./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:10:45,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:10:45,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:10:45,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:10:45,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:10:45,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:10:45,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:10:45,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:10:45,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:10:45,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:10:45,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:10:45,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:10:45,239 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:10:45,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:10:45,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:10:45,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:10:45,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:10:45,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:10:45,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:10:45,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:10:45,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:10:45,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:10:45,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:10:45,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:10:45,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:10:45,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:10:45,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:10:45,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:10:45,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:10:45,248 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-10-11 17:10:45,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:10:45,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:10:45,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:10:45,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:10:45,506 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:10:45,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-10-11 17:10:46,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:10:47,083 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:10:47,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-10-11 17:10:47,098 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d47ae66b8/e24b4de78f234b508a9640322424f323/FLAG042c0ec04 [2024-10-11 17:10:47,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d47ae66b8/e24b4de78f234b508a9640322424f323 [2024-10-11 17:10:47,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:10:47,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:10:47,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:10:47,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:10:47,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:10:47,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2495c6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47, skipping insertion in model container [2024-10-11 17:10:47,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:10:47,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:10:47,802 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:10:47,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:10:47,886 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:10:47,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47 WrapperNode [2024-10-11 17:10:47,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:10:47,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:10:47,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:10:47,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:10:47,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,942 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-10-11 17:10:47,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:10:47,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:10:47,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:10:47,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:10:47,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:47,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:10:47,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:10:47,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:10:47,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:10:47,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (1/1) ... [2024-10-11 17:10:48,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:10:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:48,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:10:48,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:10:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:10:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:10:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:10:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:10:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:10:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:10:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:10:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:10:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:10:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:10:48,072 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:10:48,201 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:10:48,203 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:10:48,434 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:10:48,435 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:10:48,471 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:10:48,471 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-11 17:10:48,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:48 BoogieIcfgContainer [2024-10-11 17:10:48,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:10:48,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:10:48,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:10:48,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:10:48,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:10:47" (1/3) ... [2024-10-11 17:10:48,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a5bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:48, skipping insertion in model container [2024-10-11 17:10:48,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:47" (2/3) ... [2024-10-11 17:10:48,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a5bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:48, skipping insertion in model container [2024-10-11 17:10:48,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:48" (3/3) ... [2024-10-11 17:10:48,482 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-10-11 17:10:48,496 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:10:48,496 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 17:10:48,496 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:10:48,544 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 17:10:48,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 158 transitions, 320 flow [2024-10-11 17:10:48,711 INFO L124 PetriNetUnfolderBase]: 16/213 cut-off events. [2024-10-11 17:10:48,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 619 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2024-10-11 17:10:48,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 158 transitions, 320 flow [2024-10-11 17:10:48,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 158 transitions, 320 flow [2024-10-11 17:10:48,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:10:48,734 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;@25e7846d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:10:48,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 17:10:48,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:10:48,745 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-11 17:10:48,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:48,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:48,746 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] [2024-10-11 17:10:48,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 17:10:48,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2139724163, now seen corresponding path program 1 times [2024-10-11 17:10:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:48,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896458863] [2024-10-11 17:10:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896458863] [2024-10-11 17:10:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896458863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:49,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:10:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880771547] [2024-10-11 17:10:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:49,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:49,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 158 [2024-10-11 17:10:49,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:49,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:49,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 158 [2024-10-11 17:10:49,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:49,216 INFO L124 PetriNetUnfolderBase]: 48/581 cut-off events. [2024-10-11 17:10:49,216 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:10:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 581 events. 48/581 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2754 event pairs, 35 based on Foata normal form. 55/575 useless extension candidates. Maximal degree in co-relation 655. Up to 106 conditions per place. [2024-10-11 17:10:49,225 INFO L140 encePairwiseOnDemand]: 144/158 looper letters, 21 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-10-11 17:10:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 352 flow [2024-10-11 17:10:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2024-10-11 17:10:49,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9050632911392406 [2024-10-11 17:10:49,242 INFO L175 Difference]: Start difference. First operand has 150 places, 158 transitions, 320 flow. Second operand 3 states and 429 transitions. [2024-10-11 17:10:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 352 flow [2024-10-11 17:10:49,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:10:49,249 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 302 flow [2024-10-11 17:10:49,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2024-10-11 17:10:49,255 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, 1 predicate places. [2024-10-11 17:10:49,256 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 302 flow [2024-10-11 17:10:49,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:49,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:49,257 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] [2024-10-11 17:10:49,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:10:49,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 17:10:49,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 334440198, now seen corresponding path program 1 times [2024-10-11 17:10:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634367455] [2024-10-11 17:10:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:49,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634367455] [2024-10-11 17:10:49,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634367455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:10:49,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496194409] [2024-10-11 17:10:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:49,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:49,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:10:49,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:10:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:49,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:10:49,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:10:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:10:49,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:10:49,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496194409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:49,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:10:49,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:10:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643962866] [2024-10-11 17:10:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:49,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:49,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:49,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2024-10-11 17:10:49,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:49,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:49,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2024-10-11 17:10:49,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:49,601 INFO L124 PetriNetUnfolderBase]: 60/618 cut-off events. [2024-10-11 17:10:49,601 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 17:10:49,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 618 events. 60/618 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3013 event pairs, 40 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 722. Up to 134 conditions per place. [2024-10-11 17:10:49,603 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 19 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-10-11 17:10:49,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 346 flow [2024-10-11 17:10:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2024-10-11 17:10:49,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8481012658227848 [2024-10-11 17:10:49,608 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 302 flow. Second operand 3 states and 402 transitions. [2024-10-11 17:10:49,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 346 flow [2024-10-11 17:10:49,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:10:49,612 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 306 flow [2024-10-11 17:10:49,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2024-10-11 17:10:49,614 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, -1 predicate places. [2024-10-11 17:10:49,614 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 306 flow [2024-10-11 17:10:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:49,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:49,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:10:49,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:10:49,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:49,816 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 17:10:49,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1778246148, now seen corresponding path program 1 times [2024-10-11 17:10:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296088367] [2024-10-11 17:10:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:49,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:49,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:10:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:49,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:10:49,872 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:10:49,873 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-11 17:10:49,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-11 17:10:49,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-11 17:10:49,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-11 17:10:49,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-11 17:10:49,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-11 17:10:49,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-11 17:10:49,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-11 17:10:49,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-11 17:10:49,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-11 17:10:49,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-11 17:10:49,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-11 17:10:49,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-11 17:10:49,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-11 17:10:49,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-11 17:10:49,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-11 17:10:49,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-11 17:10:49,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 17:10:49,881 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 17:10:49,884 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:10:49,884 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 17:10:49,915 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 17:10:49,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 228 transitions, 466 flow [2024-10-11 17:10:49,957 INFO L124 PetriNetUnfolderBase]: 27/341 cut-off events. [2024-10-11 17:10:49,957 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 17:10:49,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 341 events. 27/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1368 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 214. Up to 6 conditions per place. [2024-10-11 17:10:49,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 228 transitions, 466 flow [2024-10-11 17:10:49,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 228 transitions, 466 flow [2024-10-11 17:10:49,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:10:49,963 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;@25e7846d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:10:49,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 17:10:49,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:10:49,966 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-11 17:10:49,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:49,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:49,967 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] [2024-10-11 17:10:49,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:10:49,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2076926111, now seen corresponding path program 1 times [2024-10-11 17:10:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816767954] [2024-10-11 17:10:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:49,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816767954] [2024-10-11 17:10:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816767954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:10:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897209731] [2024-10-11 17:10:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:50,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:50,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 228 [2024-10-11 17:10:50,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 228 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:50,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:50,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 228 [2024-10-11 17:10:50,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:50,729 INFO L124 PetriNetUnfolderBase]: 762/5494 cut-off events. [2024-10-11 17:10:50,729 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-11 17:10:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 5494 events. 762/5494 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 54455 event pairs, 336 based on Foata normal form. 681/5647 useless extension candidates. Maximal degree in co-relation 917. Up to 1261 conditions per place. [2024-10-11 17:10:50,757 INFO L140 encePairwiseOnDemand]: 208/228 looper letters, 29 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2024-10-11 17:10:50,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 504 flow [2024-10-11 17:10:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2024-10-11 17:10:50,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2024-10-11 17:10:50,763 INFO L175 Difference]: Start difference. First operand has 216 places, 228 transitions, 466 flow. Second operand 3 states and 614 transitions. [2024-10-11 17:10:50,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 504 flow [2024-10-11 17:10:50,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:10:50,768 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 440 flow [2024-10-11 17:10:50,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2024-10-11 17:10:50,770 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2024-10-11 17:10:50,770 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 440 flow [2024-10-11 17:10:50,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:50,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:50,771 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] [2024-10-11 17:10:50,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 17:10:50,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:10:50,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1304754683, now seen corresponding path program 1 times [2024-10-11 17:10:50,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:50,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903656476] [2024-10-11 17:10:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:50,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903656476] [2024-10-11 17:10:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903656476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:10:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380405065] [2024-10-11 17:10:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:50,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:50,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:10:50,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:10:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:50,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:10:50,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:10:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:10:50,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:10:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380405065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:50,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:10:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:10:50,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546764844] [2024-10-11 17:10:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:50,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:50,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 228 [2024-10-11 17:10:50,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:50,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:50,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 228 [2024-10-11 17:10:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:51,810 INFO L124 PetriNetUnfolderBase]: 1490/8251 cut-off events. [2024-10-11 17:10:51,810 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-11 17:10:51,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 8251 events. 1490/8251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 86869 event pairs, 1046 based on Foata normal form. 0/7650 useless extension candidates. Maximal degree in co-relation 10664. Up to 2396 conditions per place. [2024-10-11 17:10:51,846 INFO L140 encePairwiseOnDemand]: 220/228 looper letters, 33 selfloop transitions, 3 changer transitions 0/213 dead transitions. [2024-10-11 17:10:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 213 transitions, 523 flow [2024-10-11 17:10:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2024-10-11 17:10:51,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8362573099415205 [2024-10-11 17:10:51,848 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 440 flow. Second operand 3 states and 572 transitions. [2024-10-11 17:10:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 213 transitions, 523 flow [2024-10-11 17:10:51,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:10:51,852 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 449 flow [2024-10-11 17:10:51,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2024-10-11 17:10:51,853 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -2 predicate places. [2024-10-11 17:10:51,853 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 449 flow [2024-10-11 17:10:51,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:51,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:51,854 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] [2024-10-11 17:10:51,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:10:52,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:52,055 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:10:52,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1925053044, now seen corresponding path program 1 times [2024-10-11 17:10:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097176839] [2024-10-11 17:10:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097176839] [2024-10-11 17:10:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097176839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:10:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029048248] [2024-10-11 17:10:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:52,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:10:52,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:10:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:52,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:10:52,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:10:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:10:52,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:10:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029048248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:52,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:10:52,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:10:52,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316880112] [2024-10-11 17:10:52,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:52,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:52,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 228 [2024-10-11 17:10:52,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:52,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:52,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 228 [2024-10-11 17:10:52,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:52,776 INFO L124 PetriNetUnfolderBase]: 1057/5033 cut-off events. [2024-10-11 17:10:52,777 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-11 17:10:52,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 5033 events. 1057/5033 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47164 event pairs, 854 based on Foata normal form. 0/4532 useless extension candidates. Maximal degree in co-relation 6133. Up to 1434 conditions per place. [2024-10-11 17:10:52,800 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 35 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2024-10-11 17:10:52,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 545 flow [2024-10-11 17:10:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2024-10-11 17:10:52,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8625730994152047 [2024-10-11 17:10:52,802 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 449 flow. Second operand 3 states and 590 transitions. [2024-10-11 17:10:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 545 flow [2024-10-11 17:10:52,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:10:52,806 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 451 flow [2024-10-11 17:10:52,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2024-10-11 17:10:52,807 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -1 predicate places. [2024-10-11 17:10:52,807 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 451 flow [2024-10-11 17:10:52,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:52,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:52,808 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] [2024-10-11 17:10:52,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:10:53,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:53,012 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:10:53,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1712230884, now seen corresponding path program 1 times [2024-10-11 17:10:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-10-11 17:10:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:53,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:53,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:53,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-10-11 17:10:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083638961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:53,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:10:53,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990512564] [2024-10-11 17:10:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:53,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:10:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:10:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:53,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 228 [2024-10-11 17:10:53,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:53,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:53,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 228 [2024-10-11 17:10:53,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:57,185 INFO L124 PetriNetUnfolderBase]: 14160/34092 cut-off events. [2024-10-11 17:10:57,186 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-10-11 17:10:57,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57500 conditions, 34092 events. 14160/34092 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 383271 event pairs, 4464 based on Foata normal form. 0/32872 useless extension candidates. Maximal degree in co-relation 56508. Up to 10096 conditions per place. [2024-10-11 17:10:57,385 INFO L140 encePairwiseOnDemand]: 184/228 looper letters, 219 selfloop transitions, 84 changer transitions 0/447 dead transitions. [2024-10-11 17:10:57,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 447 transitions, 1557 flow [2024-10-11 17:10:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:10:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:10:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1189 transitions. [2024-10-11 17:10:57,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691520467836257 [2024-10-11 17:10:57,389 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 451 flow. Second operand 6 states and 1189 transitions. [2024-10-11 17:10:57,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 447 transitions, 1557 flow [2024-10-11 17:10:57,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 447 transitions, 1553 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:10:57,396 INFO L231 Difference]: Finished difference. Result has 223 places, 299 transitions, 1079 flow [2024-10-11 17:10:57,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=223, PETRI_TRANSITIONS=299} [2024-10-11 17:10:57,398 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 7 predicate places. [2024-10-11 17:10:57,398 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 299 transitions, 1079 flow [2024-10-11 17:10:57,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:57,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:57,399 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1] [2024-10-11 17:10:57,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:10:57,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:10:57,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash 608904427, now seen corresponding path program 1 times [2024-10-11 17:10:57,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:57,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12806302] [2024-10-11 17:10:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:57,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:57,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:10:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:57,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:10:57,431 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-11 17:10:57,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-11 17:10:57,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-11 17:10:57,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:10:57,433 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 17:10:57,433 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:10:57,433 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 17:10:57,471 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 17:10:57,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 298 transitions, 614 flow [2024-10-11 17:10:57,514 INFO L124 PetriNetUnfolderBase]: 38/469 cut-off events. [2024-10-11 17:10:57,514 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 17:10:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 469 events. 38/469 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2180 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 345. Up to 8 conditions per place. [2024-10-11 17:10:57,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 298 transitions, 614 flow [2024-10-11 17:10:57,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 298 transitions, 614 flow [2024-10-11 17:10:57,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:10:57,524 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;@25e7846d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:10:57,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 17:10:57,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:10:57,525 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-11 17:10:57,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:57,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:57,526 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] [2024-10-11 17:10:57,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-11 17:10:57,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:57,526 INFO L85 PathProgramCache]: Analyzing trace with hash 378686603, now seen corresponding path program 1 times [2024-10-11 17:10:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:57,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750908052] [2024-10-11 17:10:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750908052] [2024-10-11 17:10:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750908052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:57,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:10:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294597264] [2024-10-11 17:10:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:57,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:57,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 298 [2024-10-11 17:10:57,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:57,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:57,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 298 [2024-10-11 17:10:57,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:03,442 INFO L124 PetriNetUnfolderBase]: 8406/45177 cut-off events. [2024-10-11 17:11:03,443 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-10-11 17:11:03,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57400 conditions, 45177 events. 8406/45177 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 636508 event pairs, 7889 based on Foata normal form. 6810/47710 useless extension candidates. Maximal degree in co-relation 42816. Up to 11992 conditions per place. [2024-10-11 17:11:03,777 INFO L140 encePairwiseOnDemand]: 272/298 looper letters, 36 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2024-10-11 17:11:03,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 280 transitions, 654 flow [2024-10-11 17:11:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2024-10-11 17:11:03,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8926174496644296 [2024-10-11 17:11:03,781 INFO L175 Difference]: Start difference. First operand has 282 places, 298 transitions, 614 flow. Second operand 3 states and 798 transitions. [2024-10-11 17:11:03,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 280 transitions, 654 flow [2024-10-11 17:11:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 280 transitions, 652 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:03,787 INFO L231 Difference]: Finished difference. Result has 283 places, 274 transitions, 574 flow [2024-10-11 17:11:03,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=283, PETRI_TRANSITIONS=274} [2024-10-11 17:11:03,788 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, 1 predicate places. [2024-10-11 17:11:03,788 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 274 transitions, 574 flow [2024-10-11 17:11:03,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:03,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:03,789 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] [2024-10-11 17:11:03,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 17:11:03,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-11 17:11:03,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1222789558, now seen corresponding path program 1 times [2024-10-11 17:11:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596878121] [2024-10-11 17:11:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596878121] [2024-10-11 17:11:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596878121] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731807839] [2024-10-11 17:11:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:03,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:03,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:11:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:03,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:11:03,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:11:03,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731807839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:03,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:03,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:11:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556351955] [2024-10-11 17:11:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:03,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:03,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2024-10-11 17:11:03,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 274 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:03,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:03,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2024-10-11 17:11:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:15,555 INFO L124 PetriNetUnfolderBase]: 25690/105475 cut-off events. [2024-10-11 17:11:15,556 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-10-11 17:11:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141819 conditions, 105475 events. 25690/105475 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 1597932 event pairs, 18666 based on Foata normal form. 0/98229 useless extension candidates. Maximal degree in co-relation 141770. Up to 35850 conditions per place. [2024-10-11 17:11:16,350 INFO L140 encePairwiseOnDemand]: 287/298 looper letters, 47 selfloop transitions, 4 changer transitions 0/279 dead transitions. [2024-10-11 17:11:16,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 696 flow [2024-10-11 17:11:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2024-10-11 17:11:16,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8299776286353467 [2024-10-11 17:11:16,352 INFO L175 Difference]: Start difference. First operand has 283 places, 274 transitions, 574 flow. Second operand 3 states and 742 transitions. [2024-10-11 17:11:16,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 696 flow [2024-10-11 17:11:16,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 279 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:16,356 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 586 flow [2024-10-11 17:11:16,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2024-10-11 17:11:16,357 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, -4 predicate places. [2024-10-11 17:11:16,357 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 586 flow [2024-10-11 17:11:16,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:16,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:16,358 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] [2024-10-11 17:11:16,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:16,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 17:11:16,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-11 17:11:16,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash -350160199, now seen corresponding path program 1 times [2024-10-11 17:11:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:16,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953985974] [2024-10-11 17:11:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:16,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953985974] [2024-10-11 17:11:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953985974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937092617] [2024-10-11 17:11:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:16,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:16,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:16,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:16,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:11:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:16,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:11:16,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:11:16,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937092617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:16,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:11:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52688986] [2024-10-11 17:11:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:16,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:16,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 298 [2024-10-11 17:11:16,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:16,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:16,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 298 [2024-10-11 17:11:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:23,446 INFO L124 PetriNetUnfolderBase]: 12695/55834 cut-off events. [2024-10-11 17:11:23,446 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-10-11 17:11:23,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 55834 events. 12695/55834 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 789927 event pairs, 10298 based on Foata normal form. 0/51146 useless extension candidates. Maximal degree in co-relation 74024. Up to 14427 conditions per place. [2024-10-11 17:11:23,989 INFO L140 encePairwiseOnDemand]: 295/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/288 dead transitions. [2024-10-11 17:11:23,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 288 transitions, 720 flow [2024-10-11 17:11:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2024-10-11 17:11:23,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8657718120805369 [2024-10-11 17:11:23,992 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 586 flow. Second operand 3 states and 774 transitions. [2024-10-11 17:11:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 288 transitions, 720 flow [2024-10-11 17:11:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 288 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:23,996 INFO L231 Difference]: Finished difference. Result has 279 places, 270 transitions, 588 flow [2024-10-11 17:11:23,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=588, PETRI_PLACES=279, PETRI_TRANSITIONS=270} [2024-10-11 17:11:23,997 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, -3 predicate places. [2024-10-11 17:11:23,997 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 270 transitions, 588 flow [2024-10-11 17:11:23,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:23,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:23,998 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] [2024-10-11 17:11:24,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:11:24,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 17:11:24,199 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-11 17:11:24,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1082500055, now seen corresponding path program 1 times [2024-10-11 17:11:24,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:24,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032939146] [2024-10-11 17:11:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:24,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032939146] [2024-10-11 17:11:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032939146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:24,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:24,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:11:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343203368] [2024-10-11 17:11:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:24,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:11:24,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:11:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:24,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 298 [2024-10-11 17:11:24,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 270 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:24,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:24,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 298 [2024-10-11 17:11:24,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand