./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-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84ca1c86e5af0d6af2b03ed7828c8cbecaeee644a88501984d187ff15cc0702f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:45:17,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:45:17,785 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:45:17,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:45:17,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:45:17,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:45:17,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:45:17,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:45:17,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:45:17,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:45:17,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:45:17,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:45:17,818 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:45:17,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:45:17,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:45:17,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:45:17,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:45:17,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:45:17,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:45:17,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:45:17,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:45:17,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:45:17,822 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:45:17,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:45:17,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:45:17,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:45:17,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:45:17,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:45:17,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:45:17,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:45:17,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:45:17,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:45:17,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:45:17,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:45:17,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:45:17,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:45:17,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:45:17,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:45:17,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:45:17,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:45:17,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:45:17,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84ca1c86e5af0d6af2b03ed7828c8cbecaeee644a88501984d187ff15cc0702f [2024-10-14 16:45:18,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:45:18,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:45:18,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:45:18,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:45:18,172 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:45:18,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-10-14 16:45:19,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:45:19,887 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:45:19,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-10-14 16:45:19,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3921f9b73/7d4b80164db14f189b339b4a5196ca6e/FLAGef0f9e327 [2024-10-14 16:45:19,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3921f9b73/7d4b80164db14f189b339b4a5196ca6e [2024-10-14 16:45:19,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:45:19,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:45:19,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:45:19,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:45:19,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:45:19,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:45:19" (1/1) ... [2024-10-14 16:45:19,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c7633c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:19, skipping insertion in model container [2024-10-14 16:45:19,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:45:19" (1/1) ... [2024-10-14 16:45:19,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:45:20,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:45:20,304 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:45:20,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:45:20,383 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:45:20,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20 WrapperNode [2024-10-14 16:45:20,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:45:20,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:45:20,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:45:20,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:45:20,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,447 INFO L138 Inliner]: procedures = 170, calls = 23, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2024-10-14 16:45:20,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:45:20,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:45:20,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:45:20,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:45:20,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:45:20,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:45:20,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:45:20,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:45:20,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (1/1) ... [2024-10-14 16:45:20,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:45:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:20,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:45:20,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:45:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 16:45:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:45:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:45:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 16:45:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:45:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:45:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:45:20,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:45:20,595 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 16:45:20,698 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:45:20,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:45:20,930 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:45:20,930 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:45:20,994 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:45:20,994 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 16:45:20,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:45:20 BoogieIcfgContainer [2024-10-14 16:45:20,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:45:20,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:45:20,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:45:21,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:45:21,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:45:19" (1/3) ... [2024-10-14 16:45:21,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c372e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:45:21, skipping insertion in model container [2024-10-14 16:45:21,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:45:20" (2/3) ... [2024-10-14 16:45:21,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c372e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:45:21, skipping insertion in model container [2024-10-14 16:45:21,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:45:20" (3/3) ... [2024-10-14 16:45:21,005 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-race.i [2024-10-14 16:45:21,025 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:45:21,025 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-10-14 16:45:21,026 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:45:21,094 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 116 transitions, 236 flow [2024-10-14 16:45:21,179 INFO L124 PetriNetUnfolderBase]: 10/125 cut-off events. [2024-10-14 16:45:21,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:21,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 10/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2024-10-14 16:45:21,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 116 transitions, 236 flow [2024-10-14 16:45:21,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 116 transitions, 236 flow [2024-10-14 16:45:21,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:21,218 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;@1ae56ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:21,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 16:45:21,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:21,236 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-14 16:45:21,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:21,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:21,237 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] [2024-10-14 16:45:21,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:21,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1917232964, now seen corresponding path program 1 times [2024-10-14 16:45:21,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983270759] [2024-10-14 16:45:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983270759] [2024-10-14 16:45:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983270759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:22,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344931110] [2024-10-14 16:45:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:22,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:22,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2024-10-14 16:45:22,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 116 transitions, 236 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) [2024-10-14 16:45:22,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:22,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2024-10-14 16:45:22,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:22,358 INFO L124 PetriNetUnfolderBase]: 3/103 cut-off events. [2024-10-14 16:45:22,362 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 16:45:22,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 103 events. 3/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 13/107 useless extension candidates. Maximal degree in co-relation 68. Up to 14 conditions per place. [2024-10-14 16:45:22,364 INFO L140 encePairwiseOnDemand]: 99/116 looper letters, 13 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-10-14 16:45:22,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 238 flow [2024-10-14 16:45:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2024-10-14 16:45:22,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7672413793103449 [2024-10-14 16:45:22,385 INFO L175 Difference]: Start difference. First operand has 110 places, 116 transitions, 236 flow. Second operand 6 states and 534 transitions. [2024-10-14 16:45:22,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 238 flow [2024-10-14 16:45:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 99 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:22,394 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 212 flow [2024-10-14 16:45:22,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2024-10-14 16:45:22,400 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, -6 predicate places. [2024-10-14 16:45:22,401 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 212 flow [2024-10-14 16:45:22,402 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) [2024-10-14 16:45:22,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:22,402 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] [2024-10-14 16:45:22,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:45:22,403 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:22,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1844288369, now seen corresponding path program 1 times [2024-10-14 16:45:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642297981] [2024-10-14 16:45:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:22,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642297981] [2024-10-14 16:45:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642297981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:22,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379603106] [2024-10-14 16:45:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:22,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:22,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:22,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2024-10-14 16:45:22,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 212 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) [2024-10-14 16:45:22,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:22,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2024-10-14 16:45:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:22,536 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-10-14 16:45:22,539 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 16:45:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 115 events. 3/115 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 84. Up to 9 conditions per place. [2024-10-14 16:45:22,540 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 7 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-14 16:45:22,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 234 flow [2024-10-14 16:45:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2024-10-14 16:45:22,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8477011494252874 [2024-10-14 16:45:22,543 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 212 flow. Second operand 3 states and 295 transitions. [2024-10-14 16:45:22,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 234 flow [2024-10-14 16:45:22,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:22,549 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 214 flow [2024-10-14 16:45:22,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-10-14 16:45:22,551 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2024-10-14 16:45:22,551 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 214 flow [2024-10-14 16:45:22,552 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) [2024-10-14 16:45:22,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:22,552 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] [2024-10-14 16:45:22,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:45:22,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:22,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1940583105, now seen corresponding path program 1 times [2024-10-14 16:45:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096024195] [2024-10-14 16:45:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:22,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:22,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096024195] [2024-10-14 16:45:22,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096024195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160976195] [2024-10-14 16:45:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:22,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:22,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:22,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:22,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:45:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:22,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:22,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:22,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160976195] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:22,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430863536] [2024-10-14 16:45:22,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:22,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:22,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2024-10-14 16:45:22,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 214 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) [2024-10-14 16:45:22,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:22,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2024-10-14 16:45:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:23,065 INFO L124 PetriNetUnfolderBase]: 3/130 cut-off events. [2024-10-14 16:45:23,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:45:23,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 130 events. 3/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 119. Up to 9 conditions per place. [2024-10-14 16:45:23,070 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 11 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2024-10-14 16:45:23,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 272 flow [2024-10-14 16:45:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 850 transitions. [2024-10-14 16:45:23,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.814176245210728 [2024-10-14 16:45:23,077 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 214 flow. Second operand 9 states and 850 transitions. [2024-10-14 16:45:23,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 272 flow [2024-10-14 16:45:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:23,082 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 262 flow [2024-10-14 16:45:23,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=262, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2024-10-14 16:45:23,085 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2024-10-14 16:45:23,085 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 262 flow [2024-10-14 16:45:23,086 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) [2024-10-14 16:45:23,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:23,086 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] [2024-10-14 16:45:23,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 16:45:23,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:23,287 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:23,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash 144322367, now seen corresponding path program 2 times [2024-10-14 16:45:23,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001685662] [2024-10-14 16:45:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:23,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:23,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001685662] [2024-10-14 16:45:23,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001685662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:23,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014940346] [2024-10-14 16:45:23,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:23,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:23,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:23,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:23,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:45:23,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:23,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:23,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:23,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:23,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:45:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014940346] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:23,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992404448] [2024-10-14 16:45:23,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:23,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:23,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:24,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2024-10-14 16:45:24,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 262 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) [2024-10-14 16:45:24,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:24,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2024-10-14 16:45:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:24,189 INFO L124 PetriNetUnfolderBase]: 3/169 cut-off events. [2024-10-14 16:45:24,189 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-14 16:45:24,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 169 events. 3/169 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 3/164 useless extension candidates. Maximal degree in co-relation 180. Up to 9 conditions per place. [2024-10-14 16:45:24,193 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 14 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-10-14 16:45:24,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 120 transitions, 400 flow [2024-10-14 16:45:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1691 transitions. [2024-10-14 16:45:24,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8098659003831418 [2024-10-14 16:45:24,199 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 262 flow. Second operand 18 states and 1691 transitions. [2024-10-14 16:45:24,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 120 transitions, 400 flow [2024-10-14 16:45:24,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 388 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:24,203 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 362 flow [2024-10-14 16:45:24,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=362, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-10-14 16:45:24,205 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 22 predicate places. [2024-10-14 16:45:24,205 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 362 flow [2024-10-14 16:45:24,206 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) [2024-10-14 16:45:24,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:24,206 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] [2024-10-14 16:45:24,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 16:45:24,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 16:45:24,411 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-14 16:45:24,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1557708431, now seen corresponding path program 3 times [2024-10-14 16:45:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54051166] [2024-10-14 16:45:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:24,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:24,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:24,523 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:24,525 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-14 16:45:24,526 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-14 16:45:24,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-14 16:45:24,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-14 16:45:24,529 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-14 16:45:24,529 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-14 16:45:24,529 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-14 16:45:24,529 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-14 16:45:24,529 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-14 16:45:24,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-14 16:45:24,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-14 16:45:24,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-14 16:45:24,530 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-14 16:45:24,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-14 16:45:24,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-14 16:45:24,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-14 16:45:24,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-14 16:45:24,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-14 16:45:24,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:45:24,533 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:24,536 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:24,536 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:45:24,599 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:24,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 376 flow [2024-10-14 16:45:24,630 INFO L124 PetriNetUnfolderBase]: 17/203 cut-off events. [2024-10-14 16:45:24,633 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:45:24,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 203 events. 17/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 406 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2024-10-14 16:45:24,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 183 transitions, 376 flow [2024-10-14 16:45:24,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 183 transitions, 376 flow [2024-10-14 16:45:24,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:24,641 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;@1ae56ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:24,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-14 16:45:24,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:24,647 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-14 16:45:24,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:24,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:24,647 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] [2024-10-14 16:45:24,648 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)] === [2024-10-14 16:45:24,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2017265971, now seen corresponding path program 1 times [2024-10-14 16:45:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323802003] [2024-10-14 16:45:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:24,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:24,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:24,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323802003] [2024-10-14 16:45:24,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323802003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:24,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:24,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:24,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995466523] [2024-10-14 16:45:24,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:24,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:25,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 183 [2024-10-14 16:45:25,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 183 transitions, 376 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) [2024-10-14 16:45:25,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:25,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 183 [2024-10-14 16:45:25,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:25,197 INFO L124 PetriNetUnfolderBase]: 68/543 cut-off events. [2024-10-14 16:45:25,198 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-14 16:45:25,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 543 events. 68/543 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2560 event pairs, 42 based on Foata normal form. 109/563 useless extension candidates. Maximal degree in co-relation 446. Up to 117 conditions per place. [2024-10-14 16:45:25,207 INFO L140 encePairwiseOnDemand]: 158/183 looper letters, 20 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2024-10-14 16:45:25,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 156 transitions, 372 flow [2024-10-14 16:45:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 855 transitions. [2024-10-14 16:45:25,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7786885245901639 [2024-10-14 16:45:25,210 INFO L175 Difference]: Start difference. First operand has 173 places, 183 transitions, 376 flow. Second operand 6 states and 855 transitions. [2024-10-14 16:45:25,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 156 transitions, 372 flow [2024-10-14 16:45:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 156 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:25,214 INFO L231 Difference]: Finished difference. Result has 161 places, 156 transitions, 332 flow [2024-10-14 16:45:25,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=161, PETRI_TRANSITIONS=156} [2024-10-14 16:45:25,216 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, -12 predicate places. [2024-10-14 16:45:25,217 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 156 transitions, 332 flow [2024-10-14 16:45:25,218 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) [2024-10-14 16:45:25,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:25,219 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] [2024-10-14 16:45:25,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:45:25,219 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)] === [2024-10-14 16:45:25,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2107998548, now seen corresponding path program 1 times [2024-10-14 16:45:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:25,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913096775] [2024-10-14 16:45:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913096775] [2024-10-14 16:45:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913096775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011458303] [2024-10-14 16:45:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:25,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:25,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2024-10-14 16:45:25,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 156 transitions, 332 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) [2024-10-14 16:45:25,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:25,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2024-10-14 16:45:25,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:25,337 INFO L124 PetriNetUnfolderBase]: 15/312 cut-off events. [2024-10-14 16:45:25,338 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 16:45:25,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 312 events. 15/312 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 892 event pairs, 6 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 305. Up to 24 conditions per place. [2024-10-14 16:45:25,341 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 10 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2024-10-14 16:45:25,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 157 transitions, 360 flow [2024-10-14 16:45:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2024-10-14 16:45:25,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.843351548269581 [2024-10-14 16:45:25,343 INFO L175 Difference]: Start difference. First operand has 161 places, 156 transitions, 332 flow. Second operand 3 states and 463 transitions. [2024-10-14 16:45:25,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 157 transitions, 360 flow [2024-10-14 16:45:25,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 348 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:25,346 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 334 flow [2024-10-14 16:45:25,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2024-10-14 16:45:25,347 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, -14 predicate places. [2024-10-14 16:45:25,348 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 334 flow [2024-10-14 16:45:25,348 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) [2024-10-14 16:45:25,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:25,348 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] [2024-10-14 16:45:25,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:45:25,349 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)] === [2024-10-14 16:45:25,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 206330469, now seen corresponding path program 1 times [2024-10-14 16:45:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690918360] [2024-10-14 16:45:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690918360] [2024-10-14 16:45:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690918360] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:25,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217498049] [2024-10-14 16:45:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:25,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:25,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:25,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:45:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:25,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:25,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:25,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217498049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:25,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501229161] [2024-10-14 16:45:25,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:25,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:25,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2024-10-14 16:45:25,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 334 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) [2024-10-14 16:45:25,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:25,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2024-10-14 16:45:25,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:25,717 INFO L124 PetriNetUnfolderBase]: 15/327 cut-off events. [2024-10-14 16:45:25,717 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 16:45:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 327 events. 15/327 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 865 event pairs, 6 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 340. Up to 24 conditions per place. [2024-10-14 16:45:25,720 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 14 selfloop transitions, 9 changer transitions 0/165 dead transitions. [2024-10-14 16:45:25,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 165 transitions, 398 flow [2024-10-14 16:45:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1348 transitions. [2024-10-14 16:45:25,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8184578020643595 [2024-10-14 16:45:25,723 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 334 flow. Second operand 9 states and 1348 transitions. [2024-10-14 16:45:25,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 165 transitions, 398 flow [2024-10-14 16:45:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:25,727 INFO L231 Difference]: Finished difference. Result has 169 places, 163 transitions, 382 flow [2024-10-14 16:45:25,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=169, PETRI_TRANSITIONS=163} [2024-10-14 16:45:25,728 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, -4 predicate places. [2024-10-14 16:45:25,728 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 163 transitions, 382 flow [2024-10-14 16:45:25,729 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) [2024-10-14 16:45:25,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:25,730 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] [2024-10-14 16:45:25,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:25,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:25,931 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)] === [2024-10-14 16:45:25,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1168619067, now seen corresponding path program 2 times [2024-10-14 16:45:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550176280] [2024-10-14 16:45:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:26,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:26,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550176280] [2024-10-14 16:45:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550176280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123652182] [2024-10-14 16:45:26,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:26,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:26,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:26,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:26,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:45:26,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:26,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:26,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:26,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:26,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 16:45:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123652182] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:26,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454919655] [2024-10-14 16:45:26,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:26,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:26,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2024-10-14 16:45:26,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 163 transitions, 382 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) [2024-10-14 16:45:26,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:26,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2024-10-14 16:45:26,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:26,664 INFO L124 PetriNetUnfolderBase]: 15/366 cut-off events. [2024-10-14 16:45:26,665 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-14 16:45:26,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 366 events. 15/366 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 875 event pairs, 6 based on Foata normal form. 3/336 useless extension candidates. Maximal degree in co-relation 302. Up to 24 conditions per place. [2024-10-14 16:45:26,668 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 17 selfloop transitions, 18 changer transitions 0/177 dead transitions. [2024-10-14 16:45:26,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 177 transitions, 526 flow [2024-10-14 16:45:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2684 transitions. [2024-10-14 16:45:26,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-10-14 16:45:26,675 INFO L175 Difference]: Start difference. First operand has 169 places, 163 transitions, 382 flow. Second operand 18 states and 2684 transitions. [2024-10-14 16:45:26,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 177 transitions, 526 flow [2024-10-14 16:45:26,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 177 transitions, 514 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:26,682 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 482 flow [2024-10-14 16:45:26,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=482, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2024-10-14 16:45:26,683 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 16 predicate places. [2024-10-14 16:45:26,684 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 482 flow [2024-10-14 16:45:26,686 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) [2024-10-14 16:45:26,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:26,686 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] [2024-10-14 16:45:26,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 16:45:26,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:26,891 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)] === [2024-10-14 16:45:26,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash -274160500, now seen corresponding path program 3 times [2024-10-14 16:45:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:26,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247306100] [2024-10-14 16:45:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:26,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:26,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:26,964 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:26,964 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-10-14 16:45:26,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-10-14 16:45:26,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-10-14 16:45:26,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-10-14 16:45:26,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-10-14 16:45:26,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-10-14 16:45:26,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-10-14 16:45:26,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-10-14 16:45:26,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-10-14 16:45:26,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-10-14 16:45:26,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-10-14 16:45:26,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-10-14 16:45:26,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-10-14 16:45:26,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-10-14 16:45:26,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-10-14 16:45:26,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:45:26,969 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:26,970 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:26,970 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:45:27,013 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:27,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:27,058 INFO L124 PetriNetUnfolderBase]: 24/281 cut-off events. [2024-10-14 16:45:27,058 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:45:27,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 24/281 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 777 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2024-10-14 16:45:27,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:27,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 250 transitions, 518 flow [2024-10-14 16:45:27,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:27,066 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;@1ae56ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:27,066 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-10-14 16:45:27,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:27,070 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-14 16:45:27,070 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:27,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:27,070 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] [2024-10-14 16:45:27,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2024-10-14 16:45:27,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:27,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2111567021, now seen corresponding path program 1 times [2024-10-14 16:45:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920095106] [2024-10-14 16:45:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:27,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920095106] [2024-10-14 16:45:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920095106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:27,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275577514] [2024-10-14 16:45:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:27,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:27,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 250 [2024-10-14 16:45:27,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 250 transitions, 518 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) [2024-10-14 16:45:27,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:27,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 250 [2024-10-14 16:45:27,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:28,075 INFO L124 PetriNetUnfolderBase]: 870/3859 cut-off events. [2024-10-14 16:45:28,075 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-10-14 16:45:28,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5278 conditions, 3859 events. 870/3859 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 34872 event pairs, 630 based on Foata normal form. 977/4109 useless extension candidates. Maximal degree in co-relation 3134. Up to 1191 conditions per place. [2024-10-14 16:45:28,119 INFO L140 encePairwiseOnDemand]: 217/250 looper letters, 27 selfloop transitions, 5 changer transitions 0/213 dead transitions. [2024-10-14 16:45:28,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 213 transitions, 508 flow [2024-10-14 16:45:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2024-10-14 16:45:28,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.784 [2024-10-14 16:45:28,122 INFO L175 Difference]: Start difference. First operand has 236 places, 250 transitions, 518 flow. Second operand 6 states and 1176 transitions. [2024-10-14 16:45:28,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 213 transitions, 508 flow [2024-10-14 16:45:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 213 transitions, 506 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:28,127 INFO L231 Difference]: Finished difference. Result has 218 places, 213 transitions, 452 flow [2024-10-14 16:45:28,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=218, PETRI_TRANSITIONS=213} [2024-10-14 16:45:28,128 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -18 predicate places. [2024-10-14 16:45:28,129 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 213 transitions, 452 flow [2024-10-14 16:45:28,129 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) [2024-10-14 16:45:28,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:28,130 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] [2024-10-14 16:45:28,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:45:28,130 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2024-10-14 16:45:28,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:28,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1002058478, now seen corresponding path program 1 times [2024-10-14 16:45:28,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236323455] [2024-10-14 16:45:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:28,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236323455] [2024-10-14 16:45:28,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236323455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:28,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:28,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:28,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507755942] [2024-10-14 16:45:28,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:28,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:28,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 250 [2024-10-14 16:45:28,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 213 transitions, 452 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) [2024-10-14 16:45:28,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 250 [2024-10-14 16:45:28,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:28,358 INFO L124 PetriNetUnfolderBase]: 69/921 cut-off events. [2024-10-14 16:45:28,359 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-14 16:45:28,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 921 events. 69/921 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5268 event pairs, 42 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 1004. Up to 87 conditions per place. [2024-10-14 16:45:28,372 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 13 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2024-10-14 16:45:28,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 214 transitions, 486 flow [2024-10-14 16:45:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2024-10-14 16:45:28,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8413333333333334 [2024-10-14 16:45:28,374 INFO L175 Difference]: Start difference. First operand has 218 places, 213 transitions, 452 flow. Second operand 3 states and 631 transitions. [2024-10-14 16:45:28,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 214 transitions, 486 flow [2024-10-14 16:45:28,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 474 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:28,378 INFO L231 Difference]: Finished difference. Result has 216 places, 214 transitions, 454 flow [2024-10-14 16:45:28,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=216, PETRI_TRANSITIONS=214} [2024-10-14 16:45:28,379 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -20 predicate places. [2024-10-14 16:45:28,379 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 214 transitions, 454 flow [2024-10-14 16:45:28,379 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) [2024-10-14 16:45:28,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:28,380 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] [2024-10-14 16:45:28,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:45:28,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2024-10-14 16:45:28,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1526574735, now seen corresponding path program 1 times [2024-10-14 16:45:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:28,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949465562] [2024-10-14 16:45:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:28,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:28,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949465562] [2024-10-14 16:45:28,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949465562] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:28,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282014383] [2024-10-14 16:45:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:28,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:28,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:28,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 16:45:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:28,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:28,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:28,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282014383] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:28,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379126308] [2024-10-14 16:45:28,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:28,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:28,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 250 [2024-10-14 16:45:28,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 214 transitions, 454 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) [2024-10-14 16:45:28,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:28,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 250 [2024-10-14 16:45:28,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:28,881 INFO L124 PetriNetUnfolderBase]: 69/936 cut-off events. [2024-10-14 16:45:28,882 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-14 16:45:28,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 936 events. 69/936 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5248 event pairs, 42 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 1039. Up to 87 conditions per place. [2024-10-14 16:45:28,896 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 17 selfloop transitions, 9 changer transitions 0/222 dead transitions. [2024-10-14 16:45:28,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 222 transitions, 524 flow [2024-10-14 16:45:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1846 transitions. [2024-10-14 16:45:28,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8204444444444444 [2024-10-14 16:45:28,901 INFO L175 Difference]: Start difference. First operand has 216 places, 214 transitions, 454 flow. Second operand 9 states and 1846 transitions. [2024-10-14 16:45:28,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 222 transitions, 524 flow [2024-10-14 16:45:28,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 222 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:28,906 INFO L231 Difference]: Finished difference. Result has 226 places, 220 transitions, 502 flow [2024-10-14 16:45:28,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=502, PETRI_PLACES=226, PETRI_TRANSITIONS=220} [2024-10-14 16:45:28,907 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -10 predicate places. [2024-10-14 16:45:28,907 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 220 transitions, 502 flow [2024-10-14 16:45:28,908 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) [2024-10-14 16:45:28,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:28,908 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] [2024-10-14 16:45:28,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:29,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 16:45:29,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2024-10-14 16:45:29,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1115609873, now seen corresponding path program 2 times [2024-10-14 16:45:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269583309] [2024-10-14 16:45:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269583309] [2024-10-14 16:45:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269583309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821647305] [2024-10-14 16:45:29,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:29,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:29,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 16:45:29,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 16:45:29,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:29,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:29,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:29,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 16:45:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821647305] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:29,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:29,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664301483] [2024-10-14 16:45:29,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:29,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:29,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:29,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 250 [2024-10-14 16:45:29,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 220 transitions, 502 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) [2024-10-14 16:45:29,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:29,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 250 [2024-10-14 16:45:29,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:30,040 INFO L124 PetriNetUnfolderBase]: 69/975 cut-off events. [2024-10-14 16:45:30,041 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-14 16:45:30,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 975 events. 69/975 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5269 event pairs, 42 based on Foata normal form. 3/869 useless extension candidates. Maximal degree in co-relation 1001. Up to 87 conditions per place. [2024-10-14 16:45:30,053 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 20 selfloop transitions, 18 changer transitions 0/234 dead transitions. [2024-10-14 16:45:30,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 234 transitions, 652 flow [2024-10-14 16:45:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3677 transitions. [2024-10-14 16:45:30,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8171111111111111 [2024-10-14 16:45:30,062 INFO L175 Difference]: Start difference. First operand has 226 places, 220 transitions, 502 flow. Second operand 18 states and 3677 transitions. [2024-10-14 16:45:30,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 234 transitions, 652 flow [2024-10-14 16:45:30,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 234 transitions, 640 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:30,067 INFO L231 Difference]: Finished difference. Result has 246 places, 230 transitions, 602 flow [2024-10-14 16:45:30,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=602, PETRI_PLACES=246, PETRI_TRANSITIONS=230} [2024-10-14 16:45:30,069 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, 10 predicate places. [2024-10-14 16:45:30,069 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 230 transitions, 602 flow [2024-10-14 16:45:30,070 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) [2024-10-14 16:45:30,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:30,071 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] [2024-10-14 16:45:30,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:30,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:30,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2024-10-14 16:45:30,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash 231465934, now seen corresponding path program 3 times [2024-10-14 16:45:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604019247] [2024-10-14 16:45:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:30,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:30,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:30,341 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 34 remaining) [2024-10-14 16:45:30,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (26 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 34 remaining) [2024-10-14 16:45:30,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 34 remaining) [2024-10-14 16:45:30,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 34 remaining) [2024-10-14 16:45:30,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 34 remaining) [2024-10-14 16:45:30,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 34 remaining) [2024-10-14 16:45:30,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 34 remaining) [2024-10-14 16:45:30,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 34 remaining) [2024-10-14 16:45:30,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 34 remaining) [2024-10-14 16:45:30,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 34 remaining) [2024-10-14 16:45:30,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 16:45:30,346 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-14 16:45:30,347 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:30,347 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:45:30,415 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:30,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 317 transitions, 662 flow [2024-10-14 16:45:30,462 INFO L124 PetriNetUnfolderBase]: 31/359 cut-off events. [2024-10-14 16:45:30,462 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:45:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 359 events. 31/359 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1154 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 289. Up to 10 conditions per place. [2024-10-14 16:45:30,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 317 transitions, 662 flow [2024-10-14 16:45:30,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 317 transitions, 662 flow [2024-10-14 16:45:30,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:30,475 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;@1ae56ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:30,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-10-14 16:45:30,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:30,478 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-14 16:45:30,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:30,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:30,478 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] [2024-10-14 16:45:30,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:30,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1634329814, now seen corresponding path program 1 times [2024-10-14 16:45:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929085480] [2024-10-14 16:45:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929085480] [2024-10-14 16:45:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929085480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764159192] [2024-10-14 16:45:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:30,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:30,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 317 [2024-10-14 16:45:30,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 317 transitions, 662 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) [2024-10-14 16:45:30,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:30,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 317 [2024-10-14 16:45:30,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:35,498 INFO L124 PetriNetUnfolderBase]: 8893/29258 cut-off events. [2024-10-14 16:45:35,498 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-10-14 16:45:35,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42332 conditions, 29258 events. 8893/29258 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 360376 event pairs, 6804 based on Foata normal form. 8612/32462 useless extension candidates. Maximal degree in co-relation 21782. Up to 11130 conditions per place. [2024-10-14 16:45:35,868 INFO L140 encePairwiseOnDemand]: 276/317 looper letters, 34 selfloop transitions, 5 changer transitions 0/270 dead transitions. [2024-10-14 16:45:35,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 270 transitions, 646 flow [2024-10-14 16:45:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1497 transitions. [2024-10-14 16:45:35,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7870662460567823 [2024-10-14 16:45:35,875 INFO L175 Difference]: Start difference. First operand has 299 places, 317 transitions, 662 flow. Second operand 6 states and 1497 transitions. [2024-10-14 16:45:35,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 270 transitions, 646 flow [2024-10-14 16:45:35,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 270 transitions, 640 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:45:35,881 INFO L231 Difference]: Finished difference. Result has 275 places, 270 transitions, 572 flow [2024-10-14 16:45:35,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=275, PETRI_TRANSITIONS=270} [2024-10-14 16:45:35,883 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, -24 predicate places. [2024-10-14 16:45:35,884 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 270 transitions, 572 flow [2024-10-14 16:45:35,884 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) [2024-10-14 16:45:35,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:35,885 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] [2024-10-14 16:45:35,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 16:45:35,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:35,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1220362920, now seen corresponding path program 1 times [2024-10-14 16:45:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452731767] [2024-10-14 16:45:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452731767] [2024-10-14 16:45:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452731767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:45:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301701748] [2024-10-14 16:45:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:35,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:45:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:45:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:45:35,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 317 [2024-10-14 16:45:35,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 270 transitions, 572 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) [2024-10-14 16:45:35,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:35,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 317 [2024-10-14 16:45:35,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:36,444 INFO L124 PetriNetUnfolderBase]: 285/2802 cut-off events. [2024-10-14 16:45:36,445 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-14 16:45:36,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 2802 events. 285/2802 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23656 event pairs, 204 based on Foata normal form. 1/2465 useless extension candidates. Maximal degree in co-relation 3209. Up to 330 conditions per place. [2024-10-14 16:45:36,501 INFO L140 encePairwiseOnDemand]: 314/317 looper letters, 16 selfloop transitions, 2 changer transitions 0/271 dead transitions. [2024-10-14 16:45:36,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 271 transitions, 612 flow [2024-10-14 16:45:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:45:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 16:45:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2024-10-14 16:45:36,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8401682439537329 [2024-10-14 16:45:36,504 INFO L175 Difference]: Start difference. First operand has 275 places, 270 transitions, 572 flow. Second operand 3 states and 799 transitions. [2024-10-14 16:45:36,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 271 transitions, 612 flow [2024-10-14 16:45:36,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 271 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:36,509 INFO L231 Difference]: Finished difference. Result has 273 places, 271 transitions, 574 flow [2024-10-14 16:45:36,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=273, PETRI_TRANSITIONS=271} [2024-10-14 16:45:36,510 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, -26 predicate places. [2024-10-14 16:45:36,510 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 271 transitions, 574 flow [2024-10-14 16:45:36,510 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) [2024-10-14 16:45:36,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:36,511 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] [2024-10-14 16:45:36,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 16:45:36,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:36,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1199320954, now seen corresponding path program 1 times [2024-10-14 16:45:36,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:36,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817759075] [2024-10-14 16:45:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817759075] [2024-10-14 16:45:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817759075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894212107] [2024-10-14 16:45:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:36,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:36,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:36,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 16:45:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:36,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 16:45:36,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:36,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894212107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:36,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:36,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 16:45:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930180494] [2024-10-14 16:45:36,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:36,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:45:36,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:45:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:45:36,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 317 [2024-10-14 16:45:36,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 271 transitions, 574 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) [2024-10-14 16:45:36,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:36,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 317 [2024-10-14 16:45:36,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:37,441 INFO L124 PetriNetUnfolderBase]: 285/2817 cut-off events. [2024-10-14 16:45:37,442 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-10-14 16:45:37,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 2817 events. 285/2817 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23458 event pairs, 204 based on Foata normal form. 2/2481 useless extension candidates. Maximal degree in co-relation 3244. Up to 330 conditions per place. [2024-10-14 16:45:37,501 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 20 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2024-10-14 16:45:37,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 279 transitions, 650 flow [2024-10-14 16:45:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:45:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 16:45:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2344 transitions. [2024-10-14 16:45:37,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8215913073957238 [2024-10-14 16:45:37,507 INFO L175 Difference]: Start difference. First operand has 273 places, 271 transitions, 574 flow. Second operand 9 states and 2344 transitions. [2024-10-14 16:45:37,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 279 transitions, 650 flow [2024-10-14 16:45:37,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 279 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:37,513 INFO L231 Difference]: Finished difference. Result has 283 places, 277 transitions, 622 flow [2024-10-14 16:45:37,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=283, PETRI_TRANSITIONS=277} [2024-10-14 16:45:37,514 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, -16 predicate places. [2024-10-14 16:45:37,514 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 277 transitions, 622 flow [2024-10-14 16:45:37,515 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) [2024-10-14 16:45:37,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:37,516 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] [2024-10-14 16:45:37,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:37,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:37,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:37,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1616113722, now seen corresponding path program 2 times [2024-10-14 16:45:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:37,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716644597] [2024-10-14 16:45:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716644597] [2024-10-14 16:45:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716644597] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526302056] [2024-10-14 16:45:37,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:45:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:37,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:37,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 16:45:38,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:45:38,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:45:38,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 16:45:38,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:38,066 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 [2024-10-14 16:45:38,086 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 [2024-10-14 16:45:38,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 16:45:38,119 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 [2024-10-14 16:45:38,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 16:45:38,159 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 [2024-10-14 16:45:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-14 16:45:38,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:45:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526302056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:38,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:45:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-14 16:45:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001165776] [2024-10-14 16:45:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:38,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:45:38,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 317 [2024-10-14 16:45:38,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 277 transitions, 622 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) [2024-10-14 16:45:38,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:38,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 317 [2024-10-14 16:45:38,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:39,791 INFO L124 PetriNetUnfolderBase]: 1212/7202 cut-off events. [2024-10-14 16:45:39,791 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-10-14 16:45:39,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 7202 events. 1212/7202 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 76738 event pairs, 447 based on Foata normal form. 0/6272 useless extension candidates. Maximal degree in co-relation 9189. Up to 701 conditions per place. [2024-10-14 16:45:39,930 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 58 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2024-10-14 16:45:39,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 312 transitions, 878 flow [2024-10-14 16:45:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:45:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 16:45:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1564 transitions. [2024-10-14 16:45:39,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8222923238696109 [2024-10-14 16:45:39,933 INFO L175 Difference]: Start difference. First operand has 283 places, 277 transitions, 622 flow. Second operand 6 states and 1564 transitions. [2024-10-14 16:45:39,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 312 transitions, 878 flow [2024-10-14 16:45:39,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 312 transitions, 872 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 16:45:39,943 INFO L231 Difference]: Finished difference. Result has 286 places, 276 transitions, 624 flow [2024-10-14 16:45:39,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=286, PETRI_TRANSITIONS=276} [2024-10-14 16:45:39,944 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, -13 predicate places. [2024-10-14 16:45:39,944 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 276 transitions, 624 flow [2024-10-14 16:45:39,945 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) [2024-10-14 16:45:39,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:39,945 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] [2024-10-14 16:45:39,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:40,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:40,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:40,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash -415769272, now seen corresponding path program 1 times [2024-10-14 16:45:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:40,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134118467] [2024-10-14 16:45:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:40,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:40,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134118467] [2024-10-14 16:45:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134118467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:45:40,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141290311] [2024-10-14 16:45:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:40,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:45:40,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:45:40,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 16:45:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:40,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:45:40,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:45:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:40,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:45:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-14 16:45:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141290311] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:45:40,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:45:40,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 16:45:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727962078] [2024-10-14 16:45:40,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:45:40,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 16:45:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 16:45:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:45:40,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 317 [2024-10-14 16:45:40,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 276 transitions, 624 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) [2024-10-14 16:45:40,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:40,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 317 [2024-10-14 16:45:40,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:45:41,460 INFO L124 PetriNetUnfolderBase]: 285/2855 cut-off events. [2024-10-14 16:45:41,460 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-10-14 16:45:41,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 2855 events. 285/2855 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23527 event pairs, 204 based on Foata normal form. 3/2521 useless extension candidates. Maximal degree in co-relation 3210. Up to 330 conditions per place. [2024-10-14 16:45:41,512 INFO L140 encePairwiseOnDemand]: 311/317 looper letters, 23 selfloop transitions, 18 changer transitions 0/290 dead transitions. [2024-10-14 16:45:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 290 transitions, 774 flow [2024-10-14 16:45:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 16:45:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 16:45:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4670 transitions. [2024-10-14 16:45:41,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8184367332632316 [2024-10-14 16:45:41,520 INFO L175 Difference]: Start difference. First operand has 286 places, 276 transitions, 624 flow. Second operand 18 states and 4670 transitions. [2024-10-14 16:45:41,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 290 transitions, 774 flow [2024-10-14 16:45:41,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 290 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 16:45:41,528 INFO L231 Difference]: Finished difference. Result has 302 places, 286 transitions, 720 flow [2024-10-14 16:45:41,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=720, PETRI_PLACES=302, PETRI_TRANSITIONS=286} [2024-10-14 16:45:41,529 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, 3 predicate places. [2024-10-14 16:45:41,529 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 286 transitions, 720 flow [2024-10-14 16:45:41,531 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) [2024-10-14 16:45:41,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:41,531 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] [2024-10-14 16:45:41,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 16:45:41,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:45:41,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 16:45:41,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash -556764890, now seen corresponding path program 2 times [2024-10-14 16:45:41,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149728861] [2024-10-14 16:45:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:41,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:45:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:45:41,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:45:41,823 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2024-10-14 16:45:41,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2024-10-14 16:45:41,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2024-10-14 16:45:41,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2024-10-14 16:45:41,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2024-10-14 16:45:41,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2024-10-14 16:45:41,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 16:45:41,830 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-14 16:45:41,830 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:45:41,831 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 16:45:41,883 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:45:41,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 384 transitions, 808 flow [2024-10-14 16:45:41,977 INFO L124 PetriNetUnfolderBase]: 38/437 cut-off events. [2024-10-14 16:45:41,977 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 16:45:41,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 437 events. 38/437 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1571 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 372. Up to 12 conditions per place. [2024-10-14 16:45:41,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 384 transitions, 808 flow [2024-10-14 16:45:41,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 384 transitions, 808 flow [2024-10-14 16:45:41,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:45:41,992 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;@1ae56ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:45:41,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-14 16:45:41,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:45:41,996 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-14 16:45:41,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:45:41,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:45:41,997 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] [2024-10-14 16:45:41,997 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)] === [2024-10-14 16:45:41,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:45:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash -630489942, now seen corresponding path program 1 times [2024-10-14 16:45:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:45:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429088333] [2024-10-14 16:45:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:45:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:45:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:45:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:45:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:45:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429088333] [2024-10-14 16:45:42,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429088333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:45:42,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:45:42,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:45:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997051133] [2024-10-14 16:45:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:45:42,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:45:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:45:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:45:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:45:42,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 384 [2024-10-14 16:45:42,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 384 transitions, 808 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) [2024-10-14 16:45:42,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:45:42,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 384 [2024-10-14 16:45:42,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand