./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:53:36,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:53:36,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-22 17:53:36,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:53:36,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:53:36,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:53:36,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:53:36,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:53:36,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:53:36,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:53:36,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:53:36,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:53:36,966 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:53:36,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:53:36,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:53:36,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:53:36,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:53:36,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:53:36,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:53:36,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:53:36,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:53:36,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:53:36,972 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-22 17:53:36,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:53:36,972 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 17:53:36,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:53:36,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:53:36,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:53:36,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:53:36,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:53:36,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:53:36,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:53:36,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:53:36,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:53:36,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:53:36,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:53:36,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:53:36,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:53:36,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:53:36,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:53:36,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:53:36,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2024-11-22 17:53:37,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:53:37,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:53:37,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:53:37,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:53:37,232 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:53:37,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-22 17:53:38,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:53:38,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:53:38,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-22 17:53:38,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8030c7374/036c88e1741240f394a706b5d9573ab8/FLAGd1360f7bf [2024-11-22 17:53:39,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8030c7374/036c88e1741240f394a706b5d9573ab8 [2024-11-22 17:53:39,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:53:39,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:53:39,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:53:39,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:53:39,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:53:39,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411879ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39, skipping insertion in model container [2024-11-22 17:53:39,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,154 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:53:39,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:53:39,480 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:53:39,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:53:39,580 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:53:39,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39 WrapperNode [2024-11-22 17:53:39,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:53:39,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:53:39,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:53:39,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:53:39,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,656 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 210 [2024-11-22 17:53:39,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:53:39,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:53:39,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:53:39,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:53:39,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:53:39,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:53:39,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:53:39,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:53:39,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (1/1) ... [2024-11-22 17:53:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:53:39,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:53:39,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 17:53:39,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 17:53:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 17:53:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 17:53:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 17:53:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:53:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:53:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 17:53:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 17:53:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:53:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 17:53:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 17:53:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:53:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:53:39,867 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 17:53:40,059 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:53:40,065 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:53:40,353 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 17:53:40,353 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:53:40,392 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:53:40,392 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-22 17:53:40,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:53:40 BoogieIcfgContainer [2024-11-22 17:53:40,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:53:40,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:53:40,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:53:40,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:53:40,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:53:39" (1/3) ... [2024-11-22 17:53:40,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da22b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:53:40, skipping insertion in model container [2024-11-22 17:53:40,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:39" (2/3) ... [2024-11-22 17:53:40,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da22b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:53:40, skipping insertion in model container [2024-11-22 17:53:40,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:53:40" (3/3) ... [2024-11-22 17:53:40,399 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-11-22 17:53:40,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:53:40,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-22 17:53:40,414 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 17:53:40,478 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 17:53:40,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 210 transitions, 427 flow [2024-11-22 17:53:40,612 INFO L124 PetriNetUnfolderBase]: 36/309 cut-off events. [2024-11-22 17:53:40,613 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 17:53:40,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 309 events. 36/309 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1292 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 179. Up to 6 conditions per place. [2024-11-22 17:53:40,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 210 transitions, 427 flow [2024-11-22 17:53:40,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 210 transitions, 427 flow [2024-11-22 17:53:40,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:53:40,649 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;@6a91433b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:53:40,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-22 17:53:40,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:53:40,664 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-22 17:53:40,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:53:40,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:40,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:40,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-22 17:53:40,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1643993819, now seen corresponding path program 1 times [2024-11-22 17:53:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534311593] [2024-11-22 17:53:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:40,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534311593] [2024-11-22 17:53:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534311593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:53:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212043950] [2024-11-22 17:53:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:40,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 17:53:40,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 17:53:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:53:40,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2024-11-22 17:53:40,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 210 transitions, 427 flow. Second operand has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:40,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:40,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2024-11-22 17:53:40,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:41,110 INFO L124 PetriNetUnfolderBase]: 82/853 cut-off events. [2024-11-22 17:53:41,111 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 17:53:41,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 853 events. 82/853 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5123 event pairs, 72 based on Foata normal form. 153/900 useless extension candidates. Maximal degree in co-relation 898. Up to 172 conditions per place. [2024-11-22 17:53:41,120 INFO L140 encePairwiseOnDemand]: 188/210 looper letters, 19 selfloop transitions, 0 changer transitions 0/184 dead transitions. [2024-11-22 17:53:41,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 413 flow [2024-11-22 17:53:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 17:53:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 17:53:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2024-11-22 17:53:41,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2024-11-22 17:53:41,134 INFO L175 Difference]: Start difference. First operand has 189 places, 210 transitions, 427 flow. Second operand 2 states and 375 transitions. [2024-11-22 17:53:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 413 flow [2024-11-22 17:53:41,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 184 transitions, 413 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:41,141 INFO L231 Difference]: Finished difference. Result has 186 places, 184 transitions, 375 flow [2024-11-22 17:53:41,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=375, PETRI_PLACES=186, PETRI_TRANSITIONS=184} [2024-11-22 17:53:41,147 INFO L277 CegarLoopForPetriNet]: 189 programPoint places, -3 predicate places. [2024-11-22 17:53:41,147 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 184 transitions, 375 flow [2024-11-22 17:53:41,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:41,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:41,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:41,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:53:41,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-22 17:53:41,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:41,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1641143443, now seen corresponding path program 1 times [2024-11-22 17:53:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395804133] [2024-11-22 17:53:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:41,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395804133] [2024-11-22 17:53:41,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395804133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:41,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:53:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058287096] [2024-11-22 17:53:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:41,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:53:41,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2024-11-22 17:53:41,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 184 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:41,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:41,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2024-11-22 17:53:41,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:41,440 INFO L124 PetriNetUnfolderBase]: 110/1056 cut-off events. [2024-11-22 17:53:41,440 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 17:53:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 1056 events. 110/1056 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6685 event pairs, 88 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 1301. Up to 232 conditions per place. [2024-11-22 17:53:41,445 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 32 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2024-11-22 17:53:41,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 193 transitions, 461 flow [2024-11-22 17:53:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:53:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:53:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2024-11-22 17:53:41,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2024-11-22 17:53:41,448 INFO L175 Difference]: Start difference. First operand has 186 places, 184 transitions, 375 flow. Second operand 3 states and 518 transitions. [2024-11-22 17:53:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 193 transitions, 461 flow [2024-11-22 17:53:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 193 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:41,452 INFO L231 Difference]: Finished difference. Result has 189 places, 184 transitions, 383 flow [2024-11-22 17:53:41,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=189, PETRI_TRANSITIONS=184} [2024-11-22 17:53:41,453 INFO L277 CegarLoopForPetriNet]: 189 programPoint places, 0 predicate places. [2024-11-22 17:53:41,453 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 184 transitions, 383 flow [2024-11-22 17:53:41,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:41,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:41,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:41,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:53:41,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-22 17:53:41,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 224006694, now seen corresponding path program 1 times [2024-11-22 17:53:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902843802] [2024-11-22 17:53:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:41,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902843802] [2024-11-22 17:53:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902843802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:53:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800348510] [2024-11-22 17:53:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:41,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:53:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:53:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:53:41,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 210 [2024-11-22 17:53:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 184 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:41,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 210 [2024-11-22 17:53:41,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:42,188 INFO L124 PetriNetUnfolderBase]: 202/1301 cut-off events. [2024-11-22 17:53:42,189 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-22 17:53:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 1301 events. 202/1301 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9029 event pairs, 136 based on Foata normal form. 0/1180 useless extension candidates. Maximal degree in co-relation 1771. Up to 335 conditions per place. [2024-11-22 17:53:42,194 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 67 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2024-11-22 17:53:42,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 219 transitions, 597 flow [2024-11-22 17:53:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:53:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:53:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 967 transitions. [2024-11-22 17:53:42,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7674603174603175 [2024-11-22 17:53:42,197 INFO L175 Difference]: Start difference. First operand has 189 places, 184 transitions, 383 flow. Second operand 6 states and 967 transitions. [2024-11-22 17:53:42,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 219 transitions, 597 flow [2024-11-22 17:53:42,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 219 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 17:53:42,200 INFO L231 Difference]: Finished difference. Result has 191 places, 183 transitions, 387 flow [2024-11-22 17:53:42,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=191, PETRI_TRANSITIONS=183} [2024-11-22 17:53:42,201 INFO L277 CegarLoopForPetriNet]: 189 programPoint places, 2 predicate places. [2024-11-22 17:53:42,201 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 183 transitions, 387 flow [2024-11-22 17:53:42,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:42,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:42,202 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] [2024-11-22 17:53:42,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:53:42,202 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-22 17:53:42,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -336056165, now seen corresponding path program 1 times [2024-11-22 17:53:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:42,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682139923] [2024-11-22 17:53:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682139923] [2024-11-22 17:53:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682139923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:53:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415202124] [2024-11-22 17:53:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:42,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:53:42,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 210 [2024-11-22 17:53:42,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 183 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:42,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:42,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 210 [2024-11-22 17:53:42,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:42,463 INFO L124 PetriNetUnfolderBase]: 442/2623 cut-off events. [2024-11-22 17:53:42,463 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 17:53:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 2623 events. 442/2623 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21163 event pairs, 177 based on Foata normal form. 0/2379 useless extension candidates. Maximal degree in co-relation 3610. Up to 608 conditions per place. [2024-11-22 17:53:42,473 INFO L140 encePairwiseOnDemand]: 185/210 looper letters, 62 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-11-22 17:53:42,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 219 transitions, 622 flow [2024-11-22 17:53:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:53:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:53:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2024-11-22 17:53:42,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2024-11-22 17:53:42,475 INFO L175 Difference]: Start difference. First operand has 191 places, 183 transitions, 387 flow. Second operand 3 states and 513 transitions. [2024-11-22 17:53:42,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 219 transitions, 622 flow [2024-11-22 17:53:42,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 219 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:53:42,478 INFO L231 Difference]: Finished difference. Result has 190 places, 201 transitions, 535 flow [2024-11-22 17:53:42,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=190, PETRI_TRANSITIONS=201} [2024-11-22 17:53:42,479 INFO L277 CegarLoopForPetriNet]: 189 programPoint places, 1 predicate places. [2024-11-22 17:53:42,479 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 201 transitions, 535 flow [2024-11-22 17:53:42,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:42,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:42,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:42,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:53:42,480 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-22 17:53:42,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1779233426, now seen corresponding path program 1 times [2024-11-22 17:53:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785623472] [2024-11-22 17:53:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:53:42,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:53:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:53:42,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:53:42,528 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:53:42,529 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-22 17:53:42,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-22 17:53:42,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-22 17:53:42,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-22 17:53:42,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-22 17:53:42,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-11-22 17:53:42,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-22 17:53:42,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-22 17:53:42,534 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-22 17:53:42,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 17:53:42,534 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 17:53:42,537 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:53:42,537 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 17:53:42,573 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 17:53:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 289 transitions, 594 flow [2024-11-22 17:53:42,634 INFO L124 PetriNetUnfolderBase]: 62/515 cut-off events. [2024-11-22 17:53:42,635 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 17:53:42,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 515 events. 62/515 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2378 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 311. Up to 9 conditions per place. [2024-11-22 17:53:42,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 289 transitions, 594 flow [2024-11-22 17:53:42,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 289 transitions, 594 flow [2024-11-22 17:53:42,643 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:53:42,643 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;@6a91433b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:53:42,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-22 17:53:42,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:53:42,648 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-22 17:53:42,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:53:42,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:42,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:42,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:53:42,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2058564795, now seen corresponding path program 1 times [2024-11-22 17:53:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:42,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6532848] [2024-11-22 17:53:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:42,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6532848] [2024-11-22 17:53:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6532848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:42,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:42,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:53:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193610255] [2024-11-22 17:53:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:42,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 17:53:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 17:53:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:53:42,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 289 [2024-11-22 17:53:42,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 289 transitions, 594 flow. Second operand has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:42,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:42,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 289 [2024-11-22 17:53:42,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:43,482 INFO L124 PetriNetUnfolderBase]: 1733/9097 cut-off events. [2024-11-22 17:53:43,483 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-22 17:53:43,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11797 conditions, 9097 events. 1733/9097 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 100917 event pairs, 1620 based on Foata normal form. 2258/10244 useless extension candidates. Maximal degree in co-relation 10589. Up to 2642 conditions per place. [2024-11-22 17:53:43,526 INFO L140 encePairwiseOnDemand]: 257/289 looper letters, 30 selfloop transitions, 0 changer transitions 0/251 dead transitions. [2024-11-22 17:53:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 251 transitions, 578 flow [2024-11-22 17:53:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 17:53:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 17:53:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 510 transitions. [2024-11-22 17:53:43,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2024-11-22 17:53:43,528 INFO L175 Difference]: Start difference. First operand has 258 places, 289 transitions, 594 flow. Second operand 2 states and 510 transitions. [2024-11-22 17:53:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 251 transitions, 578 flow [2024-11-22 17:53:43,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 251 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:43,532 INFO L231 Difference]: Finished difference. Result has 253 places, 251 transitions, 518 flow [2024-11-22 17:53:43,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=518, PETRI_PLACES=253, PETRI_TRANSITIONS=251} [2024-11-22 17:53:43,533 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, -5 predicate places. [2024-11-22 17:53:43,533 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 251 transitions, 518 flow [2024-11-22 17:53:43,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:43,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:43,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:43,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 17:53:43,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:53:43,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2055714419, now seen corresponding path program 1 times [2024-11-22 17:53:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608944044] [2024-11-22 17:53:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:43,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608944044] [2024-11-22 17:53:43,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608944044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:43,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:53:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534997816] [2024-11-22 17:53:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:43,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:53:43,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 289 [2024-11-22 17:53:43,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 251 transitions, 518 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:43,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:43,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 289 [2024-11-22 17:53:43,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:44,837 INFO L124 PetriNetUnfolderBase]: 2529/12797 cut-off events. [2024-11-22 17:53:44,837 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-11-22 17:53:44,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16706 conditions, 12797 events. 2529/12797 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 150315 event pairs, 1098 based on Foata normal form. 1/11369 useless extension candidates. Maximal degree in co-relation 16701. Up to 3840 conditions per place. [2024-11-22 17:53:44,896 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 44 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-11-22 17:53:44,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 261 transitions, 630 flow [2024-11-22 17:53:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:53:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:53:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2024-11-22 17:53:44,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8085351787773933 [2024-11-22 17:53:44,898 INFO L175 Difference]: Start difference. First operand has 253 places, 251 transitions, 518 flow. Second operand 3 states and 701 transitions. [2024-11-22 17:53:44,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 261 transitions, 630 flow [2024-11-22 17:53:44,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 261 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:44,902 INFO L231 Difference]: Finished difference. Result has 256 places, 252 transitions, 530 flow [2024-11-22 17:53:44,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=256, PETRI_TRANSITIONS=252} [2024-11-22 17:53:44,903 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, -2 predicate places. [2024-11-22 17:53:44,903 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 252 transitions, 530 flow [2024-11-22 17:53:44,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:44,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:44,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:44,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:53:44,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:53:44,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash 257208615, now seen corresponding path program 1 times [2024-11-22 17:53:44,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835708225] [2024-11-22 17:53:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835708225] [2024-11-22 17:53:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835708225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:45,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:53:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143015616] [2024-11-22 17:53:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:53:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:53:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:53:45,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 289 [2024-11-22 17:53:45,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 252 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:45,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:45,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 289 [2024-11-22 17:53:45,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:47,062 INFO L124 PetriNetUnfolderBase]: 4384/17285 cut-off events. [2024-11-22 17:53:47,062 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-22 17:53:47,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24452 conditions, 17285 events. 4384/17285 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 204989 event pairs, 2104 based on Foata normal form. 0/15593 useless extension candidates. Maximal degree in co-relation 24445. Up to 5258 conditions per place. [2024-11-22 17:53:47,138 INFO L140 encePairwiseOnDemand]: 283/289 looper letters, 114 selfloop transitions, 6 changer transitions 0/323 dead transitions. [2024-11-22 17:53:47,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 323 transitions, 912 flow [2024-11-22 17:53:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:53:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:53:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1356 transitions. [2024-11-22 17:53:47,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7820069204152249 [2024-11-22 17:53:47,141 INFO L175 Difference]: Start difference. First operand has 256 places, 252 transitions, 530 flow. Second operand 6 states and 1356 transitions. [2024-11-22 17:53:47,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 323 transitions, 912 flow [2024-11-22 17:53:47,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 323 transitions, 910 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:53:47,147 INFO L231 Difference]: Finished difference. Result has 259 places, 251 transitions, 538 flow [2024-11-22 17:53:47,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=259, PETRI_TRANSITIONS=251} [2024-11-22 17:53:47,150 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, 1 predicate places. [2024-11-22 17:53:47,150 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 251 transitions, 538 flow [2024-11-22 17:53:47,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:47,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:47,153 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] [2024-11-22 17:53:47,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 17:53:47,153 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:53:47,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1088174321, now seen corresponding path program 1 times [2024-11-22 17:53:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:47,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147074813] [2024-11-22 17:53:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147074813] [2024-11-22 17:53:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147074813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:47,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:53:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478109902] [2024-11-22 17:53:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:47,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:53:47,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 289 [2024-11-22 17:53:47,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 251 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:47,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:47,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 289 [2024-11-22 17:53:47,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:53,947 INFO L124 PetriNetUnfolderBase]: 26162/85747 cut-off events. [2024-11-22 17:53:53,948 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2024-11-22 17:53:54,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128050 conditions, 85747 events. 26162/85747 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 1629. Compared 1195118 event pairs, 10477 based on Foata normal form. 0/76865 useless extension candidates. Maximal degree in co-relation 128043. Up to 26496 conditions per place. [2024-11-22 17:53:54,379 INFO L140 encePairwiseOnDemand]: 250/289 looper letters, 98 selfloop transitions, 28 changer transitions 0/308 dead transitions. [2024-11-22 17:53:54,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 308 transitions, 915 flow [2024-11-22 17:53:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:53:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:53:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2024-11-22 17:53:54,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.798154555940023 [2024-11-22 17:53:54,381 INFO L175 Difference]: Start difference. First operand has 259 places, 251 transitions, 538 flow. Second operand 3 states and 692 transitions. [2024-11-22 17:53:54,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 308 transitions, 915 flow [2024-11-22 17:53:54,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 308 transitions, 903 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 17:53:54,388 INFO L231 Difference]: Finished difference. Result has 258 places, 279 transitions, 772 flow [2024-11-22 17:53:54,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=258, PETRI_TRANSITIONS=279} [2024-11-22 17:53:54,389 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, 0 predicate places. [2024-11-22 17:53:54,389 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 279 transitions, 772 flow [2024-11-22 17:53:54,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:54,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:54,390 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] [2024-11-22 17:53:54,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 17:53:54,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:53:54,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1058884623, now seen corresponding path program 1 times [2024-11-22 17:53:54,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:54,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517135245] [2024-11-22 17:53:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:54,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517135245] [2024-11-22 17:53:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517135245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:53:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784275890] [2024-11-22 17:53:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:54,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:53:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:53:54,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:53:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:53:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:54,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 17:53:54,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:53:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:53:54,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:53:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784275890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:54,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:53:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 17:53:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720545435] [2024-11-22 17:53:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:54,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:53:54,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 289 [2024-11-22 17:53:54,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 279 transitions, 772 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:54,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:54,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 289 [2024-11-22 17:53:54,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:03,221 INFO L124 PetriNetUnfolderBase]: 27093/95640 cut-off events. [2024-11-22 17:54:03,221 INFO L125 PetriNetUnfolderBase]: For 29302/30568 co-relation queries the response was YES. [2024-11-22 17:54:03,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168012 conditions, 95640 events. 27093/95640 cut-off events. For 29302/30568 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 1384883 event pairs, 16434 based on Foata normal form. 292/86863 useless extension candidates. Maximal degree in co-relation 168004. Up to 36690 conditions per place. [2024-11-22 17:54:03,705 INFO L140 encePairwiseOnDemand]: 273/289 looper letters, 86 selfloop transitions, 28 changer transitions 0/323 dead transitions. [2024-11-22 17:54:03,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 323 transitions, 1160 flow [2024-11-22 17:54:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:54:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:54:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2024-11-22 17:54:03,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7946943483275664 [2024-11-22 17:54:03,709 INFO L175 Difference]: Start difference. First operand has 258 places, 279 transitions, 772 flow. Second operand 3 states and 689 transitions. [2024-11-22 17:54:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 323 transitions, 1160 flow [2024-11-22 17:54:03,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 323 transitions, 1080 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 17:54:03,782 INFO L231 Difference]: Finished difference. Result has 260 places, 305 transitions, 982 flow [2024-11-22 17:54:03,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=982, PETRI_PLACES=260, PETRI_TRANSITIONS=305} [2024-11-22 17:54:03,783 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, 2 predicate places. [2024-11-22 17:54:03,783 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 305 transitions, 982 flow [2024-11-22 17:54:03,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:03,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:03,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:03,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 17:54:03,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 17:54:03,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:54:03,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1908698949, now seen corresponding path program 1 times [2024-11-22 17:54:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359445351] [2024-11-22 17:54:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359445351] [2024-11-22 17:54:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359445351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:54:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:54:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:54:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748541269] [2024-11-22 17:54:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:54:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:54:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:54:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:54:04,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 289 [2024-11-22 17:54:04,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 305 transitions, 982 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:04,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:04,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 289 [2024-11-22 17:54:04,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:14,195 INFO L124 PetriNetUnfolderBase]: 27230/110035 cut-off events. [2024-11-22 17:54:14,196 INFO L125 PetriNetUnfolderBase]: For 15354/17874 co-relation queries the response was YES. [2024-11-22 17:54:14,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177276 conditions, 110035 events. 27230/110035 cut-off events. For 15354/17874 co-relation queries the response was YES. Maximal size of possible extension queue 2381. Compared 1713903 event pairs, 11631 based on Foata normal form. 281/97996 useless extension candidates. Maximal degree in co-relation 177267. Up to 20219 conditions per place. [2024-11-22 17:54:14,998 INFO L140 encePairwiseOnDemand]: 278/289 looper letters, 65 selfloop transitions, 9 changer transitions 0/336 dead transitions. [2024-11-22 17:54:14,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 336 transitions, 1194 flow [2024-11-22 17:54:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:54:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:54:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2024-11-22 17:54:15,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8246828143021915 [2024-11-22 17:54:15,001 INFO L175 Difference]: Start difference. First operand has 260 places, 305 transitions, 982 flow. Second operand 3 states and 715 transitions. [2024-11-22 17:54:15,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 336 transitions, 1194 flow [2024-11-22 17:54:15,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 336 transitions, 1138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 17:54:15,072 INFO L231 Difference]: Finished difference. Result has 261 places, 310 transitions, 986 flow [2024-11-22 17:54:15,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=986, PETRI_PLACES=261, PETRI_TRANSITIONS=310} [2024-11-22 17:54:15,073 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, 3 predicate places. [2024-11-22 17:54:15,075 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 310 transitions, 986 flow [2024-11-22 17:54:15,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:15,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:15,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:15,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 17:54:15,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:54:15,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 439729732, now seen corresponding path program 1 times [2024-11-22 17:54:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918070686] [2024-11-22 17:54:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:15,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918070686] [2024-11-22 17:54:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918070686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:54:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217475299] [2024-11-22 17:54:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:15,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:54:15,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:54:15,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:54:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:15,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:54:15,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:54:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:15,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:54:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217475299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:54:15,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:54:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:54:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010254148] [2024-11-22 17:54:15,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:54:15,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:54:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:54:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:54:15,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 289 [2024-11-22 17:54:15,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 310 transitions, 986 flow. Second operand has 10 states, 10 states have (on average 217.4) internal successors, (2174), 10 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:15,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:15,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 289 [2024-11-22 17:54:15,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:15,540 INFO L124 PetriNetUnfolderBase]: 281/1256 cut-off events. [2024-11-22 17:54:15,541 INFO L125 PetriNetUnfolderBase]: For 93/99 co-relation queries the response was YES. [2024-11-22 17:54:15,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1256 events. 281/1256 cut-off events. For 93/99 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9085 event pairs, 35 based on Foata normal form. 46/1261 useless extension candidates. Maximal degree in co-relation 1914. Up to 194 conditions per place. [2024-11-22 17:54:15,546 INFO L140 encePairwiseOnDemand]: 284/289 looper letters, 50 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2024-11-22 17:54:15,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 136 transitions, 442 flow [2024-11-22 17:54:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:54:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:54:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2024-11-22 17:54:15,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7666282199154172 [2024-11-22 17:54:15,550 INFO L175 Difference]: Start difference. First operand has 261 places, 310 transitions, 986 flow. Second operand 9 states and 1994 transitions. [2024-11-22 17:54:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 136 transitions, 442 flow [2024-11-22 17:54:15,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 428 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 17:54:15,554 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 252 flow [2024-11-22 17:54:15,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-11-22 17:54:15,554 INFO L277 CegarLoopForPetriNet]: 258 programPoint places, -145 predicate places. [2024-11-22 17:54:15,555 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 252 flow [2024-11-22 17:54:15,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.4) internal successors, (2174), 10 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:15,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:15,556 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-22 17:54:15,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 17:54:15,756 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,SelfDestructingSolverStorable11 [2024-11-22 17:54:15,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2024-11-22 17:54:15,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash 279989366, now seen corresponding path program 1 times [2024-11-22 17:54:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48624351] [2024-11-22 17:54:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:15,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:54:15,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:54:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:54:15,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:54:15,800 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:54:15,800 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-22 17:54:15,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-11-22 17:54:15,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-11-22 17:54:15,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-11-22 17:54:15,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-11-22 17:54:15,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-11-22 17:54:15,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-11-22 17:54:15,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-11-22 17:54:15,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-11-22 17:54:15,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-11-22 17:54:15,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-11-22 17:54:15,805 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-11-22 17:54:15,805 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-11-22 17:54:15,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-11-22 17:54:15,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-11-22 17:54:15,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-11-22 17:54:15,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 17:54:15,807 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:15,808 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:54:15,808 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 17:54:15,837 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 17:54:15,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 368 transitions, 763 flow