./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:45:57,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:45:57,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:45:57,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:45:57,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:45:57,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:45:57,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:45:57,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:45:57,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:45:57,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:45:57,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:45:57,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:45:57,919 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:45:57,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:45:57,920 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:45:57,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:45:57,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:45:57,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:45:57,921 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/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 -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2025-03-17 10:45:58,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:45:58,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:45:58,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:45:58,204 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:45:58,205 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:45:58,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2025-03-17 10:45:59,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406cc1652/0e842edc574d414993cac59b911a72d4/FLAGc2d13e1bc [2025-03-17 10:45:59,632 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:45:59,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2025-03-17 10:45:59,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406cc1652/0e842edc574d414993cac59b911a72d4/FLAGc2d13e1bc [2025-03-17 10:45:59,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406cc1652/0e842edc574d414993cac59b911a72d4 [2025-03-17 10:45:59,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:45:59,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:45:59,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:45:59,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:45:59,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:45:59,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:59" (1/1) ... [2025-03-17 10:45:59,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab64575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:59, skipping insertion in model container [2025-03-17 10:45:59,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:59" (1/1) ... [2025-03-17 10:45:59,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:46:00,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:46:00,236 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:46:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:46:00,315 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:46:00,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00 WrapperNode [2025-03-17 10:46:00,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:46:00,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:46:00,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:46:00,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:46:00,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,357 INFO L138 Inliner]: procedures = 170, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 116 [2025-03-17 10:46:00,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:46:00,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:46:00,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:46:00,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:46:00,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,379 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:46:00,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:46:00,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:46:00,385 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:46:00,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (1/1) ... [2025-03-17 10:46:00,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:46:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:46:00,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:46:00,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:46:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:46:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:46:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:46:00,436 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:46:00,532 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:46:00,533 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:46:00,723 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: havoc PseudoRandomUsingAtomic_nex_~#casret~0#1.base, PseudoRandomUsingAtomic_nex_~#casret~0#1.offset; [2025-03-17 10:46:00,724 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nex_~#casret~0#1.base, PseudoRandomUsingAtomic_nex_~#casret~0#1.offset); srcloc: null [2025-03-17 10:46:00,746 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:46:00,746 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:46:00,850 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:46:00,851 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 10:46:00,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:46:00 BoogieIcfgContainer [2025-03-17 10:46:00,851 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:46:00,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:46:00,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:46:00,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:46:00,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:45:59" (1/3) ... [2025-03-17 10:46:00,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44014273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:46:00, skipping insertion in model container [2025-03-17 10:46:00,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:00" (2/3) ... [2025-03-17 10:46:00,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44014273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:46:00, skipping insertion in model container [2025-03-17 10:46:00,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:46:00" (3/3) ... [2025-03-17 10:46:00,861 INFO L128 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2025-03-17 10:46:00,871 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:46:00,873 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 38_rand_cas_vs_concur.i that has 2 procedures, 88 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-03-17 10:46:00,873 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 10:46:00,927 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 192 flow [2025-03-17 10:46:01,000 INFO L124 PetriNetUnfolderBase]: 6/101 cut-off events. [2025-03-17 10:46:01,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:46:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 6/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2025-03-17 10:46:01,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 94 transitions, 192 flow [2025-03-17 10:46:01,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 94 transitions, 192 flow [2025-03-17 10:46:01,017 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:01,024 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;@7300feec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:01,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 10:46:01,032 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:01,032 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-03-17 10:46:01,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:46:01,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:01,033 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:01,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-17 10:46:01,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -962089780, now seen corresponding path program 1 times [2025-03-17 10:46:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:01,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408334964] [2025-03-17 10:46:01,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:01,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:46:01,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:46:01,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:01,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:01,138 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:46:01,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:46:01,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:46:01,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:01,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:01,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:46:01,168 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:46:01,169 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 10:46:01,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-17 10:46:01,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-17 10:46:01,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-17 10:46:01,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-17 10:46:01,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-17 10:46:01,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-17 10:46:01,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:46:01,173 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:46:01,177 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:46:01,177 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 10:46:01,234 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:01,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 166 transitions, 342 flow [2025-03-17 10:46:01,275 INFO L124 PetriNetUnfolderBase]: 12/182 cut-off events. [2025-03-17 10:46:01,275 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:46:01,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 182 events. 12/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 450 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 151. Up to 3 conditions per place. [2025-03-17 10:46:01,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 166 transitions, 342 flow [2025-03-17 10:46:01,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 166 transitions, 342 flow [2025-03-17 10:46:01,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:01,282 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;@7300feec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:01,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-17 10:46:01,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:01,291 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2025-03-17 10:46:01,291 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:46:01,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:01,291 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:01,291 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-17 10:46:01,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1398315799, now seen corresponding path program 1 times [2025-03-17 10:46:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106165798] [2025-03-17 10:46:01,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:01,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 10:46:01,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 10:46:01,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:01,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:01,319 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:46:01,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 10:46:01,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 10:46:01,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:01,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:01,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:46:01,340 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:46:01,340 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-03-17 10:46:01,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2025-03-17 10:46:01,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2025-03-17 10:46:01,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2025-03-17 10:46:01,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2025-03-17 10:46:01,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:46:01,343 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:46:01,343 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:46:01,344 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 10:46:01,433 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:01,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 238 transitions, 494 flow [2025-03-17 10:46:01,537 INFO L124 PetriNetUnfolderBase]: 18/263 cut-off events. [2025-03-17 10:46:01,538 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:46:01,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 263 events. 18/263 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 887 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 222. Up to 4 conditions per place. [2025-03-17 10:46:01,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 238 transitions, 494 flow [2025-03-17 10:46:01,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 238 transitions, 494 flow [2025-03-17 10:46:01,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:01,551 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;@7300feec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:01,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-17 10:46:01,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:01,561 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2025-03-17 10:46:01,562 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:46:01,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:01,563 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] [2025-03-17 10:46:01,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:46:01,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2065622761, now seen corresponding path program 1 times [2025-03-17 10:46:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817557047] [2025-03-17 10:46:01,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:01,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 10:46:01,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 10:46:01,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:01,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:46:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:46:02,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:46:02,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817557047] [2025-03-17 10:46:02,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817557047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:46:02,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:46:02,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:46:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114783345] [2025-03-17 10:46:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:46:02,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:46:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:46:02,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:46:02,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:46:02,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 238 [2025-03-17 10:46:02,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 238 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 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) [2025-03-17 10:46:02,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:46:02,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 238 [2025-03-17 10:46:02,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:46:03,954 INFO L124 PetriNetUnfolderBase]: 2059/10020 cut-off events. [2025-03-17 10:46:03,954 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2025-03-17 10:46:03,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13363 conditions, 10020 events. 2059/10020 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 110778 event pairs, 154 based on Foata normal form. 2605/11772 useless extension candidates. Maximal degree in co-relation 10384. Up to 1016 conditions per place. [2025-03-17 10:46:04,021 INFO L140 encePairwiseOnDemand]: 192/238 looper letters, 78 selfloop transitions, 36 changer transitions 0/293 dead transitions. [2025-03-17 10:46:04,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 293 transitions, 880 flow [2025-03-17 10:46:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:46:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:46:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1352 transitions. [2025-03-17 10:46:04,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9467787114845938 [2025-03-17 10:46:04,034 INFO L175 Difference]: Start difference. First operand has 227 places, 238 transitions, 494 flow. Second operand 6 states and 1352 transitions. [2025-03-17 10:46:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 293 transitions, 880 flow [2025-03-17 10:46:04,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 293 transitions, 870 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-17 10:46:04,044 INFO L231 Difference]: Finished difference. Result has 215 places, 240 transitions, 682 flow [2025-03-17 10:46:04,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=215, PETRI_TRANSITIONS=240} [2025-03-17 10:46:04,049 INFO L279 CegarLoopForPetriNet]: 227 programPoint places, -12 predicate places. [2025-03-17 10:46:04,049 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 240 transitions, 682 flow [2025-03-17 10:46:04,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 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) [2025-03-17 10:46:04,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:04,050 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:04,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:46:04,050 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:46:04,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1868288689, now seen corresponding path program 1 times [2025-03-17 10:46:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:04,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221963217] [2025-03-17 10:46:04,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:04,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 10:46:04,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 10:46:04,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:04,066 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:46:04,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 10:46:04,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 10:46:04,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:04,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:46:04,079 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:46:04,080 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-17 10:46:04,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-17 10:46:04,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-17 10:46:04,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:46:04,084 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:46:04,084 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:46:04,084 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 10:46:04,152 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 310 transitions, 648 flow [2025-03-17 10:46:04,196 INFO L124 PetriNetUnfolderBase]: 24/344 cut-off events. [2025-03-17 10:46:04,196 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:46:04,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 344 events. 24/344 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1346 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 293. Up to 5 conditions per place. [2025-03-17 10:46:04,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 310 transitions, 648 flow [2025-03-17 10:46:04,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 310 transitions, 648 flow [2025-03-17 10:46:04,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:04,205 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;@7300feec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:04,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-03-17 10:46:04,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:04,209 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2025-03-17 10:46:04,209 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:46:04,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:04,209 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] [2025-03-17 10:46:04,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2025-03-17 10:46:04,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1673625107, now seen corresponding path program 1 times [2025-03-17 10:46:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161500904] [2025-03-17 10:46:04,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:04,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 10:46:04,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 10:46:04,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:46:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:46:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:46:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161500904] [2025-03-17 10:46:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161500904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:46:04,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:46:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:46:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64397368] [2025-03-17 10:46:04,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:46:04,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:46:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:46:04,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:46:04,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:46:04,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 310 [2025-03-17 10:46:04,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 310 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 241.16666666666666) internal successors, (1447), 6 states have internal predecessors, (1447), 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) [2025-03-17 10:46:04,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:46:04,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 310 [2025-03-17 10:46:04,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:46:15,509 INFO L124 PetriNetUnfolderBase]: 30584/104464 cut-off events. [2025-03-17 10:46:15,509 INFO L125 PetriNetUnfolderBase]: For 10334/10334 co-relation queries the response was YES. [2025-03-17 10:46:16,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149371 conditions, 104464 events. 30584/104464 cut-off events. For 10334/10334 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 1536292 event pairs, 2775 based on Foata normal form. 30491/125495 useless extension candidates. Maximal degree in co-relation 111850. Up to 13444 conditions per place. [2025-03-17 10:46:16,687 INFO L140 encePairwiseOnDemand]: 249/310 looper letters, 105 selfloop transitions, 48 changer transitions 0/386 dead transitions. [2025-03-17 10:46:16,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 386 transitions, 1190 flow [2025-03-17 10:46:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:46:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:46:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1762 transitions. [2025-03-17 10:46:16,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9473118279569892 [2025-03-17 10:46:16,691 INFO L175 Difference]: Start difference. First operand has 295 places, 310 transitions, 648 flow. Second operand 6 states and 1762 transitions. [2025-03-17 10:46:16,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 386 transitions, 1190 flow [2025-03-17 10:46:16,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 386 transitions, 1160 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-17 10:46:16,705 INFO L231 Difference]: Finished difference. Result has 277 places, 314 transitions, 898 flow [2025-03-17 10:46:16,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=898, PETRI_PLACES=277, PETRI_TRANSITIONS=314} [2025-03-17 10:46:16,707 INFO L279 CegarLoopForPetriNet]: 295 programPoint places, -18 predicate places. [2025-03-17 10:46:16,708 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 314 transitions, 898 flow [2025-03-17 10:46:16,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.16666666666666) internal successors, (1447), 6 states have internal predecessors, (1447), 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) [2025-03-17 10:46:16,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:16,709 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:16,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:46:16,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2025-03-17 10:46:16,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1953889306, now seen corresponding path program 1 times [2025-03-17 10:46:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:16,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857544199] [2025-03-17 10:46:16,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:16,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:16,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 10:46:16,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 10:46:16,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:16,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:16,719 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:46:16,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 10:46:16,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 10:46:16,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:16,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:16,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:46:16,728 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2025-03-17 10:46:16,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2025-03-17 10:46:16,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2025-03-17 10:46:16,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2025-03-17 10:46:16,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2025-03-17 10:46:16,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:46:16,731 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:46:16,731 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:46:16,731 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-17 10:46:16,809 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:16,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 382 transitions, 804 flow [2025-03-17 10:46:16,850 INFO L124 PetriNetUnfolderBase]: 30/425 cut-off events. [2025-03-17 10:46:16,850 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-17 10:46:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 425 events. 30/425 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1828 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 364. Up to 6 conditions per place. [2025-03-17 10:46:16,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 382 transitions, 804 flow [2025-03-17 10:46:16,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 382 transitions, 804 flow [2025-03-17 10:46:16,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:16,860 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;@7300feec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:16,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-17 10:46:16,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:16,864 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2025-03-17 10:46:16,864 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:46:16,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:16,864 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] [2025-03-17 10:46:16,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-17 10:46:16,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1997502205, now seen corresponding path program 1 times [2025-03-17 10:46:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938195016] [2025-03-17 10:46:16,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:16,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 10:46:16,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 10:46:16,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:16,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:46:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:46:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:46:17,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938195016] [2025-03-17 10:46:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938195016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:46:17,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:46:17,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:46:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204582233] [2025-03-17 10:46:17,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:46:17,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:46:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:46:17,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:46:17,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:46:17,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 382 [2025-03-17 10:46:17,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 382 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 296.1666666666667) internal successors, (1777), 6 states have internal predecessors, (1777), 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) [2025-03-17 10:46:17,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:46:17,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 382 [2025-03-17 10:46:17,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand