./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_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:10:52,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:10:53,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:10:53,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:10:53,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:10:53,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:10:53,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:10:53,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:10:53,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:10:53,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:10:53,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:10:53,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:10:53,039 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:10:53,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:10:53,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:10:53,041 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:10:53,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:10:53,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:10:53,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:10:53,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:10:53,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:10:53,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:10:53,043 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:10:53,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:10:53,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:10:53,046 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:10:53,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:10:53,047 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:10:53,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:10:53,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:10:53,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:10:53,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:10:53,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:10:53,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:10:53,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:10:53,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:10:53,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:10:53,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:10:53,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:10:53,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:10:53,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:10:53,053 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2024-10-11 17:10:53,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:10:53,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:10:53,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:10:53,328 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:10:53,330 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:10:53,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-11 17:10:54,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:10:54,995 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:10:54,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-10-11 17:10:55,014 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/86f039ea5/8eec31b1cda142c08ebb901edb84874a/FLAGa24ae01e9 [2024-10-11 17:10:55,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/86f039ea5/8eec31b1cda142c08ebb901edb84874a [2024-10-11 17:10:55,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:10:55,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:10:55,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:10:55,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:10:55,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:10:55,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191892c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55, skipping insertion in model container [2024-10-11 17:10:55,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:10:55,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:10:55,561 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:10:55,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:10:55,746 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:10:55,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55 WrapperNode [2024-10-11 17:10:55,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:10:55,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:10:55,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:10:55,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:10:55,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,836 INFO L138 Inliner]: procedures = 274, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 174 [2024-10-11 17:10:55,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:10:55,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:10:55,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:10:55,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:10:55,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:10:55,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:10:55,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:10:55,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:10:55,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (1/1) ... [2024-10-11 17:10:55,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:10:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:55,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:10:55,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:10:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:10:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:10:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:10:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:10:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:10:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:10:55,963 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:10:56,083 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:10:56,085 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:10:56,326 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:10:56,326 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:10:56,377 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:10:56,377 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 17:10:56,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:56 BoogieIcfgContainer [2024-10-11 17:10:56,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:10:56,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:10:56,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:10:56,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:10:56,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:10:55" (1/3) ... [2024-10-11 17:10:56,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dfe3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:56, skipping insertion in model container [2024-10-11 17:10:56,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:55" (2/3) ... [2024-10-11 17:10:56,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dfe3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:56, skipping insertion in model container [2024-10-11 17:10:56,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:56" (3/3) ... [2024-10-11 17:10:56,390 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-10-11 17:10:56,404 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:10:56,404 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-10-11 17:10:56,405 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:10:56,464 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 17:10:56,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 171 transitions, 349 flow [2024-10-11 17:10:56,583 INFO L124 PetriNetUnfolderBase]: 19/240 cut-off events. [2024-10-11 17:10:56,583 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:10:56,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 240 events. 19/240 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 725 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 132. Up to 4 conditions per place. [2024-10-11 17:10:56,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 171 transitions, 349 flow [2024-10-11 17:10:56,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 171 transitions, 349 flow [2024-10-11 17:10:56,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:10:56,617 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;@368daa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:10:56,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-11 17:10:56,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:10:56,632 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-11 17:10:56,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:56,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:56,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:10:56,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-11 17:10:56,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1651008537, now seen corresponding path program 1 times [2024-10-11 17:10:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:56,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898924517] [2024-10-11 17:10:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:56,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:56,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898924517] [2024-10-11 17:10:56,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898924517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:56,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:56,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:10:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135909082] [2024-10-11 17:10:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:56,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:57,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 171 [2024-10-11 17:10:57,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 171 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:57,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:57,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 171 [2024-10-11 17:10:57,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:57,357 INFO L124 PetriNetUnfolderBase]: 80/760 cut-off events. [2024-10-11 17:10:57,357 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 17:10:57,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 760 events. 80/760 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4142 event pairs, 72 based on Foata normal form. 77/757 useless extension candidates. Maximal degree in co-relation 872. Up to 174 conditions per place. [2024-10-11 17:10:57,370 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 28 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2024-10-11 17:10:57,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 165 transitions, 397 flow [2024-10-11 17:10:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2024-10-11 17:10:57,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8927875243664717 [2024-10-11 17:10:57,392 INFO L175 Difference]: Start difference. First operand has 161 places, 171 transitions, 349 flow. Second operand 3 states and 458 transitions. [2024-10-11 17:10:57,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 165 transitions, 397 flow [2024-10-11 17:10:57,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 165 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:10:57,402 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 329 flow [2024-10-11 17:10:57,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-10-11 17:10:57,410 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 1 predicate places. [2024-10-11 17:10:57,411 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 329 flow [2024-10-11 17:10:57,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:57,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:57,411 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] [2024-10-11 17:10:57,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:10:57,412 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-11 17:10:57,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash -93254137, now seen corresponding path program 1 times [2024-10-11 17:10:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:57,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176173973] [2024-10-11 17:10:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176173973] [2024-10-11 17:10:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176173973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:10:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653230794] [2024-10-11 17:10:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:58,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:10:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:10:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:58,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 171 [2024-10-11 17:10:58,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:58,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:58,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 171 [2024-10-11 17:10:58,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:58,452 INFO L124 PetriNetUnfolderBase]: 160/1001 cut-off events. [2024-10-11 17:10:58,452 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 17:10:58,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 1001 events. 160/1001 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6346 event pairs, 119 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1302. Up to 267 conditions per place. [2024-10-11 17:10:58,460 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 60 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-10-11 17:10:58,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 188 transitions, 521 flow [2024-10-11 17:10:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:10:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:10:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 810 transitions. [2024-10-11 17:10:58,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2024-10-11 17:10:58,465 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 329 flow. Second operand 6 states and 810 transitions. [2024-10-11 17:10:58,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 188 transitions, 521 flow [2024-10-11 17:10:58,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:10:58,470 INFO L231 Difference]: Finished difference. Result has 164 places, 156 transitions, 333 flow [2024-10-11 17:10:58,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=164, PETRI_TRANSITIONS=156} [2024-10-11 17:10:58,472 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2024-10-11 17:10:58,472 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 156 transitions, 333 flow [2024-10-11 17:10:58,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:58,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:58,473 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] [2024-10-11 17:10:58,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:10:58,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-11 17:10:58,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash 486750784, now seen corresponding path program 1 times [2024-10-11 17:10:58,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:58,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332524212] [2024-10-11 17:10:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332524212] [2024-10-11 17:10:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332524212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:10:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587986046] [2024-10-11 17:10:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:58,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:58,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:58,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 171 [2024-10-11 17:10:58,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 156 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:58,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:58,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 171 [2024-10-11 17:10:58,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:58,725 INFO L124 PetriNetUnfolderBase]: 114/1094 cut-off events. [2024-10-11 17:10:58,725 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 17:10:58,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 1094 events. 114/1094 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7132 event pairs, 28 based on Foata normal form. 0/986 useless extension candidates. Maximal degree in co-relation 1308. Up to 133 conditions per place. [2024-10-11 17:10:58,733 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 33 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2024-10-11 17:10:58,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 172 transitions, 440 flow [2024-10-11 17:10:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2024-10-11 17:10:58,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791423001949318 [2024-10-11 17:10:58,736 INFO L175 Difference]: Start difference. First operand has 164 places, 156 transitions, 333 flow. Second operand 3 states and 451 transitions. [2024-10-11 17:10:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 172 transitions, 440 flow [2024-10-11 17:10:58,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 172 transitions, 430 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 17:10:58,743 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 345 flow [2024-10-11 17:10:58,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2024-10-11 17:10:58,744 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 2 predicate places. [2024-10-11 17:10:58,744 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 345 flow [2024-10-11 17:10:58,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:58,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:58,745 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] [2024-10-11 17:10:58,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 17:10:58,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-11 17:10:58,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1751458660, now seen corresponding path program 1 times [2024-10-11 17:10:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407630952] [2024-10-11 17:10:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407630952] [2024-10-11 17:10:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407630952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:10:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359384216] [2024-10-11 17:10:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:58,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:10:58,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:10:58,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:10:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:58,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:10:58,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:10:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:10:58,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:10:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359384216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:58,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:10:58,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:10:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493009870] [2024-10-11 17:10:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:58,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:58,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:10:59,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 171 [2024-10-11 17:10:59,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:59,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:59,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 171 [2024-10-11 17:10:59,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:10:59,183 INFO L124 PetriNetUnfolderBase]: 183/1447 cut-off events. [2024-10-11 17:10:59,183 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-11 17:10:59,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1447 events. 183/1447 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10356 event pairs, 136 based on Foata normal form. 0/1289 useless extension candidates. Maximal degree in co-relation 1853. Up to 345 conditions per place. [2024-10-11 17:10:59,191 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 5 changer transitions 0/169 dead transitions. [2024-10-11 17:10:59,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 169 transitions, 443 flow [2024-10-11 17:10:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:10:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:10:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2024-10-11 17:10:59,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2024-10-11 17:10:59,193 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 345 flow. Second operand 3 states and 438 transitions. [2024-10-11 17:10:59,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 169 transitions, 443 flow [2024-10-11 17:10:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:10:59,197 INFO L231 Difference]: Finished difference. Result has 165 places, 161 transitions, 375 flow [2024-10-11 17:10:59,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=165, PETRI_TRANSITIONS=161} [2024-10-11 17:10:59,199 INFO L277 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2024-10-11 17:10:59,200 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 161 transitions, 375 flow [2024-10-11 17:10:59,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:59,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:59,200 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:10:59,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:10:59,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:10:59,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2024-10-11 17:10:59,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1808286681, now seen corresponding path program 1 times [2024-10-11 17:10:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381569556] [2024-10-11 17:10:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:59,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:10:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:10:59,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:10:59,462 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:10:59,463 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-11 17:10:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-11 17:10:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-11 17:10:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-11 17:10:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-11 17:10:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-11 17:10:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-11 17:10:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-11 17:10:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-11 17:10:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-11 17:10:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-11 17:10:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-11 17:10:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-11 17:10:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-11 17:10:59,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-11 17:10:59,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 17:10:59,468 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 17:10:59,471 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:10:59,471 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 17:10:59,510 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 17:10:59,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 233 transitions, 482 flow [2024-10-11 17:10:59,560 INFO L124 PetriNetUnfolderBase]: 34/399 cut-off events. [2024-10-11 17:10:59,560 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 17:10:59,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 399 events. 34/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1453 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2024-10-11 17:10:59,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 233 transitions, 482 flow [2024-10-11 17:10:59,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 233 transitions, 482 flow [2024-10-11 17:10:59,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:10:59,572 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;@368daa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:10:59,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-11 17:10:59,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:10:59,579 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-11 17:10:59,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:10:59,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:10:59,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:10:59,580 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:10:59,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:10:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1746441808, now seen corresponding path program 1 times [2024-10-11 17:10:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:10:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414361651] [2024-10-11 17:10:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:10:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:10:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:10:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:10:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:10:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414361651] [2024-10-11 17:10:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414361651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:10:59,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:10:59,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:10:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038477164] [2024-10-11 17:10:59,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:10:59,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:10:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:10:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:10:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:10:59,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 233 [2024-10-11 17:10:59,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:10:59,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:10:59,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 233 [2024-10-11 17:10:59,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:00,865 INFO L124 PetriNetUnfolderBase]: 1626/8204 cut-off events. [2024-10-11 17:11:00,865 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-10-11 17:11:00,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 8204 events. 1626/8204 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 86511 event pairs, 1608 based on Foata normal form. 1200/8606 useless extension candidates. Maximal degree in co-relation 9757. Up to 2629 conditions per place. [2024-10-11 17:11:00,919 INFO L140 encePairwiseOnDemand]: 212/233 looper letters, 39 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2024-10-11 17:11:00,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 542 flow [2024-10-11 17:11:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2024-10-11 17:11:00,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.876967095851216 [2024-10-11 17:11:00,922 INFO L175 Difference]: Start difference. First operand has 218 places, 233 transitions, 482 flow. Second operand 3 states and 613 transitions. [2024-10-11 17:11:00,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 542 flow [2024-10-11 17:11:00,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 222 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:00,928 INFO L231 Difference]: Finished difference. Result has 219 places, 214 transitions, 454 flow [2024-10-11 17:11:00,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=219, PETRI_TRANSITIONS=214} [2024-10-11 17:11:00,929 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 1 predicate places. [2024-10-11 17:11:00,929 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 214 transitions, 454 flow [2024-10-11 17:11:00,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:00,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:00,930 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] [2024-10-11 17:11:00,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 17:11:00,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:00,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 681389904, now seen corresponding path program 1 times [2024-10-11 17:11:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:00,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404937505] [2024-10-11 17:11:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:01,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:01,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404937505] [2024-10-11 17:11:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404937505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:01,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:01,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:11:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146409880] [2024-10-11 17:11:01,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:01,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:11:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:11:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:01,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 233 [2024-10-11 17:11:01,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 214 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:01,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:01,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 233 [2024-10-11 17:11:01,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:03,080 INFO L124 PetriNetUnfolderBase]: 3186/12501 cut-off events. [2024-10-11 17:11:03,080 INFO L125 PetriNetUnfolderBase]: For 205/232 co-relation queries the response was YES. [2024-10-11 17:11:03,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17820 conditions, 12501 events. 3186/12501 cut-off events. For 205/232 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 136788 event pairs, 1571 based on Foata normal form. 0/11360 useless extension candidates. Maximal degree in co-relation 17660. Up to 3779 conditions per place. [2024-10-11 17:11:03,172 INFO L140 encePairwiseOnDemand]: 227/233 looper letters, 102 selfloop transitions, 6 changer transitions 0/277 dead transitions. [2024-10-11 17:11:03,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 796 flow [2024-10-11 17:11:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:11:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:11:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2024-10-11 17:11:03,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8068669527896996 [2024-10-11 17:11:03,175 INFO L175 Difference]: Start difference. First operand has 219 places, 214 transitions, 454 flow. Second operand 6 states and 1128 transitions. [2024-10-11 17:11:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 796 flow [2024-10-11 17:11:03,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 277 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:03,183 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 462 flow [2024-10-11 17:11:03,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-10-11 17:11:03,184 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 4 predicate places. [2024-10-11 17:11:03,184 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 462 flow [2024-10-11 17:11:03,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:03,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:03,185 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] [2024-10-11 17:11:03,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:11:03,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:03,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:03,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1313761892, now seen corresponding path program 1 times [2024-10-11 17:11:03,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433523832] [2024-10-11 17:11:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:03,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433523832] [2024-10-11 17:11:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433523832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:11:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445555236] [2024-10-11 17:11:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:03,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:03,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 233 [2024-10-11 17:11:03,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:03,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:03,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 233 [2024-10-11 17:11:03,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:04,890 INFO L124 PetriNetUnfolderBase]: 3293/15658 cut-off events. [2024-10-11 17:11:04,890 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-11 17:11:04,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21168 conditions, 15658 events. 3293/15658 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 186376 event pairs, 880 based on Foata normal form. 0/14062 useless extension candidates. Maximal degree in co-relation 19742. Up to 3072 conditions per place. [2024-10-11 17:11:04,978 INFO L140 encePairwiseOnDemand]: 226/233 looper letters, 58 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-10-11 17:11:04,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 243 transitions, 659 flow [2024-10-11 17:11:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2024-10-11 17:11:04,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8698140200286123 [2024-10-11 17:11:04,981 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 462 flow. Second operand 3 states and 608 transitions. [2024-10-11 17:11:04,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 243 transitions, 659 flow [2024-10-11 17:11:04,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 243 transitions, 647 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 17:11:04,987 INFO L231 Difference]: Finished difference. Result has 221 places, 218 transitions, 494 flow [2024-10-11 17:11:04,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=221, PETRI_TRANSITIONS=218} [2024-10-11 17:11:04,988 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 3 predicate places. [2024-10-11 17:11:04,989 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 218 transitions, 494 flow [2024-10-11 17:11:04,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:04,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:04,990 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] [2024-10-11 17:11:04,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:11:04,990 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:04,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1293151895, now seen corresponding path program 1 times [2024-10-11 17:11:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:04,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048186312] [2024-10-11 17:11:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:04,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048186312] [2024-10-11 17:11:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048186312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765423622] [2024-10-11 17:11:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:05,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:05,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:05,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:05,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:11:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:05,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 17:11:05,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:11:05,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765423622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:05,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:05,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-11 17:11:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689153504] [2024-10-11 17:11:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:05,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:05,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 233 [2024-10-11 17:11:05,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:05,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:05,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 233 [2024-10-11 17:11:05,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:07,472 INFO L124 PetriNetUnfolderBase]: 4920/20847 cut-off events. [2024-10-11 17:11:07,473 INFO L125 PetriNetUnfolderBase]: For 1504/1525 co-relation queries the response was YES. [2024-10-11 17:11:07,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 20847 events. 4920/20847 cut-off events. For 1504/1525 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 255676 event pairs, 3516 based on Foata normal form. 16/18724 useless extension candidates. Maximal degree in co-relation 28253. Up to 6750 conditions per place. [2024-10-11 17:11:07,582 INFO L140 encePairwiseOnDemand]: 227/233 looper letters, 52 selfloop transitions, 8 changer transitions 0/240 dead transitions. [2024-10-11 17:11:07,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 240 transitions, 670 flow [2024-10-11 17:11:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2024-10-11 17:11:07,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8483547925608012 [2024-10-11 17:11:07,585 INFO L175 Difference]: Start difference. First operand has 221 places, 218 transitions, 494 flow. Second operand 3 states and 593 transitions. [2024-10-11 17:11:07,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 240 transitions, 670 flow [2024-10-11 17:11:07,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 240 transitions, 656 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:11:07,593 INFO L231 Difference]: Finished difference. Result has 223 places, 224 transitions, 550 flow [2024-10-11 17:11:07,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2024-10-11 17:11:07,594 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, 5 predicate places. [2024-10-11 17:11:07,594 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 550 flow [2024-10-11 17:11:07,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:07,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:07,595 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] [2024-10-11 17:11:07,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:07,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:07,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:07,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash 145776852, now seen corresponding path program 1 times [2024-10-11 17:11:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:07,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791623903] [2024-10-11 17:11:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:07,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791623903] [2024-10-11 17:11:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791623903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103710658] [2024-10-11 17:11:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:07,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:07,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:07,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:11:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:08,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:11:08,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:08,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:08,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103710658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:08,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:08,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:11:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014117552] [2024-10-11 17:11:08,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:08,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:11:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:11:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:11:08,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 233 [2024-10-11 17:11:08,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 550 flow. Second operand has 10 states, 10 states have (on average 181.3) internal successors, (1813), 10 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:08,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:08,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 233 [2024-10-11 17:11:08,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:08,844 INFO L124 PetriNetUnfolderBase]: 781/3941 cut-off events. [2024-10-11 17:11:08,844 INFO L125 PetriNetUnfolderBase]: For 319/325 co-relation queries the response was YES. [2024-10-11 17:11:08,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 3941 events. 781/3941 cut-off events. For 319/325 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 35463 event pairs, 81 based on Foata normal form. 111/3824 useless extension candidates. Maximal degree in co-relation 5473. Up to 548 conditions per place. [2024-10-11 17:11:08,860 INFO L140 encePairwiseOnDemand]: 228/233 looper letters, 94 selfloop transitions, 7 changer transitions 0/234 dead transitions. [2024-10-11 17:11:08,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 234 transitions, 706 flow [2024-10-11 17:11:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:11:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:11:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1714 transitions. [2024-10-11 17:11:08,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8173581306628517 [2024-10-11 17:11:08,865 INFO L175 Difference]: Start difference. First operand has 223 places, 224 transitions, 550 flow. Second operand 9 states and 1714 transitions. [2024-10-11 17:11:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 234 transitions, 706 flow [2024-10-11 17:11:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 234 transitions, 698 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:08,870 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 362 flow [2024-10-11 17:11:08,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2024-10-11 17:11:08,871 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, -45 predicate places. [2024-10-11 17:11:08,872 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 362 flow [2024-10-11 17:11:08,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.3) internal successors, (1813), 10 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:08,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:08,873 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] [2024-10-11 17:11:08,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:09,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:09,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:09,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 707830921, now seen corresponding path program 1 times [2024-10-11 17:11:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202597829] [2024-10-11 17:11:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202597829] [2024-10-11 17:11:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202597829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:11:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428713055] [2024-10-11 17:11:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:09,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 233 [2024-10-11 17:11:09,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:09,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:09,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 233 [2024-10-11 17:11:09,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:09,329 INFO L124 PetriNetUnfolderBase]: 283/1447 cut-off events. [2024-10-11 17:11:09,330 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 17:11:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 1447 events. 283/1447 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9621 event pairs, 139 based on Foata normal form. 0/1338 useless extension candidates. Maximal degree in co-relation 2145. Up to 377 conditions per place. [2024-10-11 17:11:09,337 INFO L140 encePairwiseOnDemand]: 217/233 looper letters, 51 selfloop transitions, 12 changer transitions 0/189 dead transitions. [2024-10-11 17:11:09,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 189 transitions, 551 flow [2024-10-11 17:11:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2024-10-11 17:11:09,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.821173104434907 [2024-10-11 17:11:09,340 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 362 flow. Second operand 3 states and 574 transitions. [2024-10-11 17:11:09,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 189 transitions, 551 flow [2024-10-11 17:11:09,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 189 transitions, 536 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-11 17:11:09,344 INFO L231 Difference]: Finished difference. Result has 172 places, 172 transitions, 451 flow [2024-10-11 17:11:09,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=172, PETRI_TRANSITIONS=172} [2024-10-11 17:11:09,345 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, -46 predicate places. [2024-10-11 17:11:09,345 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 172 transitions, 451 flow [2024-10-11 17:11:09,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:09,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:09,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:09,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 17:11:09,346 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:09,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1555914674, now seen corresponding path program 1 times [2024-10-11 17:11:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:09,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912598758] [2024-10-11 17:11:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:09,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912598758] [2024-10-11 17:11:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912598758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:11:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580974975] [2024-10-11 17:11:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:09,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:09,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:09,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 233 [2024-10-11 17:11:09,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:09,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:09,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 233 [2024-10-11 17:11:09,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:09,605 INFO L124 PetriNetUnfolderBase]: 324/1573 cut-off events. [2024-10-11 17:11:09,605 INFO L125 PetriNetUnfolderBase]: For 558/579 co-relation queries the response was YES. [2024-10-11 17:11:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 1573 events. 324/1573 cut-off events. For 558/579 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10855 event pairs, 206 based on Foata normal form. 6/1489 useless extension candidates. Maximal degree in co-relation 2804. Up to 602 conditions per place. [2024-10-11 17:11:09,618 INFO L140 encePairwiseOnDemand]: 225/233 looper letters, 47 selfloop transitions, 10 changer transitions 0/189 dead transitions. [2024-10-11 17:11:09,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 189 transitions, 624 flow [2024-10-11 17:11:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2024-10-11 17:11:09,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8111587982832618 [2024-10-11 17:11:09,621 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 451 flow. Second operand 3 states and 567 transitions. [2024-10-11 17:11:09,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 189 transitions, 624 flow [2024-10-11 17:11:09,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 189 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:11:09,627 INFO L231 Difference]: Finished difference. Result has 174 places, 180 transitions, 513 flow [2024-10-11 17:11:09,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=174, PETRI_TRANSITIONS=180} [2024-10-11 17:11:09,628 INFO L277 CegarLoopForPetriNet]: 218 programPoint places, -44 predicate places. [2024-10-11 17:11:09,628 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 180 transitions, 513 flow [2024-10-11 17:11:09,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:09,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:09,629 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:09,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 17:11:09,630 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 17:11:09,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2090280071, now seen corresponding path program 1 times [2024-10-11 17:11:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:09,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742588325] [2024-10-11 17:11:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:09,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:11:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:09,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:11:09,679 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:11:09,679 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-10-11 17:11:09,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-10-11 17:11:09,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-10-11 17:11:09,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-10-11 17:11:09,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-10-11 17:11:09,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-10-11 17:11:09,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 17:11:09,684 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:09,684 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:11:09,684 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 17:11:09,725 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 17:11:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 295 transitions, 617 flow [2024-10-11 17:11:09,816 INFO L124 PetriNetUnfolderBase]: 54/603 cut-off events. [2024-10-11 17:11:09,816 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 17:11:09,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 603 events. 54/603 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2452 event pairs, 1 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2024-10-11 17:11:09,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 295 transitions, 617 flow [2024-10-11 17:11:09,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 295 transitions, 617 flow [2024-10-11 17:11:09,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:11:09,834 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;@368daa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:11:09,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-11 17:11:09,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:11:09,839 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-11 17:11:09,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:11:09,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:09,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:09,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 17:11:09,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2044299785, now seen corresponding path program 1 times [2024-10-11 17:11:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149119390] [2024-10-11 17:11:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:09,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:09,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149119390] [2024-10-11 17:11:09,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149119390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:09,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:09,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:11:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191150382] [2024-10-11 17:11:09,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:09,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:09,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:09,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 295 [2024-10-11 17:11:09,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 295 transitions, 617 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:09,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:09,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 295 [2024-10-11 17:11:09,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:20,826 INFO L124 PetriNetUnfolderBase]: 23207/84571 cut-off events. [2024-10-11 17:11:20,827 INFO L125 PetriNetUnfolderBase]: For 3577/3577 co-relation queries the response was YES. [2024-10-11 17:11:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117809 conditions, 84571 events. 23207/84571 cut-off events. For 3577/3577 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 1205827 event pairs, 23089 based on Foata normal form. 15261/92664 useless extension candidates. Maximal degree in co-relation 11668. Up to 32571 conditions per place. [2024-10-11 17:11:21,555 INFO L140 encePairwiseOnDemand]: 268/295 looper letters, 49 selfloop transitions, 2 changer transitions 0/278 dead transitions. [2024-10-11 17:11:21,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 278 transitions, 685 flow [2024-10-11 17:11:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2024-10-11 17:11:21,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2024-10-11 17:11:21,558 INFO L175 Difference]: Start difference. First operand has 275 places, 295 transitions, 617 flow. Second operand 3 states and 767 transitions. [2024-10-11 17:11:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 278 transitions, 685 flow [2024-10-11 17:11:21,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 278 transitions, 685 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:21,563 INFO L231 Difference]: Finished difference. Result has 276 places, 270 transitions, 577 flow [2024-10-11 17:11:21,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=276, PETRI_TRANSITIONS=270} [2024-10-11 17:11:21,564 INFO L277 CegarLoopForPetriNet]: 275 programPoint places, 1 predicate places. [2024-10-11 17:11:21,564 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 270 transitions, 577 flow [2024-10-11 17:11:21,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:21,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:21,565 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] [2024-10-11 17:11:21,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 17:11:21,566 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 17:11:21,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash -89004521, now seen corresponding path program 1 times [2024-10-11 17:11:21,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:21,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925192634] [2024-10-11 17:11:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:21,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925192634] [2024-10-11 17:11:21,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925192634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:21,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:11:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231612846] [2024-10-11 17:11:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:21,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:11:21,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:11:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:11:21,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 295 [2024-10-11 17:11:21,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 270 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:21,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:21,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 295 [2024-10-11 17:11:21,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:38,767 INFO L124 PetriNetUnfolderBase]: 45759/134050 cut-off events. [2024-10-11 17:11:38,767 INFO L125 PetriNetUnfolderBase]: For 2241/2511 co-relation queries the response was YES. [2024-10-11 17:11:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199925 conditions, 134050 events. 45759/134050 cut-off events. For 2241/2511 co-relation queries the response was YES. Maximal size of possible extension queue 2469. Compared 1894740 event pairs, 18259 based on Foata normal form. 0/122707 useless extension candidates. Maximal degree in co-relation 199764. Up to 47540 conditions per place. [2024-10-11 17:11:39,762 INFO L140 encePairwiseOnDemand]: 289/295 looper letters, 144 selfloop transitions, 6 changer transitions 0/365 dead transitions. [2024-10-11 17:11:39,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 365 transitions, 1067 flow [2024-10-11 17:11:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:11:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:11:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1446 transitions. [2024-10-11 17:11:39,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8169491525423729 [2024-10-11 17:11:39,766 INFO L175 Difference]: Start difference. First operand has 276 places, 270 transitions, 577 flow. Second operand 6 states and 1446 transitions. [2024-10-11 17:11:39,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 365 transitions, 1067 flow [2024-10-11 17:11:39,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 365 transitions, 1065 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:39,781 INFO L231 Difference]: Finished difference. Result has 279 places, 269 transitions, 585 flow [2024-10-11 17:11:39,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=279, PETRI_TRANSITIONS=269} [2024-10-11 17:11:39,782 INFO L277 CegarLoopForPetriNet]: 275 programPoint places, 4 predicate places. [2024-10-11 17:11:39,782 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 269 transitions, 585 flow [2024-10-11 17:11:39,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:39,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:39,783 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] [2024-10-11 17:11:39,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 17:11:39,783 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 17:11:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash 773349304, now seen corresponding path program 1 times [2024-10-11 17:11:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718182988] [2024-10-11 17:11:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718182988] [2024-10-11 17:11:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718182988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:39,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:39,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:11:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49678169] [2024-10-11 17:11:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:39,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:39,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 295 [2024-10-11 17:11:39,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 269 transitions, 585 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:11:39,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:39,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 295 [2024-10-11 17:11:39,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand