./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:11:49,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:11:49,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-12 12:11:49,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:11:49,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:11:49,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:11:49,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:11:49,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:11:49,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:11:49,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:11:49,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:11:49,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:11:49,480 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:11:49,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:11:49,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:11:49,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:11:49,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:11:49,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:11:49,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:11:49,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:11:49,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:11:49,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:11:49,488 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-12 12:11:49,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:11:49,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 12:11:49,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:11:49,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:11:49,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:11:49,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:11:49,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:11:49,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:11:49,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:11:49,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:11:49,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:11:49,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:11:49,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:11:49,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:11:49,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:11:49,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:11:49,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:11:49,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:11:49,497 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-12 12:11:49,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:11:49,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:11:49,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:11:49,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:11:49,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:11:49,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-12 12:11:51,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:11:51,525 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:11:51,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-12 12:11:51,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c219046/e4e6173b45d34b4584624144ecf5febf/FLAG1bdd05c98 [2024-11-12 12:11:51,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c219046/e4e6173b45d34b4584624144ecf5febf [2024-11-12 12:11:51,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:11:51,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:11:51,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:11:51,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:11:51,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:11:51,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:51" (1/1) ... [2024-11-12 12:11:51,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544c43f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:51, skipping insertion in model container [2024-11-12 12:11:51,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:51" (1/1) ... [2024-11-12 12:11:51,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:11:52,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:11:52,049 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:11:52,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:11:52,140 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:11:52,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52 WrapperNode [2024-11-12 12:11:52,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:11:52,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:11:52,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:11:52,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:11:52,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,190 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2024-11-12 12:11:52,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:11:52,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:11:52,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:11:52,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:11:52,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:11:52,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:11:52,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:11:52,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:11:52,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (1/1) ... [2024-11-12 12:11:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:11:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:11:52,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 12:11:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 12:11:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-12 12:11:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-12 12:11:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 12:11:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 12:11:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 12:11:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:11:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-12 12:11:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 12:11:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:11:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:11:52,347 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 12:11:52,474 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:11:52,476 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:11:52,688 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 12:11:52,688 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:11:52,736 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:11:52,738 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 12:11:52,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:52 BoogieIcfgContainer [2024-11-12 12:11:52,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:11:52,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:11:52,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:11:52,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:11:52,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:51" (1/3) ... [2024-11-12 12:11:52,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad14ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:52, skipping insertion in model container [2024-11-12 12:11:52,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:52" (2/3) ... [2024-11-12 12:11:52,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dad14ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:52, skipping insertion in model container [2024-11-12 12:11:52,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:52" (3/3) ... [2024-11-12 12:11:52,781 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-12 12:11:52,798 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:11:52,798 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-12 12:11:52,798 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 12:11:52,911 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:11:52,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 250 flow [2024-11-12 12:11:53,010 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2024-11-12 12:11:53,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:11:53,017 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. [2024-11-12 12:11:53,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 250 flow [2024-11-12 12:11:53,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 120 transitions, 247 flow [2024-11-12 12:11:53,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:11:53,040 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;@74c7bd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:11:53,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-12 12:11:53,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:11:53,051 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-11-12 12:11:53,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:11:53,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:11:53,052 INFO L206 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] [2024-11-12 12:11:53,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-11-12 12:11:53,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:11:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1302984874, now seen corresponding path program 1 times [2024-11-12 12:11:53,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:11:53,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470162274] [2024-11-12 12:11:53,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:11:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:11:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:11:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:11:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:11:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470162274] [2024-11-12 12:11:53,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470162274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:11:53,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:11:53,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:11:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572784922] [2024-11-12 12:11:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:11:53,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:11:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:11:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:11:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:11:53,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 121 [2024-11-12 12:11:53,444 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) [2024-11-12 12:11:53,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:11:53,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 121 [2024-11-12 12:11:53,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:11:53,685 INFO L124 PetriNetUnfolderBase]: 120/534 cut-off events. [2024-11-12 12:11:53,686 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 12:11:53,692 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. [2024-11-12 12:11:53,698 INFO L140 encePairwiseOnDemand]: 100/121 looper letters, 26 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2024-11-12 12:11:53,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 116 transitions, 314 flow [2024-11-12 12:11:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:11:53,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:11:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-11-12 12:11:53,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8650137741046832 [2024-11-12 12:11:53,717 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 247 flow. Second operand 3 states and 314 transitions. [2024-11-12 12:11:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 116 transitions, 314 flow [2024-11-12 12:11:53,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 116 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 12:11:53,728 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 278 flow [2024-11-12 12:11:53,731 INFO L262 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} [2024-11-12 12:11:53,737 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, -10 predicate places. [2024-11-12 12:11:53,738 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 278 flow [2024-11-12 12:11:53,738 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) [2024-11-12 12:11:53,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:11:53,739 INFO L206 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] [2024-11-12 12:11:53,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:11:53,739 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)] === [2024-11-12 12:11:53,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:11:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -370913420, now seen corresponding path program 1 times [2024-11-12 12:11:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:11:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408469043] [2024-11-12 12:11:53,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:11:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:11:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:11:53,787 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:11:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:11:53,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:11:53,846 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:11:53,848 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-12 12:11:53,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-12 12:11:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-12 12:11:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-12 12:11:53,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-12 12:11:53,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-12 12:11:53,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-12 12:11:53,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-11-12 12:11:53,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-12 12:11:53,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-12 12:11:53,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2024-11-12 12:11:53,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-12 12:11:53,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-12 12:11:53,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-12 12:11:53,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-12 12:11:53,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-12 12:11:53,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-12 12:11:53,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-12 12:11:53,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-12 12:11:53,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-12 12:11:53,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:11:53,857 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 12:11:53,862 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:11:53,862 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 12:11:53,926 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:11:53,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 207 transitions, 434 flow [2024-11-12 12:11:53,966 INFO L124 PetriNetUnfolderBase]: 9/204 cut-off events. [2024-11-12 12:11:53,967 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 12:11:53,971 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. [2024-11-12 12:11:53,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 207 transitions, 434 flow [2024-11-12 12:11:53,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 184 transitions, 381 flow [2024-11-12 12:11:53,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:11:53,978 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;@74c7bd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:11:53,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-12 12:11:53,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:11:53,984 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-11-12 12:11:53,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:11:53,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:11:53,985 INFO L206 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] [2024-11-12 12:11:53,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-12 12:11:53,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:11:53,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1350520838, now seen corresponding path program 1 times [2024-11-12 12:11:53,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:11:53,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443212271] [2024-11-12 12:11:53,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:11:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:11:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:11:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:11:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:11:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443212271] [2024-11-12 12:11:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443212271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:11:54,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:11:54,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:11:54,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117624928] [2024-11-12 12:11:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:11:54,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:11:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:11:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:11:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:11:54,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 207 [2024-11-12 12:11:54,161 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) [2024-11-12 12:11:54,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:11:54,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 207 [2024-11-12 12:11:54,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:11:56,697 INFO L124 PetriNetUnfolderBase]: 6162/16651 cut-off events. [2024-11-12 12:11:56,697 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-11-12 12:11:56,747 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. [2024-11-12 12:11:56,855 INFO L140 encePairwiseOnDemand]: 166/207 looper letters, 60 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2024-11-12 12:11:56,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 209 transitions, 611 flow [2024-11-12 12:11:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:11:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:11:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2024-11-12 12:11:56,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8534621578099839 [2024-11-12 12:11:56,865 INFO L175 Difference]: Start difference. First operand has 185 places, 184 transitions, 381 flow. Second operand 3 states and 530 transitions. [2024-11-12 12:11:56,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 209 transitions, 611 flow [2024-11-12 12:11:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 209 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 12:11:56,871 INFO L231 Difference]: Finished difference. Result has 179 places, 197 transitions, 580 flow [2024-11-12 12:11:56,872 INFO L262 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} [2024-11-12 12:11:56,872 INFO L279 CegarLoopForPetriNet]: 185 programPoint places, -6 predicate places. [2024-11-12 12:11:56,873 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 197 transitions, 580 flow [2024-11-12 12:11:56,873 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) [2024-11-12 12:11:56,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:11:56,874 INFO L206 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] [2024-11-12 12:11:56,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:11:56,874 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)] === [2024-11-12 12:11:56,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:11:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 198173084, now seen corresponding path program 1 times [2024-11-12 12:11:56,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:11:56,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666131091] [2024-11-12 12:11:56,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:11:56,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:11:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:11:56,897 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:11:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:11:56,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:11:56,921 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:11:56,921 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-12 12:11:56,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-11-12 12:11:56,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-11-12 12:11:56,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-11-12 12:11:56,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-11-12 12:11:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-11-12 12:11:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-11-12 12:11:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-11-12 12:11:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-11-12 12:11:56,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-11-12 12:11:56,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-11-12 12:11:56,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-11-12 12:11:56,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-11-12 12:11:56,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-11-12 12:11:56,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-11-12 12:11:56,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-11-12 12:11:56,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-11-12 12:11:56,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-11-12 12:11:56,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-11-12 12:11:56,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:11:56,927 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 12:11:56,927 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:11:56,927 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 12:11:56,978 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:11:56,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 293 transitions, 622 flow [2024-11-12 12:11:57,099 INFO L124 PetriNetUnfolderBase]: 11/279 cut-off events. [2024-11-12 12:11:57,099 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 12:11:57,102 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. [2024-11-12 12:11:57,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 293 transitions, 622 flow [2024-11-12 12:11:57,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 248 transitions, 517 flow [2024-11-12 12:11:57,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:11:57,107 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;@74c7bd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:11:57,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-12 12:11:57,110 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:11:57,110 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-11-12 12:11:57,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:11:57,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:11:57,110 INFO L206 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] [2024-11-12 12:11:57,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-12 12:11:57,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:11:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -648055532, now seen corresponding path program 1 times [2024-11-12 12:11:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:11:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222836289] [2024-11-12 12:11:57,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:11:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:11:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:11:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:11:57,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:11:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222836289] [2024-11-12 12:11:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222836289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:11:57,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:11:57,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:11:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567585679] [2024-11-12 12:11:57,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:11:57,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:11:57,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:11:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:11:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:11:57,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 293 [2024-11-12 12:11:57,288 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) [2024-11-12 12:11:57,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:11:57,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 293 [2024-11-12 12:11:57,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand