./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_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:53:01,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:53:01,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:53:01,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:53:01,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:53:01,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:53:01,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:53:01,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:53:01,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:53:01,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:53:01,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:53:01,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:53:01,665 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:53:01,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:53:01,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:53:01,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:53:01,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:53:01,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:53:01,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:53:01,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:53:01,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:53:01,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:53:01,668 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:53:01,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:53:01,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:53:01,669 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:53:01,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:53:01,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:53:01,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:53:01,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:53:01,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:53:01,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:01,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:53:01,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:53:01,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:53:01,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:53:01,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:53:01,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:53:01,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:53:01,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:53:01,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:53:01,676 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-10-13 09:53:01,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:53:01,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:53:01,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:53:01,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:53:01,935 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:53:01,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-10-13 09:53:03,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:53:03,683 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:53:03,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-10-13 09:53:03,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba126d5de/4ca1c1b3f37c46b6a0cfc0927b4d02b5/FLAG7f9992792 [2024-10-13 09:53:03,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba126d5de/4ca1c1b3f37c46b6a0cfc0927b4d02b5 [2024-10-13 09:53:03,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:53:03,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:53:03,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:03,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:53:03,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:53:03,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:03" (1/1) ... [2024-10-13 09:53:03,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54768fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:03, skipping insertion in model container [2024-10-13 09:53:03,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:03" (1/1) ... [2024-10-13 09:53:04,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:53:04,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:04,319 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:53:04,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:04,416 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:53:04,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04 WrapperNode [2024-10-13 09:53:04,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:04,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:04,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:53:04,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:53:04,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,469 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 146 [2024-10-13 09:53:04,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:04,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:53:04,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:53:04,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:53:04,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:53:04,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:53:04,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:53:04,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:53:04,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (1/1) ... [2024-10-13 09:53:04,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:04,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:04,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:53:04,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:53:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:53:04,584 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:53:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:53:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:53:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:53:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:53:04,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:53:04,586 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:53:04,678 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:53:04,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:53:04,956 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:53:04,957 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:53:04,996 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:53:04,998 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 09:53:04,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:04 BoogieIcfgContainer [2024-10-13 09:53:04,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:53:05,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:53:05,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:53:05,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:53:05,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:53:03" (1/3) ... [2024-10-13 09:53:05,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6280404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:05, skipping insertion in model container [2024-10-13 09:53:05,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:04" (2/3) ... [2024-10-13 09:53:05,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6280404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:05, skipping insertion in model container [2024-10-13 09:53:05,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:04" (3/3) ... [2024-10-13 09:53:05,007 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-10-13 09:53:05,021 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:53:05,022 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-13 09:53:05,022 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:53:05,093 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:53:05,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 148 transitions, 303 flow [2024-10-13 09:53:05,233 INFO L124 PetriNetUnfolderBase]: 19/211 cut-off events. [2024-10-13 09:53:05,234 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:53:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 211 events. 19/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 651 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2024-10-13 09:53:05,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 148 transitions, 303 flow [2024-10-13 09:53:05,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 148 transitions, 303 flow [2024-10-13 09:53:05,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:05,281 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;@381f92dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:05,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-13 09:53:05,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:05,301 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-10-13 09:53:05,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:05,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:05,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:05,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 09:53:05,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1574672023, now seen corresponding path program 1 times [2024-10-13 09:53:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:05,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8615344] [2024-10-13 09:53:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8615344] [2024-10-13 09:53:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8615344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652745921] [2024-10-13 09:53:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:05,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:05,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:06,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 148 [2024-10-13 09:53:06,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 148 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2024-10-13 09:53:06,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:06,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 148 [2024-10-13 09:53:06,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:06,341 INFO L124 PetriNetUnfolderBase]: 109/637 cut-off events. [2024-10-13 09:53:06,342 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 09:53:06,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 637 events. 109/637 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3765 event pairs, 12 based on Foata normal form. 116/701 useless extension candidates. Maximal degree in co-relation 786. Up to 186 conditions per place. [2024-10-13 09:53:06,349 INFO L140 encePairwiseOnDemand]: 130/148 looper letters, 48 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-10-13 09:53:06,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 157 transitions, 427 flow [2024-10-13 09:53:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 720 transitions. [2024-10-13 09:53:06,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2024-10-13 09:53:06,370 INFO L175 Difference]: Start difference. First operand has 138 places, 148 transitions, 303 flow. Second operand 6 states and 720 transitions. [2024-10-13 09:53:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 157 transitions, 427 flow [2024-10-13 09:53:06,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 157 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:06,378 INFO L231 Difference]: Finished difference. Result has 140 places, 133 transitions, 283 flow [2024-10-13 09:53:06,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=140, PETRI_TRANSITIONS=133} [2024-10-13 09:53:06,384 INFO L277 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2024-10-13 09:53:06,385 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 133 transitions, 283 flow [2024-10-13 09:53:06,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2024-10-13 09:53:06,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:06,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:06,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:53:06,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 09:53:06,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1940040889, now seen corresponding path program 1 times [2024-10-13 09:53:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118810955] [2024-10-13 09:53:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118810955] [2024-10-13 09:53:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118810955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232397803] [2024-10-13 09:53:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:06,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:06,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:06,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 148 [2024-10-13 09:53:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 133 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2024-10-13 09:53:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 148 [2024-10-13 09:53:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:06,637 INFO L124 PetriNetUnfolderBase]: 48/523 cut-off events. [2024-10-13 09:53:06,638 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-13 09:53:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 523 events. 48/523 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2466 event pairs, 35 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 590. Up to 108 conditions per place. [2024-10-13 09:53:06,642 INFO L140 encePairwiseOnDemand]: 145/148 looper letters, 22 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-10-13 09:53:06,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 139 transitions, 343 flow [2024-10-13 09:53:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-10-13 09:53:06,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2024-10-13 09:53:06,645 INFO L175 Difference]: Start difference. First operand has 140 places, 133 transitions, 283 flow. Second operand 3 states and 376 transitions. [2024-10-13 09:53:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 139 transitions, 343 flow [2024-10-13 09:53:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 333 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:06,649 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 281 flow [2024-10-13 09:53:06,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-10-13 09:53:06,651 INFO L277 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2024-10-13 09:53:06,651 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 281 flow [2024-10-13 09:53:06,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2024-10-13 09:53:06,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:06,652 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] [2024-10-13 09:53:06,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:53:06,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 09:53:06,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1208707053, now seen corresponding path program 1 times [2024-10-13 09:53:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050038817] [2024-10-13 09:53:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:06,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050038817] [2024-10-13 09:53:06,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050038817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:06,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:06,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723067086] [2024-10-13 09:53:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:06,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:06,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 148 [2024-10-13 09:53:06,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2024-10-13 09:53:06,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:06,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 148 [2024-10-13 09:53:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:06,840 INFO L124 PetriNetUnfolderBase]: 91/830 cut-off events. [2024-10-13 09:53:06,841 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 09:53:06,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 830 events. 91/830 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4957 event pairs, 30 based on Foata normal form. 0/761 useless extension candidates. Maximal degree in co-relation 1010. Up to 125 conditions per place. [2024-10-13 09:53:06,846 INFO L140 encePairwiseOnDemand]: 139/148 looper letters, 30 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-10-13 09:53:06,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 146 transitions, 382 flow [2024-10-13 09:53:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2024-10-13 09:53:06,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8445945945945946 [2024-10-13 09:53:06,848 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 281 flow. Second operand 3 states and 375 transitions. [2024-10-13 09:53:06,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 146 transitions, 382 flow [2024-10-13 09:53:06,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 146 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:06,851 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 315 flow [2024-10-13 09:53:06,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-10-13 09:53:06,853 INFO L277 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2024-10-13 09:53:06,853 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 315 flow [2024-10-13 09:53:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2024-10-13 09:53:06,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:06,854 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:06,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:53:06,854 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 09:53:06,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 900544954, now seen corresponding path program 1 times [2024-10-13 09:53:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013251484] [2024-10-13 09:53:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:06,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:06,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:06,921 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:06,922 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-13 09:53:06,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-13 09:53:06,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-13 09:53:06,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-13 09:53:06,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-13 09:53:06,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-13 09:53:06,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-13 09:53:06,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-13 09:53:06,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-13 09:53:06,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-13 09:53:06,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-13 09:53:06,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-13 09:53:06,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:53:06,928 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 09:53:06,931 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:06,931 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:53:06,962 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:53:06,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 201 transitions, 418 flow [2024-10-13 09:53:07,003 INFO L124 PetriNetUnfolderBase]: 34/355 cut-off events. [2024-10-13 09:53:07,004 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:53:07,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 355 events. 34/355 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1268 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2024-10-13 09:53:07,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 201 transitions, 418 flow [2024-10-13 09:53:07,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 201 transitions, 418 flow [2024-10-13 09:53:07,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:07,012 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;@381f92dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:07,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-13 09:53:07,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:07,019 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-10-13 09:53:07,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:07,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:07,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:07,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:07,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 468291648, now seen corresponding path program 1 times [2024-10-13 09:53:07,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:07,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178536712] [2024-10-13 09:53:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:07,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:07,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178536712] [2024-10-13 09:53:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178536712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:07,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:07,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087961855] [2024-10-13 09:53:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:07,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:07,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 201 [2024-10-13 09:53:07,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 201 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-10-13 09:53:07,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:07,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 201 [2024-10-13 09:53:07,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:08,316 INFO L124 PetriNetUnfolderBase]: 1724/7651 cut-off events. [2024-10-13 09:53:08,318 INFO L125 PetriNetUnfolderBase]: For 72/89 co-relation queries the response was YES. [2024-10-13 09:53:08,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 7651 events. 1724/7651 cut-off events. For 72/89 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 79186 event pairs, 844 based on Foata normal form. 1383/8275 useless extension candidates. Maximal degree in co-relation 3207. Up to 2030 conditions per place. [2024-10-13 09:53:08,361 INFO L140 encePairwiseOnDemand]: 177/201 looper letters, 80 selfloop transitions, 5 changer transitions 0/228 dead transitions. [2024-10-13 09:53:08,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 228 transitions, 642 flow [2024-10-13 09:53:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2024-10-13 09:53:08,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8424543946932007 [2024-10-13 09:53:08,364 INFO L175 Difference]: Start difference. First operand has 186 places, 201 transitions, 418 flow. Second operand 6 states and 1016 transitions. [2024-10-13 09:53:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 228 transitions, 642 flow [2024-10-13 09:53:08,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 228 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:08,369 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 386 flow [2024-10-13 09:53:08,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2024-10-13 09:53:08,371 INFO L277 CegarLoopForPetriNet]: 186 programPoint places, 2 predicate places. [2024-10-13 09:53:08,371 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 386 flow [2024-10-13 09:53:08,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-10-13 09:53:08,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:08,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:08,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:53:08,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:08,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1248546032, now seen corresponding path program 1 times [2024-10-13 09:53:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158945950] [2024-10-13 09:53:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158945950] [2024-10-13 09:53:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158945950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:08,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:08,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:08,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46770764] [2024-10-13 09:53:08,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:08,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 201 [2024-10-13 09:53:08,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-13 09:53:08,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:08,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 201 [2024-10-13 09:53:08,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:08,898 INFO L124 PetriNetUnfolderBase]: 788/4609 cut-off events. [2024-10-13 09:53:08,898 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-10-13 09:53:08,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 4609 events. 788/4609 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 44003 event pairs, 703 based on Foata normal form. 1/4183 useless extension candidates. Maximal degree in co-relation 4654. Up to 1303 conditions per place. [2024-10-13 09:53:08,927 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 31 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-10-13 09:53:08,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 187 transitions, 468 flow [2024-10-13 09:53:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2024-10-13 09:53:08,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8325041459369817 [2024-10-13 09:53:08,929 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 386 flow. Second operand 3 states and 502 transitions. [2024-10-13 09:53:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 187 transitions, 468 flow [2024-10-13 09:53:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 187 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:08,935 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 388 flow [2024-10-13 09:53:08,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-10-13 09:53:08,938 INFO L277 CegarLoopForPetriNet]: 186 programPoint places, 0 predicate places. [2024-10-13 09:53:08,938 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 388 flow [2024-10-13 09:53:08,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-13 09:53:08,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:08,939 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] [2024-10-13 09:53:08,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:53:08,939 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:08,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1050030490, now seen corresponding path program 1 times [2024-10-13 09:53:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427812621] [2024-10-13 09:53:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:08,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:08,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:08,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427812621] [2024-10-13 09:53:08,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427812621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:08,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874320246] [2024-10-13 09:53:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:08,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:08,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:08,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 201 [2024-10-13 09:53:08,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-10-13 09:53:08,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:08,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 201 [2024-10-13 09:53:08,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:10,698 INFO L124 PetriNetUnfolderBase]: 3895/15099 cut-off events. [2024-10-13 09:53:10,698 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-10-13 09:53:10,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21639 conditions, 15099 events. 3895/15099 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 172273 event pairs, 1409 based on Foata normal form. 0/13576 useless extension candidates. Maximal degree in co-relation 21589. Up to 3516 conditions per place. [2024-10-13 09:53:10,806 INFO L140 encePairwiseOnDemand]: 182/201 looper letters, 58 selfloop transitions, 14 changer transitions 0/214 dead transitions. [2024-10-13 09:53:10,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 214 transitions, 609 flow [2024-10-13 09:53:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2024-10-13 09:53:10,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8391376451077943 [2024-10-13 09:53:10,808 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 388 flow. Second operand 3 states and 506 transitions. [2024-10-13 09:53:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 214 transitions, 609 flow [2024-10-13 09:53:10,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 214 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:53:10,813 INFO L231 Difference]: Finished difference. Result has 189 places, 195 transitions, 508 flow [2024-10-13 09:53:10,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=189, PETRI_TRANSITIONS=195} [2024-10-13 09:53:10,815 INFO L277 CegarLoopForPetriNet]: 186 programPoint places, 3 predicate places. [2024-10-13 09:53:10,815 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 195 transitions, 508 flow [2024-10-13 09:53:10,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2024-10-13 09:53:10,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:10,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:10,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:53:10,816 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:10,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 297492844, now seen corresponding path program 1 times [2024-10-13 09:53:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085670796] [2024-10-13 09:53:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:10,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085670796] [2024-10-13 09:53:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085670796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:10,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555213397] [2024-10-13 09:53:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:10,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:10,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:10,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 201 [2024-10-13 09:53:10,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 195 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2024-10-13 09:53:10,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:10,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 201 [2024-10-13 09:53:10,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:12,822 INFO L124 PetriNetUnfolderBase]: 4045/17167 cut-off events. [2024-10-13 09:53:12,822 INFO L125 PetriNetUnfolderBase]: For 4377/4541 co-relation queries the response was YES. [2024-10-13 09:53:12,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27922 conditions, 17167 events. 4045/17167 cut-off events. For 4377/4541 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 205513 event pairs, 2517 based on Foata normal form. 46/15665 useless extension candidates. Maximal degree in co-relation 26605. Up to 5540 conditions per place. [2024-10-13 09:53:12,920 INFO L140 encePairwiseOnDemand]: 192/201 looper letters, 52 selfloop transitions, 14 changer transitions 0/219 dead transitions. [2024-10-13 09:53:12,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 219 transitions, 726 flow [2024-10-13 09:53:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2024-10-13 09:53:12,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8291873963515755 [2024-10-13 09:53:12,922 INFO L175 Difference]: Start difference. First operand has 189 places, 195 transitions, 508 flow. Second operand 3 states and 500 transitions. [2024-10-13 09:53:12,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 219 transitions, 726 flow [2024-10-13 09:53:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 219 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:12,935 INFO L231 Difference]: Finished difference. Result has 191 places, 207 transitions, 606 flow [2024-10-13 09:53:12,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=191, PETRI_TRANSITIONS=207} [2024-10-13 09:53:12,938 INFO L277 CegarLoopForPetriNet]: 186 programPoint places, 5 predicate places. [2024-10-13 09:53:12,938 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 207 transitions, 606 flow [2024-10-13 09:53:12,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2024-10-13 09:53:12,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:12,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:12,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:53:12,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:12,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -698898661, now seen corresponding path program 1 times [2024-10-13 09:53:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458961987] [2024-10-13 09:53:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458961987] [2024-10-13 09:53:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458961987] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:53:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337938052] [2024-10-13 09:53:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:13,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:13,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:13,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:53:13,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:53:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:13,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:53:13,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:53:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:13,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:53:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337938052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:53:13,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:53:13,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:53:13,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406785582] [2024-10-13 09:53:13,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:53:13,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:53:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:53:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:53:13,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 201 [2024-10-13 09:53:13,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 207 transitions, 606 flow. Second operand has 10 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 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) [2024-10-13 09:53:13,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:13,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 201 [2024-10-13 09:53:13,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:13,760 INFO L124 PetriNetUnfolderBase]: 864/4121 cut-off events. [2024-10-13 09:53:13,760 INFO L125 PetriNetUnfolderBase]: For 664/708 co-relation queries the response was YES. [2024-10-13 09:53:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6709 conditions, 4121 events. 864/4121 cut-off events. For 664/708 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 39253 event pairs, 123 based on Foata normal form. 104/3934 useless extension candidates. Maximal degree in co-relation 3159. Up to 434 conditions per place. [2024-10-13 09:53:13,781 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 72 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2024-10-13 09:53:13,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 210 transitions, 724 flow [2024-10-13 09:53:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:53:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:53:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1458 transitions. [2024-10-13 09:53:13,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8059701492537313 [2024-10-13 09:53:13,784 INFO L175 Difference]: Start difference. First operand has 191 places, 207 transitions, 606 flow. Second operand 9 states and 1458 transitions. [2024-10-13 09:53:13,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 210 transitions, 724 flow [2024-10-13 09:53:13,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 210 transitions, 704 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:13,789 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 448 flow [2024-10-13 09:53:13,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2024-10-13 09:53:13,789 INFO L277 CegarLoopForPetriNet]: 186 programPoint places, -36 predicate places. [2024-10-13 09:53:13,790 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 448 flow [2024-10-13 09:53:13,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 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) [2024-10-13 09:53:13,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:13,791 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:13,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:53:13,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:13,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-13 09:53:13,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1777973031, now seen corresponding path program 1 times [2024-10-13 09:53:13,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:13,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931920861] [2024-10-13 09:53:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:13,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:14,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:14,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:14,042 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-13 09:53:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-13 09:53:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-13 09:53:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-13 09:53:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-13 09:53:14,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-13 09:53:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-13 09:53:14,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:53:14,046 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-13 09:53:14,047 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:14,047 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:53:14,076 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 09:53:14,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 254 transitions, 535 flow [2024-10-13 09:53:14,122 INFO L124 PetriNetUnfolderBase]: 54/544 cut-off events. [2024-10-13 09:53:14,122 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 09:53:14,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 544 events. 54/544 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2105 event pairs, 1 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 363. Up to 16 conditions per place. [2024-10-13 09:53:14,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 254 transitions, 535 flow [2024-10-13 09:53:14,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 254 transitions, 535 flow [2024-10-13 09:53:14,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:14,133 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;@381f92dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:14,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-13 09:53:14,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:14,135 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-10-13 09:53:14,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:14,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:14,136 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:14,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-13 09:53:14,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1805282686, now seen corresponding path program 1 times [2024-10-13 09:53:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325351644] [2024-10-13 09:53:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325351644] [2024-10-13 09:53:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325351644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657755178] [2024-10-13 09:53:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:14,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:14,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:14,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 254 [2024-10-13 09:53:14,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 254 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 184.5) internal successors, (1107), 6 states have internal predecessors, (1107), 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) [2024-10-13 09:53:14,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:14,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 254 [2024-10-13 09:53:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:20,805 INFO L124 PetriNetUnfolderBase]: 19556/52155 cut-off events. [2024-10-13 09:53:20,805 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-10-13 09:53:20,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80512 conditions, 52155 events. 19556/52155 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 638028 event pairs, 2086 based on Foata normal form. 15316/63891 useless extension candidates. Maximal degree in co-relation 9041. Up to 20053 conditions per place. [2024-10-13 09:53:21,143 INFO L140 encePairwiseOnDemand]: 224/254 looper letters, 112 selfloop transitions, 5 changer transitions 0/299 dead transitions. [2024-10-13 09:53:21,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 299 transitions, 859 flow [2024-10-13 09:53:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1312 transitions. [2024-10-13 09:53:21,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8608923884514436 [2024-10-13 09:53:21,148 INFO L175 Difference]: Start difference. First operand has 234 places, 254 transitions, 535 flow. Second operand 6 states and 1312 transitions. [2024-10-13 09:53:21,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 299 transitions, 859 flow [2024-10-13 09:53:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 299 transitions, 859 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:21,153 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 491 flow [2024-10-13 09:53:21,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2024-10-13 09:53:21,155 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 2 predicate places. [2024-10-13 09:53:21,155 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 491 flow [2024-10-13 09:53:21,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.5) internal successors, (1107), 6 states have internal predecessors, (1107), 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) [2024-10-13 09:53:21,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:21,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:21,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:53:21,156 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-13 09:53:21,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1709430226, now seen corresponding path program 1 times [2024-10-13 09:53:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:21,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564687999] [2024-10-13 09:53:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564687999] [2024-10-13 09:53:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564687999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:21,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939187659] [2024-10-13 09:53:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:21,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 254 [2024-10-13 09:53:21,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-10-13 09:53:21,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:21,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 254 [2024-10-13 09:53:21,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:25,649 INFO L124 PetriNetUnfolderBase]: 8936/36954 cut-off events. [2024-10-13 09:53:25,650 INFO L125 PetriNetUnfolderBase]: For 2308/2308 co-relation queries the response was YES. [2024-10-13 09:53:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52071 conditions, 36954 events. 8936/36954 cut-off events. For 2308/2308 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 487394 event pairs, 8324 based on Foata normal form. 1/33970 useless extension candidates. Maximal degree in co-relation 6218. Up to 12753 conditions per place. [2024-10-13 09:53:25,936 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 39 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2024-10-13 09:53:25,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 234 transitions, 589 flow [2024-10-13 09:53:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2024-10-13 09:53:25,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8228346456692913 [2024-10-13 09:53:25,940 INFO L175 Difference]: Start difference. First operand has 236 places, 227 transitions, 491 flow. Second operand 3 states and 627 transitions. [2024-10-13 09:53:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 234 transitions, 589 flow [2024-10-13 09:53:25,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 234 transitions, 577 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:25,948 INFO L231 Difference]: Finished difference. Result has 234 places, 228 transitions, 493 flow [2024-10-13 09:53:25,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=234, PETRI_TRANSITIONS=228} [2024-10-13 09:53:25,949 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, 0 predicate places. [2024-10-13 09:53:25,950 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 228 transitions, 493 flow [2024-10-13 09:53:25,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-10-13 09:53:25,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:25,950 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] [2024-10-13 09:53:25,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:53:25,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-13 09:53:25,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1085180711, now seen corresponding path program 1 times [2024-10-13 09:53:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97267409] [2024-10-13 09:53:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97267409] [2024-10-13 09:53:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97267409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:25,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377882007] [2024-10-13 09:53:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:25,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:26,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 254 [2024-10-13 09:53:26,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 228 transitions, 493 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2024-10-13 09:53:26,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:26,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 254 [2024-10-13 09:53:26,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand