./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-atomic/gcd-2.i --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/pthread-atomic/gcd-2.i -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 abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:03:38,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:03:38,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:03:38,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:03:38,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:03:38,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:03:38,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:03:38,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:03:38,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:03:38,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:03:38,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:03:38,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:03:38,708 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:03:38,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:03:38,709 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:03:38,710 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:03:38,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:03:38,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:03:38,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:03:38,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:03:38,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:03:38,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:03:38,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:03:38,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:03:38,712 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 -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2025-01-09 21:03:38,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:03:38,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:03:38,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:03:38,949 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:03:38,949 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:03:38,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/gcd-2.i [2025-01-09 21:03:40,038 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0cbf3fd1/979dfa466ca1447ba3d3a009ee9aa62c/FLAG9218ced88 [2025-01-09 21:03:40,308 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:03:40,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i [2025-01-09 21:03:40,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0cbf3fd1/979dfa466ca1447ba3d3a009ee9aa62c/FLAG9218ced88 [2025-01-09 21:03:40,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0cbf3fd1/979dfa466ca1447ba3d3a009ee9aa62c [2025-01-09 21:03:40,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:03:40,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:03:40,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:03:40,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:03:40,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:03:40,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b15a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40, skipping insertion in model container [2025-01-09 21:03:40,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:03:40,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:03:40,562 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:03:40,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:03:40,615 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:03:40,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40 WrapperNode [2025-01-09 21:03:40,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:03:40,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:03:40,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:03:40,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:03:40,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,648 INFO L138 Inliner]: procedures = 173, calls = 29, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 164 [2025-01-09 21:03:40,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:03:40,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:03:40,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:03:40,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:03:40,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:03:40,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:03:40,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:03:40,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:03:40,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (1/1) ... [2025-01-09 21:03:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:03:40,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:03:40,688 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 21:03:40,690 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 21:03:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:03:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2025-01-09 21:03:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2025-01-09 21:03:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2025-01-09 21:03:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2025-01-09 21:03:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:03:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:03:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:03:40,707 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 21:03:40,784 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:03:40,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:03:40,997 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:03:40,997 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:03:41,074 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:03:41,075 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 21:03:41,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:03:41 BoogieIcfgContainer [2025-01-09 21:03:41,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:03:41,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:03:41,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:03:41,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:03:41,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:03:40" (1/3) ... [2025-01-09 21:03:41,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c72d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:03:41, skipping insertion in model container [2025-01-09 21:03:41,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:03:40" (2/3) ... [2025-01-09 21:03:41,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c72d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:03:41, skipping insertion in model container [2025-01-09 21:03:41,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:03:41" (3/3) ... [2025-01-09 21:03:41,082 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2025-01-09 21:03:41,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:03:41,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd-2.i that has 3 procedures, 182 locations, 1 initial locations, 2 loop locations, and 17 error locations. [2025-01-09 21:03:41,094 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:03:41,144 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 21:03:41,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 196 transitions, 406 flow [2025-01-09 21:03:41,234 INFO L124 PetriNetUnfolderBase]: 15/194 cut-off events. [2025-01-09 21:03:41,237 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 21:03:41,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 15/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2025-01-09 21:03:41,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 196 transitions, 406 flow [2025-01-09 21:03:41,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 111 transitions, 234 flow [2025-01-09 21:03:41,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:03:41,270 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;@1171b349, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:03:41,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-01-09 21:03:41,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:03:41,283 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2025-01-09 21:03:41,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:03:41,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:03:41,284 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] [2025-01-09 21:03:41,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:03:41,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:03:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1971994626, now seen corresponding path program 1 times [2025-01-09 21:03:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:03:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065314700] [2025-01-09 21:03:41,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:03:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:03:41,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 21:03:41,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 21:03:41,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:41,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:03:41,473 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 21:03:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:03:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065314700] [2025-01-09 21:03:41,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065314700] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:03:41,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:03:41,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:03:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348466836] [2025-01-09 21:03:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:03:41,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:03:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:03:41,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:03:41,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:03:41,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2025-01-09 21:03:41,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 21:03:41,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:03:41,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2025-01-09 21:03:41,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:03:41,558 INFO L124 PetriNetUnfolderBase]: 14/134 cut-off events. [2025-01-09 21:03:41,559 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-01-09 21:03:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 134 events. 14/134 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 191 event pairs, 6 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 89. Up to 33 conditions per place. [2025-01-09 21:03:41,560 INFO L140 encePairwiseOnDemand]: 179/196 looper letters, 12 selfloop transitions, 2 changer transitions 2/96 dead transitions. [2025-01-09 21:03:41,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 232 flow [2025-01-09 21:03:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:03:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:03:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2025-01-09 21:03:41,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8350340136054422 [2025-01-09 21:03:41,575 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 234 flow. Second operand 3 states and 491 transitions. [2025-01-09 21:03:41,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 232 flow [2025-01-09 21:03:41,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-09 21:03:41,584 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 196 flow [2025-01-09 21:03:41,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2025-01-09 21:03:41,590 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, -13 predicate places. [2025-01-09 21:03:41,591 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 196 flow [2025-01-09 21:03:41,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 21:03:41,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:03:41,591 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] [2025-01-09 21:03:41,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:03:41,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:03:41,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:03:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1936867709, now seen corresponding path program 1 times [2025-01-09 21:03:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:03:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648730800] [2025-01-09 21:03:41,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:03:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:03:41,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 21:03:41,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 21:03:41,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:41,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:03:41,658 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 21:03:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:03:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648730800] [2025-01-09 21:03:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648730800] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:03:41,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:03:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:03:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090825484] [2025-01-09 21:03:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:03:41,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:03:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:03:41,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:03:41,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:03:41,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 196 [2025-01-09 21:03:41,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 21:03:41,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:03:41,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 196 [2025-01-09 21:03:41,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:03:41,727 INFO L124 PetriNetUnfolderBase]: 14/140 cut-off events. [2025-01-09 21:03:41,728 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-09 21:03:41,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 140 events. 14/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 210 event pairs, 6 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 129. Up to 32 conditions per place. [2025-01-09 21:03:41,729 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 11 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2025-01-09 21:03:41,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 220 flow [2025-01-09 21:03:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:03:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:03:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2025-01-09 21:03:41,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.814625850340136 [2025-01-09 21:03:41,730 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 196 flow. Second operand 3 states and 479 transitions. [2025-01-09 21:03:41,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 220 flow [2025-01-09 21:03:41,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:03:41,736 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 194 flow [2025-01-09 21:03:41,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-01-09 21:03:41,736 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, -16 predicate places. [2025-01-09 21:03:41,736 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 194 flow [2025-01-09 21:03:41,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 21:03:41,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:03:41,737 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] [2025-01-09 21:03:41,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:03:41,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:03:41,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:03:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -718088806, now seen corresponding path program 1 times [2025-01-09 21:03:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:03:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480899562] [2025-01-09 21:03:41,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:03:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:03:41,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-09 21:03:41,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 21:03:41,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:41,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:03:41,811 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 21:03:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:03:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480899562] [2025-01-09 21:03:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480899562] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:03:41,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:03:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:03:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600768658] [2025-01-09 21:03:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:03:41,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:03:41,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:03:41,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:03:41,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:03:41,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2025-01-09 21:03:41,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 21:03:41,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:03:41,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2025-01-09 21:03:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:03:41,859 INFO L124 PetriNetUnfolderBase]: 27/189 cut-off events. [2025-01-09 21:03:41,859 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-09 21:03:41,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 189 events. 27/189 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 474 event pairs, 6 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 200. Up to 49 conditions per place. [2025-01-09 21:03:41,861 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 11 selfloop transitions, 5 changer transitions 2/96 dead transitions. [2025-01-09 21:03:41,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 237 flow [2025-01-09 21:03:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:03:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:03:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2025-01-09 21:03:41,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2025-01-09 21:03:41,865 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 194 flow. Second operand 3 states and 483 transitions. [2025-01-09 21:03:41,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 237 flow [2025-01-09 21:03:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:03:41,867 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 219 flow [2025-01-09 21:03:41,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-01-09 21:03:41,869 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, -16 predicate places. [2025-01-09 21:03:41,869 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 219 flow [2025-01-09 21:03:41,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 21:03:41,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:03:41,869 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] [2025-01-09 21:03:41,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:03:41,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:03:41,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:03:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1406411132, now seen corresponding path program 1 times [2025-01-09 21:03:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:03:41,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714051310] [2025-01-09 21:03:41,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:03:41,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:03:41,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-09 21:03:41,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-09 21:03:41,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:41,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:03:41,909 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 21:03:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:03:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714051310] [2025-01-09 21:03:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714051310] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:03:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:03:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:03:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036525700] [2025-01-09 21:03:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:03:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:03:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:03:41,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:03:41,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:03:41,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 196 [2025-01-09 21:03:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 21:03:41,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:03:41,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 196 [2025-01-09 21:03:41,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:03:41,973 INFO L124 PetriNetUnfolderBase]: 47/236 cut-off events. [2025-01-09 21:03:41,974 INFO L125 PetriNetUnfolderBase]: For 56/60 co-relation queries the response was YES. [2025-01-09 21:03:41,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 236 events. 47/236 cut-off events. For 56/60 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 743 event pairs, 10 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 215. Up to 59 conditions per place. [2025-01-09 21:03:41,975 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 11 selfloop transitions, 6 changer transitions 1/98 dead transitions. [2025-01-09 21:03:41,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 271 flow [2025-01-09 21:03:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:03:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:03:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2025-01-09 21:03:41,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2025-01-09 21:03:41,979 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 219 flow. Second operand 3 states and 490 transitions. [2025-01-09 21:03:41,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 271 flow [2025-01-09 21:03:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:03:41,982 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 251 flow [2025-01-09 21:03:41,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2025-01-09 21:03:41,983 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, -17 predicate places. [2025-01-09 21:03:41,984 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 251 flow [2025-01-09 21:03:41,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 21:03:41,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:03:41,984 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] [2025-01-09 21:03:41,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:03:41,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting dec_bErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:03:41,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:03:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1772582853, now seen corresponding path program 1 times [2025-01-09 21:03:41,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:03:41,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530306577] [2025-01-09 21:03:41,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:03:41,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:03:41,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 21:03:42,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 21:03:42,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:42,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:03:42,033 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:03:42,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 21:03:42,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 21:03:42,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:03:42,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:03:42,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:03:42,084 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:03:42,084 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (32 of 33 remaining) [2025-01-09 21:03:42,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-01-09 21:03:42,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-01-09 21:03:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-01-09 21:03:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-01-09 21:03:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-01-09 21:03:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 33 remaining) [2025-01-09 21:03:42,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-01-09 21:03:42,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-01-09 21:03:42,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 21:03:42,092 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-01-09 21:03:42,137 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 21:03:42,138 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 21:03:42,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 09:03:42 BasicIcfg [2025-01-09 21:03:42,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 21:03:42,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 21:03:42,147 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 21:03:42,147 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 21:03:42,148 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:03:41" (3/4) ... [2025-01-09 21:03:42,148 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-09 21:03:42,200 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 12. [2025-01-09 21:03:42,237 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 21:03:42,237 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 21:03:42,237 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 21:03:42,238 INFO L158 Benchmark]: Toolchain (without parser) took 1904.24ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 111.4MB in the beginning and 326.0MB in the end (delta: -214.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2025-01-09 21:03:42,238 INFO L158 Benchmark]: CDTParser took 1.15ms. Allocated memory is still 201.3MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:03:42,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.22ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 90.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 21:03:42,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.63ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 88.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:03:42,239 INFO L158 Benchmark]: Boogie Preprocessor took 17.14ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:03:42,239 INFO L158 Benchmark]: RCFGBuilder took 409.54ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 60.9MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 21:03:42,239 INFO L158 Benchmark]: TraceAbstraction took 1068.43ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 60.5MB in the beginning and 335.3MB in the end (delta: -274.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:03:42,239 INFO L158 Benchmark]: Witness Printer took 91.52ms. Allocated memory is still 385.9MB. Free memory was 335.3MB in the beginning and 326.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:03:42,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15ms. Allocated memory is still 201.3MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.22ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 90.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.63ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 88.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.14ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 409.54ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 60.9MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1068.43ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 60.5MB in the beginning and 335.3MB in the end (delta: -274.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 91.52ms. Allocated memory is still 385.9MB. Free memory was 335.3MB in the beginning and 326.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 718]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; VAL [a=0, b=0] [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); VAL [a=0, a_in=-4294967297, b=0] [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); VAL [a=0, a_in=-4294967297, b=0, b_in=-4294967295] [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) VAL [\old(cond)=1, a=0, b=0, cond=1] [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) VAL [\old(cond)=1, a=0, b=0, cond=1] [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in VAL [\old(a_in)=-4294967297, \old(b_in)=-4294967295, a=-4294967297, a_in=-4294967297, b=0, b_in=-4294967295] [L727] 0 b=b_in VAL [\old(a_in)=-4294967297, \old(b_in)=-4294967295, a=-4294967297, a_in=-4294967297, b=-4294967295, b_in=-4294967295] [L728] 0 pthread_t t1, t2; VAL [\old(a_in)=-4294967297, \old(b_in)=-4294967295, a=-4294967297, a_in=-4294967297, b=-4294967295, b_in=-4294967295] [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=-4294967297, \old(b_in)=-4294967295, a=-4294967297, a_in=-4294967297, b=-4294967295, b_in=-4294967295, t1=-1] [L709] 1 a!=b VAL [\old(arg)={0:0}, a=-4294967297, arg={0:0}, b=-4294967295] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=-4294967297, \old(b_in)=-4294967295, a=-4294967297, a_in=-4294967297, b=-4294967295, b_in=-4294967295, t1=-1, t2=0] [L709] 1 a!=b VAL [\old(arg)={0:0}, a=-4294967297, arg={0:0}, b=-4294967295] [L709] COND TRUE 1 a!=b VAL [\old(arg)={0:0}, a=-4294967297, arg={0:0}, b=-4294967295] [L718] 2 a!=b VAL [\old(arg)={0:0}, a=-4294967297, arg={0:0}, b=-4294967295] [L711] CALL 1 __VERIFIER_atomic_dec_a() [L698] 1 a>b [L698] COND TRUE 1 a>b [L699] EXPR 1 a-b [L699] 1 a=a-b [L711] RET 1 __VERIFIER_atomic_dec_a() [L718] 2 a!=b VAL [\old(arg)={0:0}, a=-2, arg={0:0}, b=-4294967295] Now there is a data race on ~a~0 between C: a=a-b [699] and C: a!=b [718] - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 218 locations, 33 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: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 21 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.2s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! [2025-01-09 21:03:42,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(DATA-RACE)