./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:11:37,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:11:37,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:11:37,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:11:37,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:11:37,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:11:37,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:11:37,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:11:37,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:11:37,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:11:37,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:11:37,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:11:37,364 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:11:37,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:11:37,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:11:37,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:11:37,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:11:37,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:11:37,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:11:37,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:11:37,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:11:37,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:11:37,369 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:11:37,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:11:37,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:11:37,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:11:37,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:11:37,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:11:37,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:11:37,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:11:37,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:11:37,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:37,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:11:37,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:11:37,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:11:37,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:11:37,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:11:37,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:11:37,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:11:37,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:11:37,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:11:37,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2024-10-11 17:11:37,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:11:37,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:11:37,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:11:37,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:11:37,615 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:11:37,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-10-11 17:11:38,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:11:39,220 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:11:39,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-10-11 17:11:39,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dcf5b9410/5aeb1039b2f54a58932abc48c2f3ef92/FLAG5519cbfde [2024-10-11 17:11:39,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dcf5b9410/5aeb1039b2f54a58932abc48c2f3ef92 [2024-10-11 17:11:39,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:11:39,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:11:39,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:39,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:11:39,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:11:39,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:39,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750356be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39, skipping insertion in model container [2024-10-11 17:11:39,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:39,300 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:11:39,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:39,752 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:11:39,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:39,931 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:11:39,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39 WrapperNode [2024-10-11 17:11:39,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:39,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:39,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:11:39,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:11:39,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:39,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,010 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 389 [2024-10-11 17:11:40,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:40,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:11:40,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:11:40,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:11:40,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:11:40,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:11:40,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:11:40,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:11:40,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (1/1) ... [2024-10-11 17:11:40,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:40,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:11:40,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:11:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:11:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:11:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:11:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:11:40,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:11:40,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:11:40,164 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:11:40,315 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:11:40,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:11:40,746 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:11:40,749 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:11:40,785 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:11:40,785 INFO L314 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-11 17:11:40,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:11:40 BoogieIcfgContainer [2024-10-11 17:11:40,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:11:40,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:11:40,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:11:40,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:11:40,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:11:39" (1/3) ... [2024-10-11 17:11:40,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27055a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:11:40, skipping insertion in model container [2024-10-11 17:11:40,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:39" (2/3) ... [2024-10-11 17:11:40,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27055a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:11:40, skipping insertion in model container [2024-10-11 17:11:40,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:11:40" (3/3) ... [2024-10-11 17:11:40,792 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-10-11 17:11:40,804 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:11:40,804 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-10-11 17:11:40,805 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:11:40,859 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 17:11:40,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:41,176 INFO L124 PetriNetUnfolderBase]: 78/628 cut-off events. [2024-10-11 17:11:41,176 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:11:41,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 628 events. 78/628 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3425 event pairs, 0 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 354. Up to 8 conditions per place. [2024-10-11 17:11:41,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:41,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:41,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:11:41,212 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;@17d6065a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:11:41,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 17:11:41,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:11:41,220 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-11 17:11:41,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:11:41,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:41,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:41,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:41,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash 354593967, now seen corresponding path program 1 times [2024-10-11 17:11:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808087653] [2024-10-11 17:11:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808087653] [2024-10-11 17:11:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808087653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:41,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:11:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839417939] [2024-10-11 17:11:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:41,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:41,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 390 [2024-10-11 17:11:41,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 390 transitions, 787 flow. Second operand has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:41,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 390 [2024-10-11 17:11:41,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:41,959 INFO L124 PetriNetUnfolderBase]: 181/2323 cut-off events. [2024-10-11 17:11:41,959 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-10-11 17:11:41,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 2323 events. 181/2323 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19815 event pairs, 136 based on Foata normal form. 404/2527 useless extension candidates. Maximal degree in co-relation 2390. Up to 340 conditions per place. [2024-10-11 17:11:41,971 INFO L140 encePairwiseOnDemand]: 346/390 looper letters, 31 selfloop transitions, 2 changer transitions 0/344 dead transitions. [2024-10-11 17:11:41,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 344 transitions, 761 flow [2024-10-11 17:11:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2024-10-11 17:11:41,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700854700854701 [2024-10-11 17:11:41,992 INFO L175 Difference]: Start difference. First operand has 345 places, 390 transitions, 787 flow. Second operand 3 states and 1018 transitions. [2024-10-11 17:11:41,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 344 transitions, 761 flow [2024-10-11 17:11:41,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 344 transitions, 761 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:42,003 INFO L231 Difference]: Finished difference. Result has 342 places, 344 transitions, 705 flow [2024-10-11 17:11:42,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=705, PETRI_PLACES=342, PETRI_TRANSITIONS=344} [2024-10-11 17:11:42,007 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -3 predicate places. [2024-10-11 17:11:42,008 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 344 transitions, 705 flow [2024-10-11 17:11:42,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:42,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:42,009 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] [2024-10-11 17:11:42,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:11:42,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:42,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1610010690, now seen corresponding path program 1 times [2024-10-11 17:11:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:42,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102905982] [2024-10-11 17:11:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102905982] [2024-10-11 17:11:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102905982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067558893] [2024-10-11 17:11:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:42,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:42,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:42,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:42,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:11:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:42,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:11:42,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:42,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067558893] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:42,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:42,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:11:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68115619] [2024-10-11 17:11:42,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:42,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:11:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:11:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:11:42,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:42,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 344 transitions, 705 flow. Second operand has 10 states, 10 states have (on average 312.8) internal successors, (3128), 10 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:42,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:42,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:42,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:42,771 INFO L124 PetriNetUnfolderBase]: 181/2330 cut-off events. [2024-10-11 17:11:42,771 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-10-11 17:11:42,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 2330 events. 181/2330 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19744 event pairs, 136 based on Foata normal form. 2/2132 useless extension candidates. Maximal degree in co-relation 2660. Up to 340 conditions per place. [2024-10-11 17:11:42,781 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 35 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2024-10-11 17:11:42,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 352 transitions, 811 flow [2024-10-11 17:11:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:11:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:11:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2845 transitions. [2024-10-11 17:11:42,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8105413105413105 [2024-10-11 17:11:42,786 INFO L175 Difference]: Start difference. First operand has 342 places, 344 transitions, 705 flow. Second operand 9 states and 2845 transitions. [2024-10-11 17:11:42,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 352 transitions, 811 flow [2024-10-11 17:11:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 352 transitions, 809 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:42,798 INFO L231 Difference]: Finished difference. Result has 352 places, 350 transitions, 753 flow [2024-10-11 17:11:42,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=753, PETRI_PLACES=352, PETRI_TRANSITIONS=350} [2024-10-11 17:11:42,799 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 7 predicate places. [2024-10-11 17:11:42,799 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 350 transitions, 753 flow [2024-10-11 17:11:42,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 312.8) internal successors, (3128), 10 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:42,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:42,801 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-11 17:11:42,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:11:43,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:43,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:43,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 61864034, now seen corresponding path program 2 times [2024-10-11 17:11:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50566596] [2024-10-11 17:11:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:43,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50566596] [2024-10-11 17:11:43,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50566596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:43,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779293749] [2024-10-11 17:11:43,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:11:43,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:43,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:43,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:11:43,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:11:43,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:11:43,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 17:11:43,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:43,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:11:43,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:11:43,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:43,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:11:43,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:43,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:11:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:11:43,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:43,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779293749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:43,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:43,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:11:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657697237] [2024-10-11 17:11:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:43,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:11:43,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:11:43,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:11:43,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 390 [2024-10-11 17:11:43,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 350 transitions, 753 flow. Second operand has 8 states, 8 states have (on average 242.125) internal successors, (1937), 8 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:43,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:43,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 390 [2024-10-11 17:11:43,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:44,793 INFO L124 PetriNetUnfolderBase]: 2278/8749 cut-off events. [2024-10-11 17:11:44,794 INFO L125 PetriNetUnfolderBase]: For 14/17 co-relation queries the response was YES. [2024-10-11 17:11:44,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13140 conditions, 8749 events. 2278/8749 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 88785 event pairs, 1725 based on Foata normal form. 1/7989 useless extension candidates. Maximal degree in co-relation 13075. Up to 4195 conditions per place. [2024-10-11 17:11:44,832 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 162 selfloop transitions, 11 changer transitions 0/418 dead transitions. [2024-10-11 17:11:44,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 418 transitions, 1235 flow [2024-10-11 17:11:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:11:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 17:11:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2103 transitions. [2024-10-11 17:11:44,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740384615384616 [2024-10-11 17:11:44,836 INFO L175 Difference]: Start difference. First operand has 352 places, 350 transitions, 753 flow. Second operand 8 states and 2103 transitions. [2024-10-11 17:11:44,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 418 transitions, 1235 flow [2024-10-11 17:11:44,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 418 transitions, 1229 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:44,844 INFO L231 Difference]: Finished difference. Result has 363 places, 357 transitions, 814 flow [2024-10-11 17:11:44,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=363, PETRI_TRANSITIONS=357} [2024-10-11 17:11:44,845 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 18 predicate places. [2024-10-11 17:11:44,845 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 357 transitions, 814 flow [2024-10-11 17:11:44,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.125) internal successors, (1937), 8 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:44,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:44,847 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:44,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:11:45,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:45,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:45,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -140062528, now seen corresponding path program 1 times [2024-10-11 17:11:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48293617] [2024-10-11 17:11:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48293617] [2024-10-11 17:11:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48293617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:45,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102562794] [2024-10-11 17:11:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:45,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:45,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:45,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:45,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:11:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:45,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:11:45,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:45,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:45,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102562794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:45,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:45,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:11:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217929473] [2024-10-11 17:11:45,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:45,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:11:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:11:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:11:45,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:45,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 357 transitions, 814 flow. Second operand has 18 states, 18 states have (on average 312.94444444444446) internal successors, (5633), 18 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:45,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:45,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:45,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:45,912 INFO L124 PetriNetUnfolderBase]: 192/2249 cut-off events. [2024-10-11 17:11:45,912 INFO L125 PetriNetUnfolderBase]: For 33/37 co-relation queries the response was YES. [2024-10-11 17:11:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 2249 events. 192/2249 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 19122 event pairs, 138 based on Foata normal form. 4/2057 useless extension candidates. Maximal degree in co-relation 2602. Up to 341 conditions per place. [2024-10-11 17:11:45,925 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 39 selfloop transitions, 21 changer transitions 0/375 dead transitions. [2024-10-11 17:11:45,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 375 transitions, 1022 flow [2024-10-11 17:11:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:11:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:11:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6595 transitions. [2024-10-11 17:11:45,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8052503052503053 [2024-10-11 17:11:45,933 INFO L175 Difference]: Start difference. First operand has 363 places, 357 transitions, 814 flow. Second operand 21 states and 6595 transitions. [2024-10-11 17:11:45,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 375 transitions, 1022 flow [2024-10-11 17:11:45,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 375 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:11:45,938 INFO L231 Difference]: Finished difference. Result has 386 places, 370 transitions, 937 flow [2024-10-11 17:11:45,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=937, PETRI_PLACES=386, PETRI_TRANSITIONS=370} [2024-10-11 17:11:45,939 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 41 predicate places. [2024-10-11 17:11:45,940 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 370 transitions, 937 flow [2024-10-11 17:11:45,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 312.94444444444446) internal successors, (5633), 18 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:45,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:45,942 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:45,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:46,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:46,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:46,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2131183360, now seen corresponding path program 2 times [2024-10-11 17:11:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:46,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567827767] [2024-10-11 17:11:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:46,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567827767] [2024-10-11 17:11:46,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567827767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673142772] [2024-10-11 17:11:46,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:11:46,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:46,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:46,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:46,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:11:46,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:11:46,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:11:46,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 17:11:46,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:46,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 17:11:46,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:11:46,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:46,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:11:46,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:46,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:11:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-11 17:11:46,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673142772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:46,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:11:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528925811] [2024-10-11 17:11:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:46,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:11:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:11:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:11:46,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 390 [2024-10-11 17:11:46,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 370 transitions, 937 flow. Second operand has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:46,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:46,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 390 [2024-10-11 17:11:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:48,090 INFO L124 PetriNetUnfolderBase]: 2359/8962 cut-off events. [2024-10-11 17:11:48,090 INFO L125 PetriNetUnfolderBase]: For 374/378 co-relation queries the response was YES. [2024-10-11 17:11:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 8962 events. 2359/8962 cut-off events. For 374/378 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 90741 event pairs, 1820 based on Foata normal form. 29/8240 useless extension candidates. Maximal degree in co-relation 13893. Up to 4322 conditions per place. [2024-10-11 17:11:48,125 INFO L140 encePairwiseOnDemand]: 363/390 looper letters, 135 selfloop transitions, 92 changer transitions 0/486 dead transitions. [2024-10-11 17:11:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 486 transitions, 1645 flow [2024-10-11 17:11:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:11:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:11:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2024-10-11 17:11:48,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2024-10-11 17:11:48,131 INFO L175 Difference]: Start difference. First operand has 386 places, 370 transitions, 937 flow. Second operand 6 states and 1674 transitions. [2024-10-11 17:11:48,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 486 transitions, 1645 flow [2024-10-11 17:11:48,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 486 transitions, 1621 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 17:11:48,139 INFO L231 Difference]: Finished difference. Result has 390 places, 454 transitions, 1521 flow [2024-10-11 17:11:48,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1521, PETRI_PLACES=390, PETRI_TRANSITIONS=454} [2024-10-11 17:11:48,140 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 45 predicate places. [2024-10-11 17:11:48,141 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 454 transitions, 1521 flow [2024-10-11 17:11:48,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:48,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:48,142 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:48,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:11:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:48,349 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:48,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1642173509, now seen corresponding path program 1 times [2024-10-11 17:11:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900826424] [2024-10-11 17:11:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900826424] [2024-10-11 17:11:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900826424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758733043] [2024-10-11 17:11:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:48,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:48,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:11:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:48,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 17:11:48,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:48,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:48,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758733043] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:48,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:48,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-11 17:11:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964207917] [2024-10-11 17:11:48,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:48,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:11:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:11:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:11:48,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:48,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 454 transitions, 1521 flow. Second operand has 23 states, 23 states have (on average 313.04347826086956) internal successors, (7200), 23 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:48,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:48,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:49,628 INFO L124 PetriNetUnfolderBase]: 340/3019 cut-off events. [2024-10-11 17:11:49,629 INFO L125 PetriNetUnfolderBase]: For 559/627 co-relation queries the response was YES. [2024-10-11 17:11:49,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 3019 events. 340/3019 cut-off events. For 559/627 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 27461 event pairs, 136 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 4333. Up to 418 conditions per place. [2024-10-11 17:11:49,647 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 42 selfloop transitions, 30 changer transitions 0/471 dead transitions. [2024-10-11 17:11:49,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 471 transitions, 1787 flow [2024-10-11 17:11:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:11:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 17:11:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9405 transitions. [2024-10-11 17:11:49,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8038461538461539 [2024-10-11 17:11:49,660 INFO L175 Difference]: Start difference. First operand has 390 places, 454 transitions, 1521 flow. Second operand 30 states and 9405 transitions. [2024-10-11 17:11:49,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 471 transitions, 1787 flow [2024-10-11 17:11:49,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 471 transitions, 1769 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:49,670 INFO L231 Difference]: Finished difference. Result has 423 places, 464 transitions, 1655 flow [2024-10-11 17:11:49,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1655, PETRI_PLACES=423, PETRI_TRANSITIONS=464} [2024-10-11 17:11:49,671 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 78 predicate places. [2024-10-11 17:11:49,671 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 464 transitions, 1655 flow [2024-10-11 17:11:49,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 313.04347826086956) internal successors, (7200), 23 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:49,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:49,674 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:49,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:49,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:49,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:49,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1802028206, now seen corresponding path program 2 times [2024-10-11 17:11:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:49,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649266542] [2024-10-11 17:11:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:49,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:49,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:11:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:49,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:11:49,934 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:11:49,935 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-11 17:11:49,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-11 17:11:49,937 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-11 17:11:49,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-11 17:11:49,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-11 17:11:49,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-11 17:11:49,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-11 17:11:49,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-11 17:11:49,939 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-11 17:11:49,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:11:49,939 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-10-11 17:11:49,941 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:11:49,941 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 17:11:50,003 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 17:11:50,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:50,134 INFO L124 PetriNetUnfolderBase]: 126/1009 cut-off events. [2024-10-11 17:11:50,135 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 17:11:50,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 1009 events. 126/1009 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6191 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 630. Up to 12 conditions per place. [2024-10-11 17:11:50,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:50,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:50,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:11:50,162 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;@17d6065a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:11:50,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-10-11 17:11:50,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:11:50,167 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-11 17:11:50,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:11:50,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:50,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:50,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:11:50,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1380409905, now seen corresponding path program 1 times [2024-10-11 17:11:50,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:50,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764932000] [2024-10-11 17:11:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:50,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:50,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764932000] [2024-10-11 17:11:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764932000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:50,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:50,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:11:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708368597] [2024-10-11 17:11:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:50,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:50,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2024-10-11 17:11:50,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 505 transitions, 1026 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:50,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:50,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2024-10-11 17:11:50,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:52,567 INFO L124 PetriNetUnfolderBase]: 3251/22828 cut-off events. [2024-10-11 17:11:52,567 INFO L125 PetriNetUnfolderBase]: For 151/155 co-relation queries the response was YES. [2024-10-11 17:11:52,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27608 conditions, 22828 events. 3251/22828 cut-off events. For 151/155 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 311078 event pairs, 2680 based on Foata normal form. 5658/26597 useless extension candidates. Maximal degree in co-relation 24734. Up to 4707 conditions per place. [2024-10-11 17:11:52,722 INFO L140 encePairwiseOnDemand]: 448/505 looper letters, 41 selfloop transitions, 2 changer transitions 0/444 dead transitions. [2024-10-11 17:11:52,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 444 transitions, 990 flow [2024-10-11 17:11:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2024-10-11 17:11:52,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8673267326732673 [2024-10-11 17:11:52,727 INFO L175 Difference]: Start difference. First operand has 446 places, 505 transitions, 1026 flow. Second operand 3 states and 1314 transitions. [2024-10-11 17:11:52,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 444 transitions, 990 flow [2024-10-11 17:11:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 444 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:52,733 INFO L231 Difference]: Finished difference. Result has 441 places, 444 transitions, 914 flow [2024-10-11 17:11:52,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=914, PETRI_PLACES=441, PETRI_TRANSITIONS=444} [2024-10-11 17:11:52,734 INFO L277 CegarLoopForPetriNet]: 446 programPoint places, -5 predicate places. [2024-10-11 17:11:52,734 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 444 transitions, 914 flow [2024-10-11 17:11:52,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:52,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:52,735 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] [2024-10-11 17:11:52,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:11:52,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:11:52,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1875125979, now seen corresponding path program 1 times [2024-10-11 17:11:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829317934] [2024-10-11 17:11:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:52,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829317934] [2024-10-11 17:11:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829317934] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411794767] [2024-10-11 17:11:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:52,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:52,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:52,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:11:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:52,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:11:52,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:52,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411794767] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:52,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:11:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600284211] [2024-10-11 17:11:52,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:52,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:11:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:11:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:11:52,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2024-10-11 17:11:52,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 444 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 403.8) internal successors, (4038), 10 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:52,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:52,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2024-10-11 17:11:52,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:55,840 INFO L124 PetriNetUnfolderBase]: 3251/22835 cut-off events. [2024-10-11 17:11:55,841 INFO L125 PetriNetUnfolderBase]: For 152/156 co-relation queries the response was YES. [2024-10-11 17:11:55,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27634 conditions, 22835 events. 3251/22835 cut-off events. For 152/156 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 311382 event pairs, 2680 based on Foata normal form. 2/20948 useless extension candidates. Maximal degree in co-relation 27597. Up to 4707 conditions per place. [2024-10-11 17:11:55,993 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 45 selfloop transitions, 9 changer transitions 0/452 dead transitions. [2024-10-11 17:11:55,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 452 transitions, 1040 flow [2024-10-11 17:11:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:11:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:11:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3674 transitions. [2024-10-11 17:11:56,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8083608360836083 [2024-10-11 17:11:56,004 INFO L175 Difference]: Start difference. First operand has 441 places, 444 transitions, 914 flow. Second operand 9 states and 3674 transitions. [2024-10-11 17:11:56,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 452 transitions, 1040 flow [2024-10-11 17:11:56,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 452 transitions, 1038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:56,011 INFO L231 Difference]: Finished difference. Result has 451 places, 450 transitions, 962 flow [2024-10-11 17:11:56,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=962, PETRI_PLACES=451, PETRI_TRANSITIONS=450} [2024-10-11 17:11:56,012 INFO L277 CegarLoopForPetriNet]: 446 programPoint places, 5 predicate places. [2024-10-11 17:11:56,012 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 450 transitions, 962 flow [2024-10-11 17:11:56,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 403.8) internal successors, (4038), 10 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:56,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:56,016 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-11 17:11:56,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:11:56,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 17:11:56,217 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:11:56,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1739394907, now seen corresponding path program 2 times [2024-10-11 17:11:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177944901] [2024-10-11 17:11:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177944901] [2024-10-11 17:11:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177944901] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332917080] [2024-10-11 17:11:56,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:11:56,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:56,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:56,321 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:56,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:11:56,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:11:56,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:11:56,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 17:11:56,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:56,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:11:56,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:11:56,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:56,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:11:56,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:56,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:11:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:11:56,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:56,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332917080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:56,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:11:56,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109489911] [2024-10-11 17:11:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:56,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:11:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:56,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:11:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:11:56,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 505 [2024-10-11 17:11:56,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 450 transitions, 962 flow. Second operand has 8 states, 8 states have (on average 313.125) internal successors, (2505), 8 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:56,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:56,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 505 [2024-10-11 17:11:56,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand