./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 9c046e6043edd4a9981865f273deb13bc96b2518d014dd6435bf0abb656de540 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:32:23,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:32:23,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:32:23,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:32:23,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:32:23,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:32:23,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:32:23,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:32:23,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:32:23,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:32:23,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:32:23,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:32:23,915 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:32:23,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:32:23,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:32:23,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:32:23,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 9c046e6043edd4a9981865f273deb13bc96b2518d014dd6435bf0abb656de540 [2025-01-09 21:32:24,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:32:24,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:32:24,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:32:24,149 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:32:24,149 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:32:24,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2025-01-09 21:32:25,279 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cafb6a741/87ce2478112b4dffa223d6f3b7cd6054/FLAG4981d036e [2025-01-09 21:32:25,585 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:32:25,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2025-01-09 21:32:25,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cafb6a741/87ce2478112b4dffa223d6f3b7cd6054/FLAG4981d036e [2025-01-09 21:32:25,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cafb6a741/87ce2478112b4dffa223d6f3b7cd6054 [2025-01-09 21:32:25,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:32:25,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:32:25,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:32:25,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:32:25,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:32:25,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:32:25" (1/1) ... [2025-01-09 21:32:25,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77041b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:25, skipping insertion in model container [2025-01-09 21:32:25,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:32:25" (1/1) ... [2025-01-09 21:32:25,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:32:26,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:32:26,023 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:32:26,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:32:26,046 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:32:26,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26 WrapperNode [2025-01-09 21:32:26,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:32:26,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:32:26,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:32:26,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:32:26,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,072 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 130 [2025-01-09 21:32:26,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:32:26,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:32:26,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:32:26,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:32:26,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,083 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:32:26,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:32:26,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:32:26,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:32:26,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (1/1) ... [2025-01-09 21:32:26,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:32:26,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:32:26,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:32:26,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:32:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:32:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 21:32:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 21:32:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 21:32:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 21:32:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:32:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:32:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:32:26,133 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:32:26,204 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:32:26,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:32:26,371 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:32:26,372 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:32:26,388 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:32:26,388 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 21:32:26,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:32:26 BoogieIcfgContainer [2025-01-09 21:32:26,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:32:26,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:32:26,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:32:26,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:32:26,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:32:25" (1/3) ... [2025-01-09 21:32:26,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:32:26, skipping insertion in model container [2025-01-09 21:32:26,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:32:26" (2/3) ... [2025-01-09 21:32:26,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:32:26, skipping insertion in model container [2025-01-09 21:32:26,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:32:26" (3/3) ... [2025-01-09 21:32:26,396 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2025-01-09 21:32:26,407 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:32:26,409 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-2.wvr.c that has 3 procedures, 139 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-01-09 21:32:26,410 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:32:26,472 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 21:32:26,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 143 transitions, 300 flow [2025-01-09 21:32:26,541 INFO L124 PetriNetUnfolderBase]: 5/141 cut-off events. [2025-01-09 21:32:26,542 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 21:32:26,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 5/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 86 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2025-01-09 21:32:26,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 143 transitions, 300 flow [2025-01-09 21:32:26,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 124 transitions, 257 flow [2025-01-09 21:32:26,562 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:32:26,573 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;@78917c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:32:26,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-01-09 21:32:26,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:32:26,580 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2025-01-09 21:32:26,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:32:26,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:26,581 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] [2025-01-09 21:32:26,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:26,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1483852142, now seen corresponding path program 1 times [2025-01-09 21:32:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:26,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076395200] [2025-01-09 21:32:26,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:26,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:26,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 21:32:26,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 21:32:26,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:26,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076395200] [2025-01-09 21:32:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076395200] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:26,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019915956] [2025-01-09 21:32:26,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:26,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:26,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:26,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:26,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 143 [2025-01-09 21:32:26,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-01-09 21:32:26,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:26,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 143 [2025-01-09 21:32:26,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:26,819 INFO L124 PetriNetUnfolderBase]: 15/208 cut-off events. [2025-01-09 21:32:26,819 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-01-09 21:32:26,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 208 events. 15/208 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 506 event pairs, 14 based on Foata normal form. 8/193 useless extension candidates. Maximal degree in co-relation 184. Up to 41 conditions per place. [2025-01-09 21:32:26,822 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 12 selfloop transitions, 2 changer transitions 1/120 dead transitions. [2025-01-09 21:32:26,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 120 transitions, 277 flow [2025-01-09 21:32:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2025-01-09 21:32:26,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8881118881118881 [2025-01-09 21:32:26,835 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 257 flow. Second operand 3 states and 381 transitions. [2025-01-09 21:32:26,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 120 transitions, 277 flow [2025-01-09 21:32:26,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 120 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-09 21:32:26,843 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 246 flow [2025-01-09 21:32:26,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2025-01-09 21:32:26,847 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2025-01-09 21:32:26,848 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 246 flow [2025-01-09 21:32:26,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-01-09 21:32:26,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:26,848 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, 1, 1, 1] [2025-01-09 21:32:26,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:32:26,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:26,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1644497401, now seen corresponding path program 1 times [2025-01-09 21:32:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164700910] [2025-01-09 21:32:26,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:26,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 21:32:26,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 21:32:26,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:26,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164700910] [2025-01-09 21:32:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164700910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:26,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:26,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449329808] [2025-01-09 21:32:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:26,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:26,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:26,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:26,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 143 [2025-01-09 21:32:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-01-09 21:32:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 143 [2025-01-09 21:32:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:26,994 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2025-01-09 21:32:26,994 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-01-09 21:32:26,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 256 events. 15/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 769 event pairs, 14 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 280. Up to 41 conditions per place. [2025-01-09 21:32:26,997 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 12 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2025-01-09 21:32:26,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 272 flow [2025-01-09 21:32:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2025-01-09 21:32:26,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8811188811188811 [2025-01-09 21:32:26,999 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 246 flow. Second operand 3 states and 378 transitions. [2025-01-09 21:32:26,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 272 flow [2025-01-09 21:32:27,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 118 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:32:27,003 INFO L231 Difference]: Finished difference. Result has 123 places, 118 transitions, 244 flow [2025-01-09 21:32:27,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2025-01-09 21:32:27,004 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -4 predicate places. [2025-01-09 21:32:27,004 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 244 flow [2025-01-09 21:32:27,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2025-01-09 21:32:27,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:27,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:32:27,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:32:27,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1207941065, now seen corresponding path program 1 times [2025-01-09 21:32:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362412729] [2025-01-09 21:32:27,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:27,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:27,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-01-09 21:32:27,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-01-09 21:32:27,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:27,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:27,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:27,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362412729] [2025-01-09 21:32:27,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362412729] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:27,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664916325] [2025-01-09 21:32:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:27,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:27,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:27,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:27,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:27,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 143 [2025-01-09 21:32:27,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2025-01-09 21:32:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 143 [2025-01-09 21:32:27,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:27,132 INFO L124 PetriNetUnfolderBase]: 24/211 cut-off events. [2025-01-09 21:32:27,132 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 21:32:27,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 211 events. 24/211 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 585 event pairs, 17 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 254. Up to 46 conditions per place. [2025-01-09 21:32:27,134 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 14 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2025-01-09 21:32:27,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 282 flow [2025-01-09 21:32:27,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2025-01-09 21:32:27,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8997668997668997 [2025-01-09 21:32:27,136 INFO L175 Difference]: Start difference. First operand has 123 places, 118 transitions, 244 flow. Second operand 3 states and 386 transitions. [2025-01-09 21:32:27,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 282 flow [2025-01-09 21:32:27,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:32:27,137 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 242 flow [2025-01-09 21:32:27,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2025-01-09 21:32:27,138 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2025-01-09 21:32:27,138 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 242 flow [2025-01-09 21:32:27,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2025-01-09 21:32:27,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:27,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:32:27,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:32:27,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:27,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1303920582, now seen corresponding path program 1 times [2025-01-09 21:32:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665624777] [2025-01-09 21:32:27,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:27,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 21:32:27,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 21:32:27,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:27,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:27,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665624777] [2025-01-09 21:32:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665624777] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:27,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542115811] [2025-01-09 21:32:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:27,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:27,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:27,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:27,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 143 [2025-01-09 21:32:27,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 21:32:27,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:27,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 143 [2025-01-09 21:32:27,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:27,259 INFO L124 PetriNetUnfolderBase]: 18/201 cut-off events. [2025-01-09 21:32:27,259 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 21:32:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 201 events. 18/201 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 504 event pairs, 6 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 148. Up to 26 conditions per place. [2025-01-09 21:32:27,260 INFO L140 encePairwiseOnDemand]: 141/143 looper letters, 11 selfloop transitions, 1 changer transitions 16/119 dead transitions. [2025-01-09 21:32:27,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 276 flow [2025-01-09 21:32:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2025-01-09 21:32:27,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2025-01-09 21:32:27,262 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 242 flow. Second operand 3 states and 390 transitions. [2025-01-09 21:32:27,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 276 flow [2025-01-09 21:32:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:32:27,264 INFO L231 Difference]: Finished difference. Result has 121 places, 101 transitions, 208 flow [2025-01-09 21:32:27,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=121, PETRI_TRANSITIONS=101} [2025-01-09 21:32:27,264 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -6 predicate places. [2025-01-09 21:32:27,264 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 101 transitions, 208 flow [2025-01-09 21:32:27,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 21:32:27,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:27,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:32:27,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:32:27,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:27,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -542655182, now seen corresponding path program 1 times [2025-01-09 21:32:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:27,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836547061] [2025-01-09 21:32:27,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:27,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 21:32:27,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 21:32:27,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:27,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:27,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836547061] [2025-01-09 21:32:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836547061] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:27,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:27,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766875958] [2025-01-09 21:32:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:27,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:27,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:27,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:27,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:27,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 143 [2025-01-09 21:32:27,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 101 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2025-01-09 21:32:27,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:27,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 143 [2025-01-09 21:32:27,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:27,368 INFO L124 PetriNetUnfolderBase]: 20/206 cut-off events. [2025-01-09 21:32:27,368 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 21:32:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 206 events. 20/206 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 495 event pairs, 14 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 166. Up to 39 conditions per place. [2025-01-09 21:32:27,369 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 13 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2025-01-09 21:32:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 243 flow [2025-01-09 21:32:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2025-01-09 21:32:27,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8974358974358975 [2025-01-09 21:32:27,370 INFO L175 Difference]: Start difference. First operand has 121 places, 101 transitions, 208 flow. Second operand 3 states and 385 transitions. [2025-01-09 21:32:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 243 flow [2025-01-09 21:32:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 21:32:27,371 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 209 flow [2025-01-09 21:32:27,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2025-01-09 21:32:27,372 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -20 predicate places. [2025-01-09 21:32:27,372 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 209 flow [2025-01-09 21:32:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2025-01-09 21:32:27,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:32:27,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:32:27,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 21:32:27,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-01-09 21:32:27,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:32:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash 519206453, now seen corresponding path program 1 times [2025-01-09 21:32:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:32:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734054307] [2025-01-09 21:32:27,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:32:27,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:32:27,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-09 21:32:27,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 21:32:27,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:32:27,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:32:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:32:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:32:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734054307] [2025-01-09 21:32:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734054307] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:32:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:32:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:32:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750315447] [2025-01-09 21:32:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:32:27,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:32:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:32:27,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:32:27,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:32:27,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 143 [2025-01-09 21:32:27,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2025-01-09 21:32:27,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:32:27,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 143 [2025-01-09 21:32:27,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:32:27,469 INFO L124 PetriNetUnfolderBase]: 11/181 cut-off events. [2025-01-09 21:32:27,469 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-09 21:32:27,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 181 events. 11/181 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 374 event pairs, 8 based on Foata normal form. 4/178 useless extension candidates. Maximal degree in co-relation 171. Up to 25 conditions per place. [2025-01-09 21:32:27,470 INFO L140 encePairwiseOnDemand]: 141/143 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2025-01-09 21:32:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 238 flow [2025-01-09 21:32:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:32:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:32:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2025-01-09 21:32:27,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9044289044289044 [2025-01-09 21:32:27,471 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 209 flow. Second operand 3 states and 388 transitions. [2025-01-09 21:32:27,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 238 flow [2025-01-09 21:32:27,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:32:27,472 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2025-01-09 21:32:27,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2025-01-09 21:32:27,472 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, -21 predicate places. [2025-01-09 21:32:27,472 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2025-01-09 21:32:27,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2025-01-09 21:32:27,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2025-01-09 21:32:27,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 21:32:27,476 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-01-09 21:32:27,479 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 21:32:27,479 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 21:32:27,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 09:32:27 BasicIcfg [2025-01-09 21:32:27,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 21:32:27,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 21:32:27,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 21:32:27,483 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 21:32:27,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:32:26" (3/4) ... [2025-01-09 21:32:27,484 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 21:32:27,486 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-01-09 21:32:27,486 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-01-09 21:32:27,489 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 21:32:27,489 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-01-09 21:32:27,489 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 21:32:27,489 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 21:32:27,547 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 21:32:27,547 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 21:32:27,547 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 21:32:27,548 INFO L158 Benchmark]: Toolchain (without parser) took 1673.20ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 93.0MB in the end (delta: 18.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2025-01-09 21:32:27,548 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:32:27,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.76ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 100.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:32:27,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.45ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:32:27,550 INFO L158 Benchmark]: Boogie Preprocessor took 14.81ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 98.1MB in the end (delta: 669.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:32:27,552 INFO L158 Benchmark]: RCFGBuilder took 300.83ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 82.2MB in the end (delta: 15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:32:27,552 INFO L158 Benchmark]: TraceAbstraction took 1091.55ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 99.5MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:32:27,553 INFO L158 Benchmark]: Witness Printer took 64.18ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 93.0MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:32:27,554 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.76ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 100.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.45ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.81ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 98.1MB in the end (delta: 669.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 300.83ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 82.2MB in the end (delta: 15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1091.55ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 99.5MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.18ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 93.0MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 65]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 66]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 193 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 191 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 17 mSDtfsCounter, 191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 21:32:27,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE