./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.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/pthread-ext/35_double_lock_p3_vs-pthread.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 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:50:15,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:50:15,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:50:15,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:50:15,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:50:15,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:50:15,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:50:15,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:50:15,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:50:15,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:50:15,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:50:15,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:50:15,192 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:50:15,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:50:15,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:50:15,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:50:15,192 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:50:15,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:50:15,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:50:15,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:50:15,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:50:15,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:50:15,195 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:50:15,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:50:15,195 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:50:15,196 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:50:15,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:50:15,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:50:15,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:50:15,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:50:15,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:50:15,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:50:15,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:50:15,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:50:15,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:50:15,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:50:15,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:50:15,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:50:15,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:50:15,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:50:15,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:50:15,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 [2024-10-11 16:50:15,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:50:15,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:50:15,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:50:15,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:50:15,428 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:50:15,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-10-11 16:50:16,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:50:16,808 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:50:16,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-10-11 16:50:16,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a96686920/26116926e0fc45d4b5834680cc9744a3/FLAG05c55f311 [2024-10-11 16:50:16,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a96686920/26116926e0fc45d4b5834680cc9744a3 [2024-10-11 16:50:16,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:50:16,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:50:16,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:50:16,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:50:16,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:50:16,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:50:16" (1/1) ... [2024-10-11 16:50:16,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51adb901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:16, skipping insertion in model container [2024-10-11 16:50:16,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:50:16" (1/1) ... [2024-10-11 16:50:16,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:50:17,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:50:17,145 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:50:17,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:50:17,222 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:50:17,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17 WrapperNode [2024-10-11 16:50:17,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:50:17,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:50:17,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:50:17,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:50:17,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,260 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2024-10-11 16:50:17,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:50:17,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:50:17,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:50:17,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:50:17,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:50:17,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:50:17,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:50:17,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:50:17,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (1/1) ... [2024-10-11 16:50:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:50:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:50:17,316 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 16:50:17,321 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 16:50:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-11 16:50:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:50:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 16:50:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:50:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:50:17,357 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 16:50:17,454 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:50:17,456 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:50:17,623 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:50:17,623 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:50:17,659 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:50:17,661 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 16:50:17,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:50:17 BoogieIcfgContainer [2024-10-11 16:50:17,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:50:17,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:50:17,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:50:17,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:50:17,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:50:16" (1/3) ... [2024-10-11 16:50:17,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f7216f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:50:17, skipping insertion in model container [2024-10-11 16:50:17,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:50:17" (2/3) ... [2024-10-11 16:50:17,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f7216f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:50:17, skipping insertion in model container [2024-10-11 16:50:17,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:50:17" (3/3) ... [2024-10-11 16:50:17,667 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2024-10-11 16:50:17,680 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:50:17,680 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-10-11 16:50:17,681 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:50:17,744 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:50:17,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 250 flow [2024-10-11 16:50:17,817 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2024-10-11 16:50:17,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:50:17,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 129 events. 7/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 157 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2024-10-11 16:50:17,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 250 flow [2024-10-11 16:50:17,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 120 transitions, 247 flow [2024-10-11 16:50:17,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:50:17,840 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;@8d21592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:50:17,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-11 16:50:17,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:50:17,849 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-10-11 16:50:17,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:50:17,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:50:17,850 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] [2024-10-11 16:50:17,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-11 16:50:17,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:50:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1302984874, now seen corresponding path program 1 times [2024-10-11 16:50:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:50:17,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996569609] [2024-10-11 16:50:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:50:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:50:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:50:18,054 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 16:50:18,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:50:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996569609] [2024-10-11 16:50:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996569609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:50:18,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:50:18,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:50:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866792091] [2024-10-11 16:50:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:50:18,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:50:18,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:50:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:50:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:50:18,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 121 [2024-10-11 16:50:18,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 16:50:18,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:50:18,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 121 [2024-10-11 16:50:18,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:50:18,304 INFO L124 PetriNetUnfolderBase]: 120/534 cut-off events. [2024-10-11 16:50:18,305 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:50:18,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 534 events. 120/534 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2324 event pairs, 28 based on Foata normal form. 225/711 useless extension candidates. Maximal degree in co-relation 777. Up to 176 conditions per place. [2024-10-11 16:50:18,310 INFO L140 encePairwiseOnDemand]: 100/121 looper letters, 26 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2024-10-11 16:50:18,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 116 transitions, 314 flow [2024-10-11 16:50:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:50:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:50:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-10-11 16:50:18,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8650137741046832 [2024-10-11 16:50:18,323 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 247 flow. Second operand 3 states and 314 transitions. [2024-10-11 16:50:18,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 116 transitions, 314 flow [2024-10-11 16:50:18,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 116 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:50:18,331 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 278 flow [2024-10-11 16:50:18,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2024-10-11 16:50:18,336 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -10 predicate places. [2024-10-11 16:50:18,336 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 278 flow [2024-10-11 16:50:18,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 16:50:18,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:50:18,336 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:50:18,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:50:18,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-11 16:50:18,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:50:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash -370913420, now seen corresponding path program 1 times [2024-10-11 16:50:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:50:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503687700] [2024-10-11 16:50:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:50:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:50:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:50:18,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:50:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:50:18,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:50:18,405 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:50:18,407 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-10-11 16:50:18,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-10-11 16:50:18,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-10-11 16:50:18,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-10-11 16:50:18,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2024-10-11 16:50:18,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-10-11 16:50:18,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-10-11 16:50:18,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-10-11 16:50:18,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-10-11 16:50:18,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-10-11 16:50:18,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-10-11 16:50:18,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-10-11 16:50:18,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-10-11 16:50:18,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-10-11 16:50:18,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:50:18,414 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:50:18,417 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:50:18,417 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:50:18,458 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:50:18,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 207 transitions, 434 flow [2024-10-11 16:50:18,482 INFO L124 PetriNetUnfolderBase]: 9/204 cut-off events. [2024-10-11 16:50:18,482 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:50:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 204 events. 9/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2024-10-11 16:50:18,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 207 transitions, 434 flow [2024-10-11 16:50:18,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 184 transitions, 381 flow [2024-10-11 16:50:18,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:50:18,489 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;@8d21592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:50:18,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 16:50:18,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:50:18,494 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-10-11 16:50:18,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:50:18,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:50:18,494 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] [2024-10-11 16:50:18,494 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 16:50:18,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:50:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1350520838, now seen corresponding path program 1 times [2024-10-11 16:50:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:50:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903955196] [2024-10-11 16:50:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:50:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:50:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:50:18,550 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 16:50:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:50:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903955196] [2024-10-11 16:50:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903955196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:50:18,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:50:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:50:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278054320] [2024-10-11 16:50:18,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:50:18,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:50:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:50:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:50:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:50:18,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 207 [2024-10-11 16:50:18,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 184 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 16:50:18,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:50:18,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 207 [2024-10-11 16:50:18,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:50:20,439 INFO L124 PetriNetUnfolderBase]: 6162/16651 cut-off events. [2024-10-11 16:50:20,439 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-10-11 16:50:20,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26877 conditions, 16651 events. 6162/16651 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 164341 event pairs, 1936 based on Foata normal form. 6183/21041 useless extension candidates. Maximal degree in co-relation 26848. Up to 6244 conditions per place. [2024-10-11 16:50:20,544 INFO L140 encePairwiseOnDemand]: 166/207 looper letters, 60 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2024-10-11 16:50:20,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 209 transitions, 611 flow [2024-10-11 16:50:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:50:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:50:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2024-10-11 16:50:20,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8534621578099839 [2024-10-11 16:50:20,547 INFO L175 Difference]: Start difference. First operand has 185 places, 184 transitions, 381 flow. Second operand 3 states and 530 transitions. [2024-10-11 16:50:20,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 209 transitions, 611 flow [2024-10-11 16:50:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 209 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:50:20,551 INFO L231 Difference]: Finished difference. Result has 179 places, 197 transitions, 580 flow [2024-10-11 16:50:20,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=179, PETRI_TRANSITIONS=197} [2024-10-11 16:50:20,552 INFO L277 CegarLoopForPetriNet]: 185 programPoint places, -6 predicate places. [2024-10-11 16:50:20,552 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 197 transitions, 580 flow [2024-10-11 16:50:20,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 16:50:20,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:50:20,553 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:50:20,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:50:20,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 16:50:20,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:50:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 198173084, now seen corresponding path program 1 times [2024-10-11 16:50:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:50:20,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278212238] [2024-10-11 16:50:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:50:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:50:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:50:20,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:50:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:50:20,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:50:20,592 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:50:20,592 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-11 16:50:20,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-11 16:50:20,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-11 16:50:20,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-11 16:50:20,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-11 16:50:20,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-11 16:50:20,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:50:20,597 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:50:20,597 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:50:20,597 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:50:20,629 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:50:20,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 293 transitions, 622 flow [2024-10-11 16:50:20,655 INFO L124 PetriNetUnfolderBase]: 11/279 cut-off events. [2024-10-11 16:50:20,655 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:50:20,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 279 events. 11/279 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 684 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 290. Up to 8 conditions per place. [2024-10-11 16:50:20,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 293 transitions, 622 flow [2024-10-11 16:50:20,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 248 transitions, 517 flow [2024-10-11 16:50:20,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:50:20,664 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;@8d21592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:50:20,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-11 16:50:20,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:50:20,668 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-10-11 16:50:20,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:50:20,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:50:20,668 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] [2024-10-11 16:50:20,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-11 16:50:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:50:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -648055532, now seen corresponding path program 1 times [2024-10-11 16:50:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:50:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226914728] [2024-10-11 16:50:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:50:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:50:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:50:20,714 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 16:50:20,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:50:20,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226914728] [2024-10-11 16:50:20,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226914728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:50:20,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:50:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:50:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965432815] [2024-10-11 16:50:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:50:20,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:50:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:50:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:50:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:50:20,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 293 [2024-10-11 16:50:20,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 248 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 16:50:20,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:50:20,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 293 [2024-10-11 16:50:20,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand