./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.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/pthread-ext/09_fmaxsym.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 98246e94f9eda6f7b3e0bc779400b495c6030c5dbda65475908661a0361d920c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:47:31,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:47:31,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:47:31,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:47:31,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:47:31,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:47:31,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:47:31,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:47:31,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:47:31,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:47:31,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:47:31,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:47:31,900 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:47:31,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:47:31,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:47:31,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:47:31,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:47:31,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:47:31,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:47:31,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:47:31,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:47:31,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:47:31,905 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:47:31,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:47:31,906 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:47:31,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:47:31,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:47:31,910 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:47:31,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:47:31,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:47:31,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:47:31,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:31,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:47:31,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:47:31,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:47:31,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:47:31,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:47:31,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:47:31,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:47:31,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:47:31,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:47:31,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98246e94f9eda6f7b3e0bc779400b495c6030c5dbda65475908661a0361d920c [2024-10-11 16:47:32,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:47:32,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:47:32,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:47:32,182 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:47:32,182 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:47:32,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-11 16:47:33,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:47:33,930 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:47:33,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-11 16:47:33,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/918b396f4/060e54b2912a4f5da33021efb56460ac/FLAGdc2a3df53 [2024-10-11 16:47:34,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/918b396f4/060e54b2912a4f5da33021efb56460ac [2024-10-11 16:47:34,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:47:34,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:47:34,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:34,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:47:34,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:47:34,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62949d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34, skipping insertion in model container [2024-10-11 16:47:34,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:47:34,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:34,714 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:47:34,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:34,891 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:47:34,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34 WrapperNode [2024-10-11 16:47:34,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:34,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:34,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:47:34,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:47:34,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,944 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 146 [2024-10-11 16:47:34,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:34,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:47:34,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:47:34,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:47:34,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:34,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:47:34,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:47:34,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:47:34,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:47:35,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (1/1) ... [2024-10-11 16:47:35,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:35,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:35,045 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 16:47:35,051 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 16:47:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 16:47:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:47:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:47:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 16:47:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:47:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:47:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:47:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:47:35,104 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 16:47:35,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:47:35,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:47:35,534 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:47:35,534 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:47:35,638 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:47:35,639 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 16:47:35,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:35 BoogieIcfgContainer [2024-10-11 16:47:35,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:47:35,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:47:35,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:47:35,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:47:35,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:47:34" (1/3) ... [2024-10-11 16:47:35,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784688fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:35, skipping insertion in model container [2024-10-11 16:47:35,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:34" (2/3) ... [2024-10-11 16:47:35,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784688fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:35, skipping insertion in model container [2024-10-11 16:47:35,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:35" (3/3) ... [2024-10-11 16:47:35,651 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-10-11 16:47:35,664 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:47:35,664 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-10-11 16:47:35,664 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:47:35,728 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:35,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 122 transitions, 248 flow [2024-10-11 16:47:35,815 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2024-10-11 16:47:35,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:35,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 131 events. 10/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-10-11 16:47:35,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 122 transitions, 248 flow [2024-10-11 16:47:35,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 122 transitions, 248 flow [2024-10-11 16:47:35,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:35,841 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;@6ee78892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:35,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 16:47:35,856 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:35,857 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:47:35,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:35,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:35,858 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] [2024-10-11 16:47:35,859 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:47:35,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1694775151, now seen corresponding path program 1 times [2024-10-11 16:47:35,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:35,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255764702] [2024-10-11 16:47:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:36,706 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 16:47:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255764702] [2024-10-11 16:47:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255764702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:36,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:36,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632256019] [2024-10-11 16:47:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:36,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:36,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2024-10-11 16:47:36,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 16:47:36,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:36,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2024-10-11 16:47:36,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:37,020 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2024-10-11 16:47:37,021 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:47:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 105 events. 3/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 15/111 useless extension candidates. Maximal degree in co-relation 72. Up to 16 conditions per place. [2024-10-11 16:47:37,024 INFO L140 encePairwiseOnDemand]: 101/122 looper letters, 15 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2024-10-11 16:47:37,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 246 flow [2024-10-11 16:47:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2024-10-11 16:47:37,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2024-10-11 16:47:37,046 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 248 flow. Second operand 6 states and 540 transitions. [2024-10-11 16:47:37,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 246 flow [2024-10-11 16:47:37,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:37,056 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 216 flow [2024-10-11 16:47:37,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2024-10-11 16:47:37,065 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -10 predicate places. [2024-10-11 16:47:37,066 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 216 flow [2024-10-11 16:47:37,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 16:47:37,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:37,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:37,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:47:37,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:47:37,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1281997462, now seen corresponding path program 1 times [2024-10-11 16:47:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558524250] [2024-10-11 16:47:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558524250] [2024-10-11 16:47:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558524250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853026306] [2024-10-11 16:47:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:37,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:37,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:37,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 122 [2024-10-11 16:47:37,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 16:47:37,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:37,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 122 [2024-10-11 16:47:37,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:37,211 INFO L124 PetriNetUnfolderBase]: 3/117 cut-off events. [2024-10-11 16:47:37,212 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 16:47:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 117 events. 3/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2024-10-11 16:47:37,213 INFO L140 encePairwiseOnDemand]: 119/122 looper letters, 9 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-10-11 16:47:37,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 242 flow [2024-10-11 16:47:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2024-10-11 16:47:37,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8114754098360656 [2024-10-11 16:47:37,216 INFO L175 Difference]: Start difference. First operand has 106 places, 101 transitions, 216 flow. Second operand 3 states and 297 transitions. [2024-10-11 16:47:37,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 242 flow [2024-10-11 16:47:37,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 230 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:37,224 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 218 flow [2024-10-11 16:47:37,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2024-10-11 16:47:37,225 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -12 predicate places. [2024-10-11 16:47:37,225 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 218 flow [2024-10-11 16:47:37,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 16:47:37,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:37,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:37,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:47:37,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:47:37,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1158616840, now seen corresponding path program 1 times [2024-10-11 16:47:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931566813] [2024-10-11 16:47:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931566813] [2024-10-11 16:47:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931566813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147319693] [2024-10-11 16:47:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:37,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:37,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:37,346 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 16:47:37,347 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 16:47:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:37,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:37,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:37,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147319693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:37,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:37,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:37,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729843130] [2024-10-11 16:47:37,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:37,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:37,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-11 16:47:37,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 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 16:47:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-11 16:47:37,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:37,747 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2024-10-11 16:47:37,747 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 132 events. 3/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 123. Up to 11 conditions per place. [2024-10-11 16:47:37,748 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 13 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-10-11 16:47:37,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 280 flow [2024-10-11 16:47:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 852 transitions. [2024-10-11 16:47:37,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7759562841530054 [2024-10-11 16:47:37,752 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 218 flow. Second operand 9 states and 852 transitions. [2024-10-11 16:47:37,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 280 flow [2024-10-11 16:47:37,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 110 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:37,758 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 266 flow [2024-10-11 16:47:37,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-10-11 16:47:37,758 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2024-10-11 16:47:37,759 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 266 flow [2024-10-11 16:47:37,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 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 16:47:37,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:37,761 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:37,778 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 16:47:37,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:37,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:47:37,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash 163129912, now seen corresponding path program 2 times [2024-10-11 16:47:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223584129] [2024-10-11 16:47:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:38,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:38,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223584129] [2024-10-11 16:47:38,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223584129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:38,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876793934] [2024-10-11 16:47:38,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:38,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:38,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:38,190 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 16:47:38,192 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 16:47:38,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:38,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:38,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:38,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:38,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876793934] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:38,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226903983] [2024-10-11 16:47:38,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:38,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:38,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:38,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-11 16:47:38,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 266 flow. Second operand has 15 states, 15 states have (on average 94.06666666666666) internal successors, (1411), 15 states have internal predecessors, (1411), 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 16:47:38,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:38,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-11 16:47:38,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:38,859 INFO L124 PetriNetUnfolderBase]: 3/171 cut-off events. [2024-10-11 16:47:38,860 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-11 16:47:38,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 171 events. 3/171 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 3/166 useless extension candidates. Maximal degree in co-relation 180. Up to 11 conditions per place. [2024-10-11 16:47:38,861 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 16 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-10-11 16:47:38,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 122 transitions, 408 flow [2024-10-11 16:47:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2024-10-11 16:47:38,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7709471766848816 [2024-10-11 16:47:38,871 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 266 flow. Second operand 18 states and 1693 transitions. [2024-10-11 16:47:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 122 transitions, 408 flow [2024-10-11 16:47:38,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 122 transitions, 396 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:38,876 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 366 flow [2024-10-11 16:47:38,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=366, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-10-11 16:47:38,877 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 18 predicate places. [2024-10-11 16:47:38,878 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 366 flow [2024-10-11 16:47:38,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 94.06666666666666) internal successors, (1411), 15 states have internal predecessors, (1411), 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 16:47:38,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:38,879 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:38,897 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 16:47:39,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:39,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:47:39,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1242195542, now seen corresponding path program 3 times [2024-10-11 16:47:39,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645157921] [2024-10-11 16:47:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:39,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:39,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:39,203 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:39,204 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-10-11 16:47:39,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-10-11 16:47:39,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-10-11 16:47:39,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-10-11 16:47:39,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-10-11 16:47:39,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-10-11 16:47:39,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-10-11 16:47:39,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2024-10-11 16:47:39,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-10-11 16:47:39,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-10-11 16:47:39,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-10-11 16:47:39,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-10-11 16:47:39,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-10-11 16:47:39,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-10-11 16:47:39,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-10-11 16:47:39,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-10-11 16:47:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-10-11 16:47:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-10-11 16:47:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-10-11 16:47:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-10-11 16:47:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-10-11 16:47:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-10-11 16:47:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-10-11 16:47:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-10-11 16:47:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-10-11 16:47:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-10-11 16:47:39,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:47:39,217 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:39,219 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:39,219 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:47:39,255 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:39,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 195 transitions, 400 flow [2024-10-11 16:47:39,284 INFO L124 PetriNetUnfolderBase]: 17/215 cut-off events. [2024-10-11 16:47:39,284 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 215 events. 17/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 447 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 155. Up to 6 conditions per place. [2024-10-11 16:47:39,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 195 transitions, 400 flow [2024-10-11 16:47:39,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 195 transitions, 400 flow [2024-10-11 16:47:39,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:39,290 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;@6ee78892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:39,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-11 16:47:39,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:39,294 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:47:39,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:39,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:39,294 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] [2024-10-11 16:47:39,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:47:39,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash 526263316, now seen corresponding path program 1 times [2024-10-11 16:47:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:39,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773467359] [2024-10-11 16:47:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:39,514 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 16:47:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:39,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773467359] [2024-10-11 16:47:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773467359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957133983] [2024-10-11 16:47:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:39,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:39,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 195 [2024-10-11 16:47:39,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 195 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 16:47:39,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:39,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 195 [2024-10-11 16:47:39,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:39,790 INFO L124 PetriNetUnfolderBase]: 102/730 cut-off events. [2024-10-11 16:47:39,790 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:47:39,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 730 events. 102/730 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3951 event pairs, 72 based on Foata normal form. 167/785 useless extension candidates. Maximal degree in co-relation 685. Up to 185 conditions per place. [2024-10-11 16:47:39,800 INFO L140 encePairwiseOnDemand]: 162/195 looper letters, 24 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2024-10-11 16:47:39,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 388 flow [2024-10-11 16:47:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2024-10-11 16:47:39,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7410256410256411 [2024-10-11 16:47:39,803 INFO L175 Difference]: Start difference. First operand has 185 places, 195 transitions, 400 flow. Second operand 6 states and 867 transitions. [2024-10-11 16:47:39,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 388 flow [2024-10-11 16:47:39,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:39,807 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 340 flow [2024-10-11 16:47:39,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-10-11 16:47:39,808 INFO L277 CegarLoopForPetriNet]: 185 programPoint places, -20 predicate places. [2024-10-11 16:47:39,808 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 340 flow [2024-10-11 16:47:39,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 16:47:39,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:39,809 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:39,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:47:39,809 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:47:39,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash -921998220, now seen corresponding path program 1 times [2024-10-11 16:47:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355880285] [2024-10-11 16:47:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355880285] [2024-10-11 16:47:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355880285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100448633] [2024-10-11 16:47:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:39,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:39,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 195 [2024-10-11 16:47:39,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 16:47:39,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:39,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 195 [2024-10-11 16:47:39,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:39,940 INFO L124 PetriNetUnfolderBase]: 36/476 cut-off events. [2024-10-11 16:47:39,941 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-11 16:47:39,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 476 events. 36/476 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1837 event pairs, 20 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 514. Up to 63 conditions per place. [2024-10-11 16:47:39,945 INFO L140 encePairwiseOnDemand]: 192/195 looper letters, 14 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2024-10-11 16:47:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 376 flow [2024-10-11 16:47:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2024-10-11 16:47:39,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7982905982905983 [2024-10-11 16:47:39,947 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 340 flow. Second operand 3 states and 467 transitions. [2024-10-11 16:47:39,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 376 flow [2024-10-11 16:47:39,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 161 transitions, 364 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:39,951 INFO L231 Difference]: Finished difference. Result has 163 places, 161 transitions, 342 flow [2024-10-11 16:47:39,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=163, PETRI_TRANSITIONS=161} [2024-10-11 16:47:39,952 INFO L277 CegarLoopForPetriNet]: 185 programPoint places, -22 predicate places. [2024-10-11 16:47:39,953 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 161 transitions, 342 flow [2024-10-11 16:47:39,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 16:47:39,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:39,955 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:39,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:47:39,955 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:47:39,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2088985085, now seen corresponding path program 1 times [2024-10-11 16:47:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:39,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086921235] [2024-10-11 16:47:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086921235] [2024-10-11 16:47:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086921235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982770137] [2024-10-11 16:47:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:40,060 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 16:47:40,062 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 16:47:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:40,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:40,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:40,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982770137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:40,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:40,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:40,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907576568] [2024-10-11 16:47:40,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:40,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:40,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:40,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:40,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:40,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2024-10-11 16:47:40,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 161 transitions, 342 flow. Second operand has 10 states, 10 states have (on average 149.0) internal successors, (1490), 10 states have internal predecessors, (1490), 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 16:47:40,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:40,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2024-10-11 16:47:40,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:40,412 INFO L124 PetriNetUnfolderBase]: 36/491 cut-off events. [2024-10-11 16:47:40,413 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 16:47:40,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 491 events. 36/491 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1811 event pairs, 20 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 549. Up to 63 conditions per place. [2024-10-11 16:47:40,416 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 18 selfloop transitions, 9 changer transitions 0/169 dead transitions. [2024-10-11 16:47:40,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 169 transitions, 414 flow [2024-10-11 16:47:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1352 transitions. [2024-10-11 16:47:40,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2024-10-11 16:47:40,420 INFO L175 Difference]: Start difference. First operand has 163 places, 161 transitions, 342 flow. Second operand 9 states and 1352 transitions. [2024-10-11 16:47:40,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 169 transitions, 414 flow [2024-10-11 16:47:40,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 169 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:40,423 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 390 flow [2024-10-11 16:47:40,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=390, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2024-10-11 16:47:40,424 INFO L277 CegarLoopForPetriNet]: 185 programPoint places, -12 predicate places. [2024-10-11 16:47:40,424 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 390 flow [2024-10-11 16:47:40,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 149.0) internal successors, (1490), 10 states have internal predecessors, (1490), 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 16:47:40,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:40,425 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:40,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 16:47:40,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:40,626 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:47:40,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash -824903261, now seen corresponding path program 2 times [2024-10-11 16:47:40,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:40,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799081196] [2024-10-11 16:47:40,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:40,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799081196] [2024-10-11 16:47:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799081196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306928742] [2024-10-11 16:47:40,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:40,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:40,760 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 16:47:40,762 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 16:47:40,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:40,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:40,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:40,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306928742] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:41,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005318589] [2024-10-11 16:47:41,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:41,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2024-10-11 16:47:41,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 390 flow. Second operand has 15 states, 15 states have (on average 149.13333333333333) internal successors, (2237), 15 states have internal predecessors, (2237), 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 16:47:41,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:41,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2024-10-11 16:47:41,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:41,365 INFO L124 PetriNetUnfolderBase]: 36/530 cut-off events. [2024-10-11 16:47:41,365 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-11 16:47:41,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 530 events. 36/530 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1814 event pairs, 20 based on Foata normal form. 3/474 useless extension candidates. Maximal degree in co-relation 511. Up to 63 conditions per place. [2024-10-11 16:47:41,369 INFO L140 encePairwiseOnDemand]: 189/195 looper letters, 21 selfloop transitions, 18 changer transitions 0/181 dead transitions. [2024-10-11 16:47:41,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 181 transitions, 542 flow [2024-10-11 16:47:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2688 transitions. [2024-10-11 16:47:41,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7658119658119659 [2024-10-11 16:47:41,376 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 390 flow. Second operand 18 states and 2688 transitions. [2024-10-11 16:47:41,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 181 transitions, 542 flow [2024-10-11 16:47:41,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 181 transitions, 530 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:41,380 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 490 flow [2024-10-11 16:47:41,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=490, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2024-10-11 16:47:41,381 INFO L277 CegarLoopForPetriNet]: 185 programPoint places, 8 predicate places. [2024-10-11 16:47:41,381 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 490 flow [2024-10-11 16:47:41,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.13333333333333) internal successors, (2237), 15 states have internal predecessors, (2237), 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 16:47:41,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:41,382 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:41,400 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 16:47:41,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 16:47:41,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:47:41,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash -988412524, now seen corresponding path program 3 times [2024-10-11 16:47:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788124003] [2024-10-11 16:47:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:41,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:41,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:41,649 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:41,649 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2024-10-11 16:47:41,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2024-10-11 16:47:41,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2024-10-11 16:47:41,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2024-10-11 16:47:41,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2024-10-11 16:47:41,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2024-10-11 16:47:41,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2024-10-11 16:47:41,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2024-10-11 16:47:41,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2024-10-11 16:47:41,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:47:41,654 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:41,654 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:41,654 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:47:41,685 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:41,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 268 transitions, 554 flow [2024-10-11 16:47:41,723 INFO L124 PetriNetUnfolderBase]: 24/299 cut-off events. [2024-10-11 16:47:41,723 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:47:41,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 24/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 862 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2024-10-11 16:47:41,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 268 transitions, 554 flow [2024-10-11 16:47:41,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 268 transitions, 554 flow [2024-10-11 16:47:41,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:41,733 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;@6ee78892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:41,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-11 16:47:41,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:41,736 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:47:41,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:41,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:41,737 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] [2024-10-11 16:47:41,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2024-10-11 16:47:41,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1949626336, now seen corresponding path program 1 times [2024-10-11 16:47:41,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134658725] [2024-10-11 16:47:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:41,986 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 16:47:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134658725] [2024-10-11 16:47:41,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134658725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706227555] [2024-10-11 16:47:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:41,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:42,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 268 [2024-10-11 16:47:42,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 268 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 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 16:47:42,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:42,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 268 [2024-10-11 16:47:42,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:43,145 INFO L124 PetriNetUnfolderBase]: 1722/6993 cut-off events. [2024-10-11 16:47:43,146 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-10-11 16:47:43,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 6993 events. 1722/6993 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 70980 event pairs, 1368 based on Foata normal form. 1906/7768 useless extension candidates. Maximal degree in co-relation 6652. Up to 2449 conditions per place. [2024-10-11 16:47:43,222 INFO L140 encePairwiseOnDemand]: 223/268 looper letters, 33 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2024-10-11 16:47:43,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 219 transitions, 532 flow [2024-10-11 16:47:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1194 transitions. [2024-10-11 16:47:43,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7425373134328358 [2024-10-11 16:47:43,228 INFO L175 Difference]: Start difference. First operand has 254 places, 268 transitions, 554 flow. Second operand 6 states and 1194 transitions. [2024-10-11 16:47:43,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 219 transitions, 532 flow [2024-10-11 16:47:43,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 219 transitions, 530 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:43,233 INFO L231 Difference]: Finished difference. Result has 224 places, 219 transitions, 464 flow [2024-10-11 16:47:43,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=224, PETRI_TRANSITIONS=219} [2024-10-11 16:47:43,235 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -30 predicate places. [2024-10-11 16:47:43,235 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 219 transitions, 464 flow [2024-10-11 16:47:43,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 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 16:47:43,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:43,236 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:43,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 16:47:43,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2024-10-11 16:47:43,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1953447529, now seen corresponding path program 1 times [2024-10-11 16:47:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274483950] [2024-10-11 16:47:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:43,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:43,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274483950] [2024-10-11 16:47:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274483950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:43,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302788222] [2024-10-11 16:47:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:43,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:43,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 268 [2024-10-11 16:47:43,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 219 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 16:47:43,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:43,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 268 [2024-10-11 16:47:43,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:43,722 INFO L124 PetriNetUnfolderBase]: 320/2413 cut-off events. [2024-10-11 16:47:43,722 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-11 16:47:43,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 2413 events. 320/2413 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19418 event pairs, 220 based on Foata normal form. 1/2054 useless extension candidates. Maximal degree in co-relation 2917. Up to 454 conditions per place. [2024-10-11 16:47:43,741 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 19 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2024-10-11 16:47:43,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 510 flow [2024-10-11 16:47:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2024-10-11 16:47:43,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7922885572139303 [2024-10-11 16:47:43,744 INFO L175 Difference]: Start difference. First operand has 224 places, 219 transitions, 464 flow. Second operand 3 states and 637 transitions. [2024-10-11 16:47:43,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 510 flow [2024-10-11 16:47:43,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 220 transitions, 498 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:43,751 INFO L231 Difference]: Finished difference. Result has 222 places, 220 transitions, 466 flow [2024-10-11 16:47:43,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=222, PETRI_TRANSITIONS=220} [2024-10-11 16:47:43,754 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -32 predicate places. [2024-10-11 16:47:43,755 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 220 transitions, 466 flow [2024-10-11 16:47:43,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 16:47:43,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:43,755 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:43,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:47:43,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2024-10-11 16:47:43,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:43,757 INFO L85 PathProgramCache]: Analyzing trace with hash 860368390, now seen corresponding path program 1 times [2024-10-11 16:47:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:43,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411360295] [2024-10-11 16:47:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411360295] [2024-10-11 16:47:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411360295] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318839733] [2024-10-11 16:47:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:43,870 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 16:47:43,871 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 16:47:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:43,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:43,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:44,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:44,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318839733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:44,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172879253] [2024-10-11 16:47:44,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:44,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 268 [2024-10-11 16:47:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 220 transitions, 466 flow. Second operand has 10 states, 10 states have (on average 204.1) internal successors, (2041), 10 states have internal predecessors, (2041), 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 16:47:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 268 [2024-10-11 16:47:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:44,720 INFO L124 PetriNetUnfolderBase]: 320/2428 cut-off events. [2024-10-11 16:47:44,720 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-11 16:47:44,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 2428 events. 320/2428 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19404 event pairs, 220 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 2952. Up to 454 conditions per place. [2024-10-11 16:47:44,741 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 23 selfloop transitions, 9 changer transitions 0/228 dead transitions. [2024-10-11 16:47:44,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 228 transitions, 548 flow [2024-10-11 16:47:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1852 transitions. [2024-10-11 16:47:44,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7678275290215588 [2024-10-11 16:47:44,745 INFO L175 Difference]: Start difference. First operand has 222 places, 220 transitions, 466 flow. Second operand 9 states and 1852 transitions. [2024-10-11 16:47:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 228 transitions, 548 flow [2024-10-11 16:47:44,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:44,750 INFO L231 Difference]: Finished difference. Result has 232 places, 226 transitions, 514 flow [2024-10-11 16:47:44,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=232, PETRI_TRANSITIONS=226} [2024-10-11 16:47:44,751 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -22 predicate places. [2024-10-11 16:47:44,751 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 226 transitions, 514 flow [2024-10-11 16:47:44,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 204.1) internal successors, (2041), 10 states have internal predecessors, (2041), 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 16:47:44,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:44,752 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:44,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 16:47:44,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 16:47:44,953 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2024-10-11 16:47:44,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 501463782, now seen corresponding path program 2 times [2024-10-11 16:47:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:44,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3520836] [2024-10-11 16:47:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:44,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:45,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3520836] [2024-10-11 16:47:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3520836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978300846] [2024-10-11 16:47:45,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:45,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:45,090 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 16:47:45,091 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 16:47:45,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:45,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:45,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:45,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:45,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978300846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:45,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712255886] [2024-10-11 16:47:45,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:45,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:45,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 268 [2024-10-11 16:47:45,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 226 transitions, 514 flow. Second operand has 15 states, 15 states have (on average 204.2) internal successors, (3063), 15 states have internal predecessors, (3063), 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 16:47:45,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:45,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 268 [2024-10-11 16:47:45,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:45,936 INFO L124 PetriNetUnfolderBase]: 320/2467 cut-off events. [2024-10-11 16:47:45,936 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-11 16:47:45,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 2467 events. 320/2467 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19455 event pairs, 220 based on Foata normal form. 3/2110 useless extension candidates. Maximal degree in co-relation 2914. Up to 454 conditions per place. [2024-10-11 16:47:45,962 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 26 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2024-10-11 16:47:45,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 240 transitions, 676 flow [2024-10-11 16:47:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3683 transitions. [2024-10-11 16:47:45,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7634742951907131 [2024-10-11 16:47:45,972 INFO L175 Difference]: Start difference. First operand has 232 places, 226 transitions, 514 flow. Second operand 18 states and 3683 transitions. [2024-10-11 16:47:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 240 transitions, 676 flow [2024-10-11 16:47:45,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 240 transitions, 664 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:45,977 INFO L231 Difference]: Finished difference. Result has 252 places, 236 transitions, 614 flow [2024-10-11 16:47:45,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=614, PETRI_PLACES=252, PETRI_TRANSITIONS=236} [2024-10-11 16:47:45,978 INFO L277 CegarLoopForPetriNet]: 254 programPoint places, -2 predicate places. [2024-10-11 16:47:45,978 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 236 transitions, 614 flow [2024-10-11 16:47:45,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 204.2) internal successors, (3063), 15 states have internal predecessors, (3063), 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 16:47:45,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:45,980 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:45,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:46,181 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,SelfDestructingSolverStorable13 [2024-10-11 16:47:46,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2024-10-11 16:47:46,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2076550199, now seen corresponding path program 3 times [2024-10-11 16:47:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654505341] [2024-10-11 16:47:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:46,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:46,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:46,261 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (48 of 50 remaining) [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 50 remaining) [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 50 remaining) [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (45 of 50 remaining) [2024-10-11 16:47:46,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (44 of 50 remaining) [2024-10-11 16:47:46,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 50 remaining) [2024-10-11 16:47:46,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (42 of 50 remaining) [2024-10-11 16:47:46,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (41 of 50 remaining) [2024-10-11 16:47:46,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (39 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (37 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (36 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 50 remaining) [2024-10-11 16:47:46,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 50 remaining) [2024-10-11 16:47:46,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 50 remaining) [2024-10-11 16:47:46,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 50 remaining) [2024-10-11 16:47:46,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 50 remaining) [2024-10-11 16:47:46,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 50 remaining) [2024-10-11 16:47:46,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 50 remaining) [2024-10-11 16:47:46,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 50 remaining) [2024-10-11 16:47:46,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 50 remaining) [2024-10-11 16:47:46,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 50 remaining) [2024-10-11 16:47:46,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 50 remaining) [2024-10-11 16:47:46,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 16:47:46,270 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:46,271 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:46,271 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:47:46,310 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:46,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 341 transitions, 710 flow [2024-10-11 16:47:46,360 INFO L124 PetriNetUnfolderBase]: 31/383 cut-off events. [2024-10-11 16:47:46,360 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:47:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 383 events. 31/383 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1282 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 307. Up to 10 conditions per place. [2024-10-11 16:47:46,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 341 transitions, 710 flow [2024-10-11 16:47:46,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 341 transitions, 710 flow [2024-10-11 16:47:46,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:46,373 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;@6ee78892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:46,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-10-11 16:47:46,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:46,376 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:47:46,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:46,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:46,376 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] [2024-10-11 16:47:46,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:47:46,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -532509515, now seen corresponding path program 1 times [2024-10-11 16:47:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858650238] [2024-10-11 16:47:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:46,550 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 16:47:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858650238] [2024-10-11 16:47:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858650238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:46,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:46,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575930058] [2024-10-11 16:47:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:46,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:46,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 341 [2024-10-11 16:47:46,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 341 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 238.5) internal successors, (1431), 6 states have internal predecessors, (1431), 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 16:47:46,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:46,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 341 [2024-10-11 16:47:46,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:55,935 INFO L124 PetriNetUnfolderBase]: 22863/69739 cut-off events. [2024-10-11 16:47:55,935 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-10-11 16:47:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103161 conditions, 69739 events. 22863/69739 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 947079 event pairs, 18864 based on Foata normal form. 21156/80431 useless extension candidates. Maximal degree in co-relation 62452. Up to 29414 conditions per place. [2024-10-11 16:47:56,843 INFO L140 encePairwiseOnDemand]: 284/341 looper letters, 42 selfloop transitions, 5 changer transitions 0/278 dead transitions. [2024-10-11 16:47:56,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 278 transitions, 678 flow [2024-10-11 16:47:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1521 transitions. [2024-10-11 16:47:56,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7434017595307918 [2024-10-11 16:47:56,847 INFO L175 Difference]: Start difference. First operand has 323 places, 341 transitions, 710 flow. Second operand 6 states and 1521 transitions. [2024-10-11 16:47:56,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 278 transitions, 678 flow [2024-10-11 16:47:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 278 transitions, 672 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:56,858 INFO L231 Difference]: Finished difference. Result has 283 places, 278 transitions, 588 flow [2024-10-11 16:47:56,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=283, PETRI_TRANSITIONS=278} [2024-10-11 16:47:56,860 INFO L277 CegarLoopForPetriNet]: 323 programPoint places, -40 predicate places. [2024-10-11 16:47:56,860 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 278 transitions, 588 flow [2024-10-11 16:47:56,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.5) internal successors, (1431), 6 states have internal predecessors, (1431), 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 16:47:56,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:56,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:56,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 16:47:56,862 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:47:56,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2098555638, now seen corresponding path program 1 times [2024-10-11 16:47:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:56,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743748142] [2024-10-11 16:47:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:56,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:56,923 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 16:47:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743748142] [2024-10-11 16:47:56,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743748142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:56,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:56,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:56,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599719141] [2024-10-11 16:47:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:56,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:56,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 341 [2024-10-11 16:47:56,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 278 transitions, 588 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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 16:47:56,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:56,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 341 [2024-10-11 16:47:56,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:58,838 INFO L124 PetriNetUnfolderBase]: 2347/12774 cut-off events. [2024-10-11 16:47:58,838 INFO L125 PetriNetUnfolderBase]: For 630/630 co-relation queries the response was YES. [2024-10-11 16:47:58,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16310 conditions, 12774 events. 2347/12774 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 149626 event pairs, 1720 based on Foata normal form. 1/10717 useless extension candidates. Maximal degree in co-relation 16251. Up to 3052 conditions per place. [2024-10-11 16:47:58,980 INFO L140 encePairwiseOnDemand]: 338/341 looper letters, 24 selfloop transitions, 2 changer transitions 0/279 dead transitions. [2024-10-11 16:47:58,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 279 transitions, 644 flow [2024-10-11 16:47:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 807 transitions. [2024-10-11 16:47:58,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7888563049853372 [2024-10-11 16:47:58,982 INFO L175 Difference]: Start difference. First operand has 283 places, 278 transitions, 588 flow. Second operand 3 states and 807 transitions. [2024-10-11 16:47:58,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 279 transitions, 644 flow [2024-10-11 16:47:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 279 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:58,987 INFO L231 Difference]: Finished difference. Result has 281 places, 279 transitions, 590 flow [2024-10-11 16:47:58,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=281, PETRI_TRANSITIONS=279} [2024-10-11 16:47:58,988 INFO L277 CegarLoopForPetriNet]: 323 programPoint places, -42 predicate places. [2024-10-11 16:47:58,989 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 279 transitions, 590 flow [2024-10-11 16:47:58,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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 16:47:58,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:58,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:58,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 16:47:58,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:47:58,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -458923388, now seen corresponding path program 1 times [2024-10-11 16:47:58,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:58,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767752167] [2024-10-11 16:47:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:59,045 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 16:47:59,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767752167] [2024-10-11 16:47:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767752167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68760174] [2024-10-11 16:47:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:59,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:59,048 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 16:47:59,060 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 16:47:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:59,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:59,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:59,194 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 16:47:59,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:59,238 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 16:47:59,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68760174] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:59,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:59,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272106255] [2024-10-11 16:47:59,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:59,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:59,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:59,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 341 [2024-10-11 16:47:59,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 279 transitions, 590 flow. Second operand has 10 states, 10 states have (on average 258.9) internal successors, (2589), 10 states have internal predecessors, (2589), 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 16:47:59,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:59,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 341 [2024-10-11 16:47:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:01,507 INFO L124 PetriNetUnfolderBase]: 2347/12789 cut-off events. [2024-10-11 16:48:01,508 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-10-11 16:48:01,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16333 conditions, 12789 events. 2347/12789 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 149526 event pairs, 1720 based on Foata normal form. 2/10733 useless extension candidates. Maximal degree in co-relation 16286. Up to 3052 conditions per place. [2024-10-11 16:48:01,701 INFO L140 encePairwiseOnDemand]: 335/341 looper letters, 28 selfloop transitions, 9 changer transitions 0/287 dead transitions. [2024-10-11 16:48:01,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 287 transitions, 682 flow [2024-10-11 16:48:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:48:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:48:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2352 transitions. [2024-10-11 16:48:01,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7663734115347018 [2024-10-11 16:48:01,706 INFO L175 Difference]: Start difference. First operand has 281 places, 279 transitions, 590 flow. Second operand 9 states and 2352 transitions. [2024-10-11 16:48:01,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 287 transitions, 682 flow [2024-10-11 16:48:01,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 287 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:48:01,714 INFO L231 Difference]: Finished difference. Result has 291 places, 285 transitions, 638 flow [2024-10-11 16:48:01,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=291, PETRI_TRANSITIONS=285} [2024-10-11 16:48:01,715 INFO L277 CegarLoopForPetriNet]: 323 programPoint places, -32 predicate places. [2024-10-11 16:48:01,716 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 285 transitions, 638 flow [2024-10-11 16:48:01,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.9) internal successors, (2589), 10 states have internal predecessors, (2589), 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 16:48:01,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:01,718 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:01,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 16:48:01,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 16:48:01,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:48:01,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash -923458620, now seen corresponding path program 2 times [2024-10-11 16:48:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113051181] [2024-10-11 16:48:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:02,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:02,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113051181] [2024-10-11 16:48:02,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113051181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386169031] [2024-10-11 16:48:02,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:48:02,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:02,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:02,111 INFO L229 MonitoredProcess]: Starting monitored process 9 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 16:48:02,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:48:02,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:48:02,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:48:02,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 16:48:02,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:02,273 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 16:48:02,288 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 16:48:02,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:48:02,327 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 16:48:02,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:48:02,370 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 16:48:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 16:48:02,401 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:48:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386169031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:02,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:48:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-11 16:48:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340780481] [2024-10-11 16:48:02,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:02,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:48:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:48:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:48:02,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 341 [2024-10-11 16:48:02,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 285 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 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 16:48:02,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:02,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 341 [2024-10-11 16:48:02,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:06,386 INFO L124 PetriNetUnfolderBase]: 6879/23759 cut-off events. [2024-10-11 16:48:06,386 INFO L125 PetriNetUnfolderBase]: For 1725/1725 co-relation queries the response was YES. [2024-10-11 16:48:06,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34109 conditions, 23759 events. 6879/23759 cut-off events. For 1725/1725 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 281253 event pairs, 2095 based on Foata normal form. 0/20295 useless extension candidates. Maximal degree in co-relation 34005. Up to 3624 conditions per place. [2024-10-11 16:48:06,638 INFO L140 encePairwiseOnDemand]: 335/341 looper letters, 90 selfloop transitions, 5 changer transitions 0/344 dead transitions. [2024-10-11 16:48:06,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 344 transitions, 1006 flow [2024-10-11 16:48:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:48:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:48:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2024-10-11 16:48:06,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7800586510263929 [2024-10-11 16:48:06,641 INFO L175 Difference]: Start difference. First operand has 291 places, 285 transitions, 638 flow. Second operand 6 states and 1596 transitions. [2024-10-11 16:48:06,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 344 transitions, 1006 flow [2024-10-11 16:48:06,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 344 transitions, 1000 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 16:48:06,649 INFO L231 Difference]: Finished difference. Result has 294 places, 284 transitions, 640 flow [2024-10-11 16:48:06,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=294, PETRI_TRANSITIONS=284} [2024-10-11 16:48:06,650 INFO L277 CegarLoopForPetriNet]: 323 programPoint places, -29 predicate places. [2024-10-11 16:48:06,650 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 284 transitions, 640 flow [2024-10-11 16:48:06,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 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 16:48:06,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:06,655 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:06,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 16:48:06,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:06,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:48:06,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1321939218, now seen corresponding path program 1 times [2024-10-11 16:48:06,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984262922] [2024-10-11 16:48:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:06,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:07,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984262922] [2024-10-11 16:48:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984262922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:48:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651977062] [2024-10-11 16:48:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:07,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:07,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:48:07,027 INFO L229 MonitoredProcess]: Starting monitored process 10 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 16:48:07,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:48:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:07,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:48:07,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:48:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:07,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:48:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:48:07,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651977062] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:48:07,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:48:07,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:48:07,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257256554] [2024-10-11 16:48:07,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:48:07,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:48:07,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:07,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:48:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:48:07,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 341 [2024-10-11 16:48:07,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 284 transitions, 640 flow. Second operand has 15 states, 15 states have (on average 259.26666666666665) internal successors, (3889), 15 states have internal predecessors, (3889), 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 16:48:07,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:07,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 341 [2024-10-11 16:48:07,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:09,816 INFO L124 PetriNetUnfolderBase]: 2347/12788 cut-off events. [2024-10-11 16:48:09,816 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-10-11 16:48:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16581 conditions, 12788 events. 2347/12788 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 148879 event pairs, 1720 based on Foata normal form. 3/10773 useless extension candidates. Maximal degree in co-relation 16408. Up to 3052 conditions per place. [2024-10-11 16:48:09,924 INFO L140 encePairwiseOnDemand]: 335/341 looper letters, 31 selfloop transitions, 18 changer transitions 0/298 dead transitions. [2024-10-11 16:48:09,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 298 transitions, 806 flow [2024-10-11 16:48:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:48:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:48:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4678 transitions. [2024-10-11 16:48:09,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.762137504072988 [2024-10-11 16:48:09,930 INFO L175 Difference]: Start difference. First operand has 294 places, 284 transitions, 640 flow. Second operand 18 states and 4678 transitions. [2024-10-11 16:48:09,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 298 transitions, 806 flow [2024-10-11 16:48:09,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 298 transitions, 796 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:48:09,937 INFO L231 Difference]: Finished difference. Result has 310 places, 294 transitions, 736 flow [2024-10-11 16:48:09,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=736, PETRI_PLACES=310, PETRI_TRANSITIONS=294} [2024-10-11 16:48:09,938 INFO L277 CegarLoopForPetriNet]: 323 programPoint places, -13 predicate places. [2024-10-11 16:48:09,938 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 294 transitions, 736 flow [2024-10-11 16:48:09,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 259.26666666666665) internal successors, (3889), 15 states have internal predecessors, (3889), 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 16:48:09,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:09,940 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:09,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:48:10,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:48:10,142 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-11 16:48:10,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1283112060, now seen corresponding path program 2 times [2024-10-11 16:48:10,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:10,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763942471] [2024-10-11 16:48:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:10,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:10,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:48:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:10,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:48:10,202 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (61 of 62 remaining) [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (60 of 62 remaining) [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (59 of 62 remaining) [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (58 of 62 remaining) [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (57 of 62 remaining) [2024-10-11 16:48:10,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (56 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (55 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (54 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (51 of 62 remaining) [2024-10-11 16:48:10,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (50 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (49 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (48 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 62 remaining) [2024-10-11 16:48:10,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (43 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (42 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (41 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (40 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (39 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 62 remaining) [2024-10-11 16:48:10,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 62 remaining) [2024-10-11 16:48:10,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 62 remaining) [2024-10-11 16:48:10,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 62 remaining) [2024-10-11 16:48:10,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 62 remaining) [2024-10-11 16:48:10,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 62 remaining) [2024-10-11 16:48:10,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 62 remaining) [2024-10-11 16:48:10,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 62 remaining) [2024-10-11 16:48:10,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 62 remaining) [2024-10-11 16:48:10,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 62 remaining) [2024-10-11 16:48:10,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 16:48:10,212 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-11 16:48:10,213 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:48:10,213 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 16:48:10,257 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:48:10,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 414 transitions, 868 flow [2024-10-11 16:48:10,325 INFO L124 PetriNetUnfolderBase]: 38/467 cut-off events. [2024-10-11 16:48:10,325 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:48:10,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 467 events. 38/467 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1767 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2024-10-11 16:48:10,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 414 transitions, 868 flow [2024-10-11 16:48:10,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 414 transitions, 868 flow [2024-10-11 16:48:10,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:48:10,339 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;@6ee78892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:48:10,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-10-11 16:48:10,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:48:10,342 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-11 16:48:10,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:48:10,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:10,342 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] [2024-10-11 16:48:10,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2024-10-11 16:48:10,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash 482646483, now seen corresponding path program 1 times [2024-10-11 16:48:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:10,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693455385] [2024-10-11 16:48:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:10,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:10,479 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 16:48:10,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693455385] [2024-10-11 16:48:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693455385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:10,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:48:10,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:48:10,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881757334] [2024-10-11 16:48:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:10,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:48:10,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:48:10,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:48:10,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 414 [2024-10-11 16:48:10,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 414 transitions, 868 flow. Second operand has 6 states, 6 states have (on average 289.5) internal successors, (1737), 6 states have internal predecessors, (1737), 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 16:48:10,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:10,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 414 [2024-10-11 16:48:10,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand