01,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:31:01,203 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2024-11-22 17:31:01,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 17:31:01,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:31:01,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:31:01,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:31:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1736235855, now seen corresponding path program 2 times [2024-11-22 17:31:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:31:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931151094] [2024-11-22 17:31:01,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:31:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:31:01,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:31:01,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:31:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 17:31:01,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:31:01,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931151094] [2024-11-22 17:31:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931151094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:31:01,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:31:01,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:31:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959135897] [2024-11-22 17:31:01,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:31:01,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:31:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:31:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:31:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:31:01,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2024-11-22 17:31:01,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 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) [2024-11-22 17:31:01,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:31:01,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2024-11-22 17:31:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:31:05,260 INFO L124 PetriNetUnfolderBase]: 6000/23864 cut-off events. [2024-11-22 17:31:05,261 INFO L125 PetriNetUnfolderBase]: For 2301/2301 co-relation queries the response was YES. [2024-11-22 17:31:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 23864 events. 6000/23864 cut-off events. For 2301/2301 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 297360 event pairs, 2095 based on Foata normal form. 0/21342 useless extension candidates. Maximal degree in co-relation 33009. Up to 3186 conditions per place. [2024-11-22 17:31:05,648 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 90 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2024-11-22 17:31:05,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 366 transitions, 1050 flow [2024-11-22 17:31:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:31:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:31:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1728 transitions. [2024-11-22 17:31:05,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700906344410876 [2024-11-22 17:31:05,650 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 682 flow. Second operand 6 states and 1728 transitions. [2024-11-22 17:31:05,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 366 transitions, 1050 flow [2024-11-22 17:31:05,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 366 transitions, 1044 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 17:31:05,658 INFO L231 Difference]: Finished difference. Result has 316 places, 306 transitions, 684 flow [2024-11-22 17:31:05,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=316, PETRI_TRANSITIONS=306} [2024-11-22 17:31:05,658 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 3 predicate places. [2024-11-22 17:31:05,659 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 306 transitions, 684 flow [2024-11-22 17:31:05,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 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) [2024-11-22 17:31:05,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:31:05,659 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:31:05,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 17:31:05,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:31:05,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:31:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1461545599, now seen corresponding path program 1 times [2024-11-22 17:31:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:31:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781166337] [2024-11-22 17:31:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:31:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:31:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:31:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 17:31:05,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:31:05,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781166337] [2024-11-22 17:31:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781166337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:31:05,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459871493] [2024-11-22 17:31:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:31:05,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:31:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:31:05,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:31:05,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 17:31:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:31:05,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 17:31:05,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:31:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 17:31:05,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:31:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 17:31:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459871493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:31:06,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:31:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 17:31:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239846879] [2024-11-22 17:31:06,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:31:06,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 17:31:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:31:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 17:31:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:31:06,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-11-22 17:31:06,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 306 transitions, 684 flow. Second operand has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 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) [2024-11-22 17:31:06,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:31:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-11-22 17:31:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:31:08,320 INFO L124 PetriNetUnfolderBase]: 2033/12719 cut-off events. [2024-11-22 17:31:08,320 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2024-11-22 17:31:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 12719 events. 2033/12719 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149693 event pairs, 1720 based on Foata normal form. 3/11437 useless extension candidates. Maximal degree in co-relation 15592. Up to 2506 conditions per place. [2024-11-22 17:31:08,503 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 31 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-11-22 17:31:08,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 850 flow [2024-11-22 17:31:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 17:31:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 17:31:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5074 transitions. [2024-11-22 17:31:08,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516280631084256 [2024-11-22 17:31:08,508 INFO L175 Difference]: Start difference. First operand has 316 places, 306 transitions, 684 flow. Second operand 18 states and 5074 transitions. [2024-11-22 17:31:08,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 850 flow [2024-11-22 17:31:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 840 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:31:08,518 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 780 flow [2024-11-22 17:31:08,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-11-22 17:31:08,519 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 19 predicate places. [2024-11-22 17:31:08,519 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 780 flow [2024-11-22 17:31:08,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 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) [2024-11-22 17:31:08,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:31:08,521 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:31:08,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 17:31:08,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:31:08,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-22 17:31:08,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:31:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -792654581, now seen corresponding path program 2 times [2024-11-22 17:31:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:31:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505823028] [2024-11-22 17:31:08,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:31:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:31:08,760 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:31:08,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 17:31:08,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:31:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:31:08,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:31:08,800 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:31:08,800 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-22 17:31:08,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-22 17:31:08,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-22 17:31:08,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-22 17:31:08,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-22 17:31:08,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-22 17:31:08,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-22 17:31:08,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 17:31:08,804 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-22 17:31:08,806 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:31:08,806 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-22 17:31:08,840 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 17:31:08,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 400 transitions, 840 flow [2024-11-22 17:31:08,886 INFO L124 PetriNetUnfolderBase]: 38/453 cut-off events. [2024-11-22 17:31:08,886 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-22 17:31:08,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 453 events. 38/453 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1560 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2024-11-22 17:31:08,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 400 transitions, 840 flow [2024-11-22 17:31:08,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 400 transitions, 840 flow [2024-11-22 17:31:08,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:31:08,898 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;@7191490b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:31:08,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-22 17:31:08,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:31:08,900 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-22 17:31:08,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:31:08,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:31:08,901 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, 1] [2024-11-22 17:31:08,901 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-22 17:31:08,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:31:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1842639091, now seen corresponding path program 1 times [2024-11-22 17:31:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:31:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175405264] [2024-11-22 17:31:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:31:08,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:31:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:31:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:31:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:31:09,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175405264] [2024-11-22 17:31:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175405264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:31:09,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:31:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:31:09,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498270314] [2024-11-22 17:31:09,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:31:09,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:31:09,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:31:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:31:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:31:09,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 400 [2024-11-22 17:31:09,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 400 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2024-11-22 17:31:09,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:31:09,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 400 [2024-11-22 17:31:09,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand