./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 735b3cc8 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/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:19:10,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:19:10,911 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-14 01:19:10,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:19:10,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:19:10,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:19:10,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:19:10,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:19:10,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:19:10,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:19:10,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:19:10,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:19:10,948 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:19:10,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:19:10,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:19:10,950 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:19:10,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:19:10,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:19:10,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:19:10,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:19:10,952 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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2025-03-14 01:19:11,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:19:11,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:19:11,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:19:11,184 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:19:11,184 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:19:11,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-14 01:19:12,302 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fe7b42d/8275d2e4c8f84c319be6df1ffd9e926b/FLAGa3fe97c2d [2025-03-14 01:19:12,616 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:19:12,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-14 01:19:12,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fe7b42d/8275d2e4c8f84c319be6df1ffd9e926b/FLAGa3fe97c2d [2025-03-14 01:19:12,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fe7b42d/8275d2e4c8f84c319be6df1ffd9e926b [2025-03-14 01:19:12,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:19:12,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:19:12,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:19:12,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:19:12,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:19:12,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:19:12" (1/1) ... [2025-03-14 01:19:12,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c31d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:12, skipping insertion in model container [2025-03-14 01:19:12,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:19:12" (1/1) ... [2025-03-14 01:19:12,918 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:19:13,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:19:13,108 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:19:13,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:19:13,181 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:19:13,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13 WrapperNode [2025-03-14 01:19:13,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:19:13,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:19:13,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:19:13,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:19:13,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,209 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 69 [2025-03-14 01:19:13,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:19:13,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:19:13,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:19:13,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:19:13,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:19:13,223 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:19:13,223 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:19:13,223 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:19:13,223 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (1/1) ... [2025-03-14 01:19:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:19:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:19:13,247 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) [2025-03-14 01:19:13,248 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 [2025-03-14 01:19:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-14 01:19:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-14 01:19:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:19:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 01:19:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:19:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:19:13,265 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:19:13,344 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:19:13,346 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:19:13,480 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:19:13,482 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:19:13,483 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:19:13,550 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:19:13,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:19:13 BoogieIcfgContainer [2025-03-14 01:19:13,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:19:13,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:19:13,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:19:13,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:19:13,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:19:12" (1/3) ... [2025-03-14 01:19:13,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557fdffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:19:13, skipping insertion in model container [2025-03-14 01:19:13,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:13" (2/3) ... [2025-03-14 01:19:13,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557fdffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:19:13, skipping insertion in model container [2025-03-14 01:19:13,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:19:13" (3/3) ... [2025-03-14 01:19:13,560 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2025-03-14 01:19:13,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:19:13,572 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-14 01:19:13,572 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:19:13,609 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:13,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 118 flow [2025-03-14 01:19:13,666 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2025-03-14 01:19:13,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:19:13,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2025-03-14 01:19:13,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 118 flow [2025-03-14 01:19:13,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 118 flow [2025-03-14 01:19:13,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:13,695 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:13,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-14 01:19:13,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:13,704 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-14 01:19:13,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:19:13,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:13,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:13,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-03-14 01:19:13,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 484549849, now seen corresponding path program 1 times [2025-03-14 01:19:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:13,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153401017] [2025-03-14 01:19:13,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:13,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:19:13,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:19:13,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:13,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:13,787 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:13,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:19:13,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:19:13,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:13,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:13,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:13,813 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:13,814 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-14 01:19:13,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-14 01:19:13,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-14 01:19:13,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-14 01:19:13,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-14 01:19:13,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-14 01:19:13,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-03-14 01:19:13,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-14 01:19:13,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-14 01:19:13,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:19:13,818 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 01:19:13,821 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:13,821 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-14 01:19:13,849 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:13,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 198 flow [2025-03-14 01:19:13,881 INFO L124 PetriNetUnfolderBase]: 10/110 cut-off events. [2025-03-14 01:19:13,881 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:19:13,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 110 events. 10/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2025-03-14 01:19:13,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 94 transitions, 198 flow [2025-03-14 01:19:13,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 198 flow [2025-03-14 01:19:13,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:13,888 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:13,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-14 01:19:13,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:13,902 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2025-03-14 01:19:13,902 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:19:13,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:13,903 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:13,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-14 01:19:13,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1452932585, now seen corresponding path program 1 times [2025-03-14 01:19:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:13,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585693885] [2025-03-14 01:19:13,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:13,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:19:13,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:19:13,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:13,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:13,925 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:13,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-14 01:19:13,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-14 01:19:13,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:13,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:13,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:13,965 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-14 01:19:13,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-14 01:19:13,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-14 01:19:13,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:19:13,966 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 01:19:13,967 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:13,967 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-14 01:19:13,996 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 280 flow [2025-03-14 01:19:14,032 INFO L124 PetriNetUnfolderBase]: 15/156 cut-off events. [2025-03-14 01:19:14,032 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-14 01:19:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 15/156 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 415 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-03-14 01:19:14,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 280 flow [2025-03-14 01:19:14,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 280 flow [2025-03-14 01:19:14,036 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:14,036 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:14,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-14 01:19:14,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:14,044 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-14 01:19:14,044 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:14,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:14,044 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] [2025-03-14 01:19:14,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:19:14,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1590255476, now seen corresponding path program 1 times [2025-03-14 01:19:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079747494] [2025-03-14 01:19:14,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:14,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:14,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:14,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079747494] [2025-03-14 01:19:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079747494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930753518] [2025-03-14 01:19:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:14,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:14,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:14,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:14,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:14,140 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 131 [2025-03-14 01:19:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2025-03-14 01:19:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:14,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 131 [2025-03-14 01:19:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:14,245 INFO L124 PetriNetUnfolderBase]: 81/506 cut-off events. [2025-03-14 01:19:14,246 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-03-14 01:19:14,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 506 events. 81/506 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2618 event pairs, 42 based on Foata normal form. 104/553 useless extension candidates. Maximal degree in co-relation 184. Up to 82 conditions per place. [2025-03-14 01:19:14,251 INFO L140 encePairwiseOnDemand]: 112/131 looper letters, 9 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2025-03-14 01:19:14,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 242 flow [2025-03-14 01:19:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2025-03-14 01:19:14,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2025-03-14 01:19:14,263 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 280 flow. Second operand 2 states and 228 transitions. [2025-03-14 01:19:14,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 242 flow [2025-03-14 01:19:14,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 240 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:14,271 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2025-03-14 01:19:14,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2025-03-14 01:19:14,275 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2025-03-14 01:19:14,275 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2025-03-14 01:19:14,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2025-03-14 01:19:14,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:14,276 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:14,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:19:14,276 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:19:14,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2000917470, now seen corresponding path program 1 times [2025-03-14 01:19:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233400656] [2025-03-14 01:19:14,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:14,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-14 01:19:14,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-14 01:19:14,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:14,298 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:14,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-14 01:19:14,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-14 01:19:14,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:14,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:14,323 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-14 01:19:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-14 01:19:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-14 01:19:14,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:19:14,326 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:14,327 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:14,328 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-14 01:19:14,368 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 168 transitions, 364 flow [2025-03-14 01:19:14,390 INFO L124 PetriNetUnfolderBase]: 20/202 cut-off events. [2025-03-14 01:19:14,391 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-14 01:19:14,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 202 events. 20/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 603 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 164. Up to 5 conditions per place. [2025-03-14 01:19:14,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 168 transitions, 364 flow [2025-03-14 01:19:14,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 168 transitions, 364 flow [2025-03-14 01:19:14,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:14,397 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:14,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-14 01:19:14,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:14,418 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-14 01:19:14,418 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:14,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:14,418 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] [2025-03-14 01:19:14,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-14 01:19:14,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1972792988, now seen corresponding path program 1 times [2025-03-14 01:19:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909956544] [2025-03-14 01:19:14,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:14,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:14,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:14,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:14,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909956544] [2025-03-14 01:19:14,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909956544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:14,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653170259] [2025-03-14 01:19:14,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:14,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:14,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:14,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:14,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 168 [2025-03-14 01:19:14,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2025-03-14 01:19:14,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:14,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 168 [2025-03-14 01:19:14,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:14,638 INFO L124 PetriNetUnfolderBase]: 324/1604 cut-off events. [2025-03-14 01:19:14,638 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2025-03-14 01:19:14,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1604 events. 324/1604 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11980 event pairs, 204 based on Foata normal form. 392/1819 useless extension candidates. Maximal degree in co-relation 639. Up to 325 conditions per place. [2025-03-14 01:19:14,651 INFO L140 encePairwiseOnDemand]: 143/168 looper letters, 12 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2025-03-14 01:19:14,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 316 flow [2025-03-14 01:19:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2025-03-14 01:19:14,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2025-03-14 01:19:14,654 INFO L175 Difference]: Start difference. First operand has 157 places, 168 transitions, 364 flow. Second operand 2 states and 291 transitions. [2025-03-14 01:19:14,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 316 flow [2025-03-14 01:19:14,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 310 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:14,659 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 286 flow [2025-03-14 01:19:14,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2025-03-14 01:19:14,661 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, -27 predicate places. [2025-03-14 01:19:14,661 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 286 flow [2025-03-14 01:19:14,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2025-03-14 01:19:14,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:14,662 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] [2025-03-14 01:19:14,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 01:19:14,662 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-14 01:19:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 186250766, now seen corresponding path program 1 times [2025-03-14 01:19:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982649755] [2025-03-14 01:19:14,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:14,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-14 01:19:14,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-14 01:19:14,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:14,689 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:14,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-14 01:19:14,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-14 01:19:14,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:14,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:14,710 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-03-14 01:19:14,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-03-14 01:19:14,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-03-14 01:19:14,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 01:19:14,711 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:14,711 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:14,711 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-14 01:19:14,737 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:14,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 450 flow [2025-03-14 01:19:14,756 INFO L124 PetriNetUnfolderBase]: 25/248 cut-off events. [2025-03-14 01:19:14,756 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-14 01:19:14,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 248 events. 25/248 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 801 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 215. Up to 6 conditions per place. [2025-03-14 01:19:14,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 450 flow [2025-03-14 01:19:14,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 450 flow [2025-03-14 01:19:14,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:14,761 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:14,761 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-14 01:19:14,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:14,766 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-14 01:19:14,766 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:14,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:14,766 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] [2025-03-14 01:19:14,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-14 01:19:14,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1040471167, now seen corresponding path program 1 times [2025-03-14 01:19:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:14,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735191767] [2025-03-14 01:19:14,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:14,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:14,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:14,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:14,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:14,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:14,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735191767] [2025-03-14 01:19:14,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735191767] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:14,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:14,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649210632] [2025-03-14 01:19:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:14,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:14,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:14,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:14,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 205 [2025-03-14 01:19:14,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2025-03-14 01:19:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:14,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 205 [2025-03-14 01:19:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:15,439 INFO L124 PetriNetUnfolderBase]: 1215/5060 cut-off events. [2025-03-14 01:19:15,439 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2025-03-14 01:19:15,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 5060 events. 1215/5060 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 48389 event pairs, 852 based on Foata normal form. 1418/5941 useless extension candidates. Maximal degree in co-relation 2142. Up to 1216 conditions per place. [2025-03-14 01:19:15,499 INFO L140 encePairwiseOnDemand]: 174/205 looper letters, 15 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2025-03-14 01:19:15,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 392 flow [2025-03-14 01:19:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 354 transitions. [2025-03-14 01:19:15,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8634146341463415 [2025-03-14 01:19:15,501 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 450 flow. Second operand 2 states and 354 transitions. [2025-03-14 01:19:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 392 flow [2025-03-14 01:19:15,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 380 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:15,510 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 350 flow [2025-03-14 01:19:15,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2025-03-14 01:19:15,511 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, -33 predicate places. [2025-03-14 01:19:15,511 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 350 flow [2025-03-14 01:19:15,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2025-03-14 01:19:15,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:15,511 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:15,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:19:15,512 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-14 01:19:15,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1336089465, now seen corresponding path program 1 times [2025-03-14 01:19:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:15,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483160467] [2025-03-14 01:19:15,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:15,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-14 01:19:15,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:19:15,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:15,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:15,527 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:15,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-14 01:19:15,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-14 01:19:15,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:15,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:15,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:15,541 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:15,541 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-14 01:19:15,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-14 01:19:15,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-14 01:19:15,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-14 01:19:15,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-14 01:19:15,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-14 01:19:15,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-14 01:19:15,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-14 01:19:15,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-14 01:19:15,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-14 01:19:15,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-14 01:19:15,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-14 01:19:15,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-14 01:19:15,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-14 01:19:15,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:19:15,545 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:15,545 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:15,545 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-14 01:19:15,577 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:15,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 242 transitions, 538 flow [2025-03-14 01:19:15,601 INFO L124 PetriNetUnfolderBase]: 30/294 cut-off events. [2025-03-14 01:19:15,601 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-14 01:19:15,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 294 events. 30/294 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 997 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2025-03-14 01:19:15,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 242 transitions, 538 flow [2025-03-14 01:19:15,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 242 transitions, 538 flow [2025-03-14 01:19:15,606 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:15,606 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:15,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-14 01:19:15,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:15,609 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-14 01:19:15,609 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:15,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:15,609 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] [2025-03-14 01:19:15,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-14 01:19:15,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1897366927, now seen corresponding path program 1 times [2025-03-14 01:19:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:15,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148704649] [2025-03-14 01:19:15,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:15,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:15,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:15,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:15,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148704649] [2025-03-14 01:19:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148704649] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:15,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:15,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762894575] [2025-03-14 01:19:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:15,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:15,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:15,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:15,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 242 [2025-03-14 01:19:15,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 242 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2025-03-14 01:19:15,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:15,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 242 [2025-03-14 01:19:15,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:17,660 INFO L124 PetriNetUnfolderBase]: 4374/15914 cut-off events. [2025-03-14 01:19:17,660 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2025-03-14 01:19:17,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 15914 events. 4374/15914 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 181071 event pairs, 3282 based on Foata normal form. 4982/19279 useless extension candidates. Maximal degree in co-relation 7056. Up to 4375 conditions per place. [2025-03-14 01:19:17,832 INFO L140 encePairwiseOnDemand]: 205/242 looper letters, 18 selfloop transitions, 0 changer transitions 0/190 dead transitions. [2025-03-14 01:19:17,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 470 flow [2025-03-14 01:19:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2025-03-14 01:19:17,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8615702479338843 [2025-03-14 01:19:17,834 INFO L175 Difference]: Start difference. First operand has 225 places, 242 transitions, 538 flow. Second operand 2 states and 417 transitions. [2025-03-14 01:19:17,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 470 flow [2025-03-14 01:19:17,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 450 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:17,845 INFO L231 Difference]: Finished difference. Result has 186 places, 190 transitions, 414 flow [2025-03-14 01:19:17,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=186, PETRI_TRANSITIONS=190} [2025-03-14 01:19:17,846 INFO L279 CegarLoopForPetriNet]: 225 programPoint places, -39 predicate places. [2025-03-14 01:19:17,846 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 190 transitions, 414 flow [2025-03-14 01:19:17,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2025-03-14 01:19:17,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:17,847 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:17,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:19:17,847 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-14 01:19:17,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1388591913, now seen corresponding path program 1 times [2025-03-14 01:19:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185329935] [2025-03-14 01:19:17,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:17,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-14 01:19:17,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-14 01:19:17,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:17,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:17,866 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:17,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-14 01:19:17,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-14 01:19:17,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:17,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:17,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:17,890 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:17,890 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-03-14 01:19:17,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-03-14 01:19:17,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-03-14 01:19:17,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-03-14 01:19:17,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-03-14 01:19:17,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-03-14 01:19:17,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:19:17,895 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:17,896 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:17,896 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-03-14 01:19:17,934 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:17,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 628 flow [2025-03-14 01:19:17,959 INFO L124 PetriNetUnfolderBase]: 35/340 cut-off events. [2025-03-14 01:19:17,960 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-14 01:19:17,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 340 events. 35/340 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1203 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2025-03-14 01:19:17,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 279 transitions, 628 flow [2025-03-14 01:19:17,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 279 transitions, 628 flow [2025-03-14 01:19:17,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:17,966 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:17,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-14 01:19:17,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:17,968 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-14 01:19:17,968 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:17,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:17,969 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] [2025-03-14 01:19:17,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-14 01:19:17,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1593948402, now seen corresponding path program 1 times [2025-03-14 01:19:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:17,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694163190] [2025-03-14 01:19:17,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:17,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:17,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:17,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:17,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:17,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694163190] [2025-03-14 01:19:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694163190] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:17,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295000917] [2025-03-14 01:19:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:17,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:17,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:17,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:17,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 279 [2025-03-14 01:19:17,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 279 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2025-03-14 01:19:17,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:17,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 279 [2025-03-14 01:19:17,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:24,643 INFO L124 PetriNetUnfolderBase]: 15309/49934 cut-off events. [2025-03-14 01:19:24,643 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2025-03-14 01:19:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73453 conditions, 49934 events. 15309/49934 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 653357 event pairs, 12030 based on Foata normal form. 17132/62209 useless extension candidates. Maximal degree in co-relation 23013. Up to 15310 conditions per place. [2025-03-14 01:19:25,601 INFO L140 encePairwiseOnDemand]: 236/279 looper letters, 21 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2025-03-14 01:19:25,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 219 transitions, 550 flow [2025-03-14 01:19:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2025-03-14 01:19:25,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2025-03-14 01:19:25,603 INFO L175 Difference]: Start difference. First operand has 259 places, 279 transitions, 628 flow. Second operand 2 states and 480 transitions. [2025-03-14 01:19:25,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 219 transitions, 550 flow [2025-03-14 01:19:25,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 520 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:25,639 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 478 flow [2025-03-14 01:19:25,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2025-03-14 01:19:25,640 INFO L279 CegarLoopForPetriNet]: 259 programPoint places, -45 predicate places. [2025-03-14 01:19:25,640 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 478 flow [2025-03-14 01:19:25,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2025-03-14 01:19:25,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:25,641 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:25,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:19:25,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-14 01:19:25,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1153698348, now seen corresponding path program 1 times [2025-03-14 01:19:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:25,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576451777] [2025-03-14 01:19:25,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:25,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-14 01:19:25,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:19:25,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:25,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:25,657 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:25,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-14 01:19:25,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:19:25,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:25,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:25,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:25,677 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:25,677 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-03-14 01:19:25,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-03-14 01:19:25,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-03-14 01:19:25,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-03-14 01:19:25,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-03-14 01:19:25,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-03-14 01:19:25,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-14 01:19:25,680 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:25,681 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:25,681 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-03-14 01:19:25,875 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:25,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 316 transitions, 720 flow [2025-03-14 01:19:25,908 INFO L124 PetriNetUnfolderBase]: 40/386 cut-off events. [2025-03-14 01:19:25,908 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-03-14 01:19:25,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 386 events. 40/386 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1391 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 374. Up to 9 conditions per place. [2025-03-14 01:19:25,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 316 transitions, 720 flow [2025-03-14 01:19:25,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 316 transitions, 720 flow [2025-03-14 01:19:25,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:25,919 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:25,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-14 01:19:25,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:25,922 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-14 01:19:25,922 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:25,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:25,922 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] [2025-03-14 01:19:25,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-14 01:19:25,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash -648100130, now seen corresponding path program 1 times [2025-03-14 01:19:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213322172] [2025-03-14 01:19:25,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:25,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:25,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:25,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:25,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213322172] [2025-03-14 01:19:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213322172] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:25,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:25,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570306257] [2025-03-14 01:19:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:25,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:25,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:25,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:25,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 316 [2025-03-14 01:19:25,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 316 transitions, 720 flow. Second operand has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2025-03-14 01:19:25,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:25,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 316 [2025-03-14 01:19:25,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:50,993 INFO L124 PetriNetUnfolderBase]: 52488/156368 cut-off events. [2025-03-14 01:19:50,993 INFO L125 PetriNetUnfolderBase]: For 167032/167032 co-relation queries the response was YES. [2025-03-14 01:19:54,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236750 conditions, 156368 events. 52488/156368 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 2279371 event pairs, 42648 based on Foata normal form. 57956/199747 useless extension candidates. Maximal degree in co-relation 74529. Up to 52489 conditions per place. [2025-03-14 01:19:55,496 INFO L140 encePairwiseOnDemand]: 267/316 looper letters, 24 selfloop transitions, 0 changer transitions 0/248 dead transitions. [2025-03-14 01:19:55,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 248 transitions, 632 flow [2025-03-14 01:19:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 01:19:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 01:19:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 543 transitions. [2025-03-14 01:19:55,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8591772151898734 [2025-03-14 01:19:55,498 INFO L175 Difference]: Start difference. First operand has 293 places, 316 transitions, 720 flow. Second operand 2 states and 543 transitions. [2025-03-14 01:19:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 248 transitions, 632 flow [2025-03-14 01:19:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 248 transitions, 590 flow, removed 21 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:55,747 INFO L231 Difference]: Finished difference. Result has 242 places, 248 transitions, 542 flow [2025-03-14 01:19:55,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=242, PETRI_TRANSITIONS=248} [2025-03-14 01:19:55,748 INFO L279 CegarLoopForPetriNet]: 293 programPoint places, -51 predicate places. [2025-03-14 01:19:55,748 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 248 transitions, 542 flow [2025-03-14 01:19:55,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2025-03-14 01:19:55,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:55,749 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:55,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 01:19:55,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-14 01:19:55,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -799788952, now seen corresponding path program 1 times [2025-03-14 01:19:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:55,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462560493] [2025-03-14 01:19:55,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:55,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-14 01:19:55,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-14 01:19:55,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:55,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:55,770 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:55,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-14 01:19:55,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-14 01:19:55,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:55,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:55,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:55,787 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:55,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2025-03-14 01:19:55,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2025-03-14 01:19:55,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2025-03-14 01:19:55,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2025-03-14 01:19:55,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2025-03-14 01:19:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-14 01:19:55,791 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:55,791 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:55,791 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2025-03-14 01:19:55,843 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:55,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 353 transitions, 814 flow [2025-03-14 01:19:55,898 INFO L124 PetriNetUnfolderBase]: 45/432 cut-off events. [2025-03-14 01:19:55,898 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-03-14 01:19:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 432 events. 45/432 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1592 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 430. Up to 10 conditions per place. [2025-03-14 01:19:55,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 353 transitions, 814 flow [2025-03-14 01:19:55,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 353 transitions, 814 flow [2025-03-14 01:19:55,914 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:55,914 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;@11268888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:55,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-03-14 01:19:55,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:55,920 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-14 01:19:55,921 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:19:55,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:55,921 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] [2025-03-14 01:19:55,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-03-14 01:19:55,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -574822445, now seen corresponding path program 1 times [2025-03-14 01:19:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721084666] [2025-03-14 01:19:55,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:55,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:55,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:55,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:55,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:55,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:55,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721084666] [2025-03-14 01:19:55,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721084666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:55,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:55,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 01:19:55,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336610850] [2025-03-14 01:19:55,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:55,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 01:19:55,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:55,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 01:19:55,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 01:19:55,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 353 [2025-03-14 01:19:55,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 353 transitions, 814 flow. Second operand has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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) [2025-03-14 01:19:55,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:55,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 353 [2025-03-14 01:19:55,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand