./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version f8ab0bd5 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/08_rand_cas.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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:58:33,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:58:33,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-13 21:58:33,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:58:33,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:58:33,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:58:33,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:58:33,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:58:33,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:58:33,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:58:33,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:58:33,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:58:33,105 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:58:33,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:58:33,106 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:58:33,107 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:58:33,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:58:33,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:58:33,107 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 -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2025-03-13 21:58:33,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:58:33,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:58:33,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:58:33,322 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:58:33,322 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:58:33,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-13 21:58:34,412 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb13e52f/a348eaa778a045589f27925f51aee7c7/FLAG76d0ab236 [2025-03-13 21:58:34,674 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:58:34,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-13 21:58:34,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb13e52f/a348eaa778a045589f27925f51aee7c7/FLAG76d0ab236 [2025-03-13 21:58:34,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb13e52f/a348eaa778a045589f27925f51aee7c7 [2025-03-13 21:58:34,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:58:34,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:58:34,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:58:34,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:58:34,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:58:34,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:58:34" (1/1) ... [2025-03-13 21:58:34,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a88bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:34, skipping insertion in model container [2025-03-13 21:58:34,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:58:34" (1/1) ... [2025-03-13 21:58:35,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:58:35,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:58:35,286 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:58:35,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:58:35,347 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:58:35,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35 WrapperNode [2025-03-13 21:58:35,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:58:35,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:58:35,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:58:35,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:58:35,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,378 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 214 [2025-03-13 21:58:35,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:58:35,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:58:35,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:58:35,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:58:35,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,399 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:58:35,413 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:58:35,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:58:35,413 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:58:35,414 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (1/1) ... [2025-03-13 21:58:35,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:58:35,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:58:35,436 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) [2025-03-13 21:58:35,438 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 [2025-03-13 21:58:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-13 21:58:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-13 21:58:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-13 21:58:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-13 21:58:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:58:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:58:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:58:35,456 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:58:35,549 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:58:35,550 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:58:35,886 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2025-03-13 21:58:35,886 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2025-03-13 21:58:35,903 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:58:35,903 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:58:35,903 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:58:36,131 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:58:36,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:58:36 BoogieIcfgContainer [2025-03-13 21:58:36,132 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:58:36,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:58:36,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:58:36,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:58:36,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:58:34" (1/3) ... [2025-03-13 21:58:36,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e42f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:58:36, skipping insertion in model container [2025-03-13 21:58:36,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:35" (2/3) ... [2025-03-13 21:58:36,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e42f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:58:36, skipping insertion in model container [2025-03-13 21:58:36,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:58:36" (3/3) ... [2025-03-13 21:58:36,140 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-03-13 21:58:36,149 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:58:36,150 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 145 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2025-03-13 21:58:36,150 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:58:36,232 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:36,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 158 transitions, 320 flow [2025-03-13 21:58:36,324 INFO L124 PetriNetUnfolderBase]: 13/165 cut-off events. [2025-03-13 21:58:36,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:36,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 165 events. 13/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 328 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2025-03-13 21:58:36,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 158 transitions, 320 flow [2025-03-13 21:58:36,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 158 transitions, 320 flow [2025-03-13 21:58:36,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:36,350 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;@4cb1b743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:36,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-13 21:58:36,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:36,358 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-13 21:58:36,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:36,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:36,359 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] [2025-03-13 21:58:36,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-13 21:58:36,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1519577590, now seen corresponding path program 1 times [2025-03-13 21:58:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256057414] [2025-03-13 21:58:36,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:36,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:58:36,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:58:36,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:36,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256057414] [2025-03-13 21:58:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256057414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:36,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:58:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534841733] [2025-03-13 21:58:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:36,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:58:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:36,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:58:36,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:58:36,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2025-03-13 21:58:36,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 158 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2025-03-13 21:58:36,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:36,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2025-03-13 21:58:36,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:36,616 INFO L124 PetriNetUnfolderBase]: 4/129 cut-off events. [2025-03-13 21:58:36,616 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:58:36,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 129 events. 4/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 14/132 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2025-03-13 21:58:36,619 INFO L140 encePairwiseOnDemand]: 136/158 looper letters, 7 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-03-13 21:58:36,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 270 flow [2025-03-13 21:58:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:58:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:58:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2025-03-13 21:58:36,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8892405063291139 [2025-03-13 21:58:36,637 INFO L175 Difference]: Start difference. First operand has 148 places, 158 transitions, 320 flow. Second operand 2 states and 281 transitions. [2025-03-13 21:58:36,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 270 flow [2025-03-13 21:58:36,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:36,646 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 256 flow [2025-03-13 21:58:36,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2025-03-13 21:58:36,651 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -22 predicate places. [2025-03-13 21:58:36,651 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 256 flow [2025-03-13 21:58:36,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2025-03-13 21:58:36,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:36,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:36,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:58:36,653 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-13 21:58:36,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:36,654 INFO L85 PathProgramCache]: Analyzing trace with hash -25163250, now seen corresponding path program 1 times [2025-03-13 21:58:36,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:36,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478879474] [2025-03-13 21:58:36,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:36,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:36,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:58:36,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:58:36,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:36,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:36,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:36,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478879474] [2025-03-13 21:58:36,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478879474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:36,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:36,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:58:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103654583] [2025-03-13 21:58:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:36,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:58:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:36,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:58:36,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:58:36,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 158 [2025-03-13 21:58:36,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2025-03-13 21:58:36,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 158 [2025-03-13 21:58:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:36,794 INFO L124 PetriNetUnfolderBase]: 4/128 cut-off events. [2025-03-13 21:58:36,794 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:58:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 128 events. 4/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2025-03-13 21:58:36,795 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 8 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2025-03-13 21:58:36,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 274 flow [2025-03-13 21:58:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:58:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:58:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2025-03-13 21:58:36,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7953586497890295 [2025-03-13 21:58:36,800 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 256 flow. Second operand 3 states and 377 transitions. [2025-03-13 21:58:36,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 274 flow [2025-03-13 21:58:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:36,804 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 258 flow [2025-03-13 21:58:36,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2025-03-13 21:58:36,805 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -21 predicate places. [2025-03-13 21:58:36,805 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 258 flow [2025-03-13 21:58:36,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2025-03-13 21:58:36,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:36,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:36,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:58:36,806 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-13 21:58:36,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 239189684, now seen corresponding path program 1 times [2025-03-13 21:58:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576789945] [2025-03-13 21:58:36,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:36,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:58:36,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:58:36,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:36,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:36,821 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:36,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:58:36,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:58:36,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:36,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:36,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:36,868 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:36,869 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-03-13 21:58:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-03-13 21:58:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-03-13 21:58:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-03-13 21:58:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-03-13 21:58:36,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-03-13 21:58:36,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-03-13 21:58:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-03-13 21:58:36,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:58:36,874 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-13 21:58:36,877 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:36,877 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 21:58:36,951 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 292 transitions, 594 flow [2025-03-13 21:58:37,007 INFO L124 PetriNetUnfolderBase]: 26/308 cut-off events. [2025-03-13 21:58:37,007 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 21:58:37,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 308 events. 26/308 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1114 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 275. Up to 3 conditions per place. [2025-03-13 21:58:37,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 292 transitions, 594 flow [2025-03-13 21:58:37,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 292 transitions, 594 flow [2025-03-13 21:58:37,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:37,019 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;@4cb1b743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:37,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2025-03-13 21:58:37,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:37,021 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-13 21:58:37,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:37,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:37,022 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] [2025-03-13 21:58:37,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-13 21:58:37,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1396696815, now seen corresponding path program 1 times [2025-03-13 21:58:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215644518] [2025-03-13 21:58:37,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:37,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:58:37,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:58:37,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:37,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:37,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:37,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215644518] [2025-03-13 21:58:37,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215644518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:37,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:37,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:58:37,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702320093] [2025-03-13 21:58:37,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:37,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:58:37,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:37,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:58:37,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:58:37,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 292 [2025-03-13 21:58:37,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 292 transitions, 594 flow. Second operand has 2 states, 2 states have (on average 230.0) internal successors, (460), 2 states have internal predecessors, (460), 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) [2025-03-13 21:58:37,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:37,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 292 [2025-03-13 21:58:37,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:37,286 INFO L124 PetriNetUnfolderBase]: 78/1010 cut-off events. [2025-03-13 21:58:37,287 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-13 21:58:37,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1010 events. 78/1010 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6394 event pairs, 42 based on Foata normal form. 148/1050 useless extension candidates. Maximal degree in co-relation 959. Up to 99 conditions per place. [2025-03-13 21:58:37,294 INFO L140 encePairwiseOnDemand]: 249/292 looper letters, 14 selfloop transitions, 0 changer transitions 0/232 dead transitions. [2025-03-13 21:58:37,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 232 transitions, 502 flow [2025-03-13 21:58:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:58:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:58:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 515 transitions. [2025-03-13 21:58:37,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8818493150684932 [2025-03-13 21:58:37,299 INFO L175 Difference]: Start difference. First operand has 271 places, 292 transitions, 594 flow. Second operand 2 states and 515 transitions. [2025-03-13 21:58:37,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 232 transitions, 502 flow [2025-03-13 21:58:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 232 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:37,305 INFO L231 Difference]: Finished difference. Result has 230 places, 232 transitions, 474 flow [2025-03-13 21:58:37,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=474, PETRI_PLACES=230, PETRI_TRANSITIONS=232} [2025-03-13 21:58:37,306 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -41 predicate places. [2025-03-13 21:58:37,306 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 232 transitions, 474 flow [2025-03-13 21:58:37,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 230.0) internal successors, (460), 2 states have internal predecessors, (460), 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) [2025-03-13 21:58:37,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:37,306 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:37,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:58:37,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-13 21:58:37,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2099090733, now seen corresponding path program 1 times [2025-03-13 21:58:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985203548] [2025-03-13 21:58:37,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:37,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:58:37,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:58:37,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:37,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:37,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:37,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985203548] [2025-03-13 21:58:37,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985203548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:37,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:37,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:58:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159400360] [2025-03-13 21:58:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:37,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:58:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:37,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:58:37,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:58:37,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 292 [2025-03-13 21:58:37,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 232 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2025-03-13 21:58:37,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:37,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 292 [2025-03-13 21:58:37,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:37,710 INFO L124 PetriNetUnfolderBase]: 179/1809 cut-off events. [2025-03-13 21:58:37,710 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-03-13 21:58:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1809 events. 179/1809 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13932 event pairs, 45 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 2101. Up to 146 conditions per place. [2025-03-13 21:58:37,726 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 35 selfloop transitions, 6 changer transitions 0/251 dead transitions. [2025-03-13 21:58:37,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 251 transitions, 599 flow [2025-03-13 21:58:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:58:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:58:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2025-03-13 21:58:37,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8059360730593608 [2025-03-13 21:58:37,730 INFO L175 Difference]: Start difference. First operand has 230 places, 232 transitions, 474 flow. Second operand 3 states and 706 transitions. [2025-03-13 21:58:37,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 251 transitions, 599 flow [2025-03-13 21:58:37,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 251 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:37,736 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 526 flow [2025-03-13 21:58:37,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2025-03-13 21:58:37,738 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -37 predicate places. [2025-03-13 21:58:37,739 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 526 flow [2025-03-13 21:58:37,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2025-03-13 21:58:37,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:37,740 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:37,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:58:37,740 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-13 21:58:37,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1916823472, now seen corresponding path program 1 times [2025-03-13 21:58:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:37,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369346704] [2025-03-13 21:58:37,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:37,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-13 21:58:37,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-13 21:58:37,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:37,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:37,758 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:37,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-13 21:58:37,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-13 21:58:37,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:37,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:37,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:37,768 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:37,768 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2025-03-13 21:58:37,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2025-03-13 21:58:37,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2025-03-13 21:58:37,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2025-03-13 21:58:37,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2025-03-13 21:58:37,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2025-03-13 21:58:37,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2025-03-13 21:58:37,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2025-03-13 21:58:37,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2025-03-13 21:58:37,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:58:37,774 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-13 21:58:37,774 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:37,774 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-13 21:58:37,866 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:37,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 426 transitions, 870 flow [2025-03-13 21:58:37,943 INFO L124 PetriNetUnfolderBase]: 39/451 cut-off events. [2025-03-13 21:58:37,943 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-13 21:58:37,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 39/451 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2047 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 408. Up to 4 conditions per place. [2025-03-13 21:58:37,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 426 transitions, 870 flow [2025-03-13 21:58:37,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 426 transitions, 870 flow [2025-03-13 21:58:37,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:37,958 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;@4cb1b743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:37,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2025-03-13 21:58:37,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:37,961 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-13 21:58:37,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:37,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:37,961 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] [2025-03-13 21:58:37,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-13 21:58:37,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1614946636, now seen corresponding path program 1 times [2025-03-13 21:58:37,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:37,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300659968] [2025-03-13 21:58:37,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:37,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:37,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:58:37,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:58:37,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:37,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300659968] [2025-03-13 21:58:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300659968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:37,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:37,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:58:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395342487] [2025-03-13 21:58:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:37,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:58:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:37,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:58:37,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:58:37,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 426 [2025-03-13 21:58:37,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 426 transitions, 870 flow. Second operand has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2025-03-13 21:58:37,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:37,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 426 [2025-03-13 21:58:37,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:38,898 INFO L124 PetriNetUnfolderBase]: 894/7533 cut-off events. [2025-03-13 21:58:38,899 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2025-03-13 21:58:38,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 7533 events. 894/7533 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 83569 event pairs, 630 based on Foata normal form. 1377/8090 useless extension candidates. Maximal degree in co-relation 7358. Up to 1030 conditions per place. [2025-03-13 21:58:38,970 INFO L140 encePairwiseOnDemand]: 362/426 looper letters, 21 selfloop transitions, 0 changer transitions 0/338 dead transitions. [2025-03-13 21:58:38,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 338 transitions, 736 flow [2025-03-13 21:58:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:58:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:58:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2025-03-13 21:58:38,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8791079812206573 [2025-03-13 21:58:38,974 INFO L175 Difference]: Start difference. First operand has 394 places, 426 transitions, 870 flow. Second operand 2 states and 749 transitions. [2025-03-13 21:58:38,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 338 transitions, 736 flow [2025-03-13 21:58:38,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 338 transitions, 734 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:38,978 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 692 flow [2025-03-13 21:58:38,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=692, PETRI_PLACES=334, PETRI_TRANSITIONS=338} [2025-03-13 21:58:38,980 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -60 predicate places. [2025-03-13 21:58:38,980 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 692 flow [2025-03-13 21:58:38,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2025-03-13 21:58:38,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:38,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:38,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:58:38,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-13 21:58:38,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1480476008, now seen corresponding path program 1 times [2025-03-13 21:58:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528792784] [2025-03-13 21:58:38,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:38,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:38,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:58:38,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:58:38,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:38,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:39,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528792784] [2025-03-13 21:58:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528792784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:39,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:39,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:58:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473462562] [2025-03-13 21:58:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:39,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:58:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:39,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:58:39,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:58:39,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 426 [2025-03-13 21:58:39,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 338 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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) [2025-03-13 21:58:39,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:39,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 426 [2025-03-13 21:58:39,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:41,341 INFO L124 PetriNetUnfolderBase]: 3978/24874 cut-off events. [2025-03-13 21:58:41,341 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2025-03-13 21:58:41,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30384 conditions, 24874 events. 3978/24874 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 338920 event pairs, 1240 based on Foata normal form. 0/22285 useless extension candidates. Maximal degree in co-relation 30378. Up to 2807 conditions per place. [2025-03-13 21:58:41,513 INFO L140 encePairwiseOnDemand]: 414/426 looper letters, 53 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2025-03-13 21:58:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 367 transitions, 884 flow [2025-03-13 21:58:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:58:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:58:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2025-03-13 21:58:41,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8020344287949922 [2025-03-13 21:58:41,517 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 692 flow. Second operand 3 states and 1025 transitions. [2025-03-13 21:58:41,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 367 transitions, 884 flow [2025-03-13 21:58:41,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 367 transitions, 884 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:41,522 INFO L231 Difference]: Finished difference. Result has 338 places, 347 transitions, 770 flow [2025-03-13 21:58:41,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=770, PETRI_PLACES=338, PETRI_TRANSITIONS=347} [2025-03-13 21:58:41,523 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -56 predicate places. [2025-03-13 21:58:41,523 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 347 transitions, 770 flow [2025-03-13 21:58:41,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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) [2025-03-13 21:58:41,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:41,524 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:41,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:58:41,524 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err12ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-13 21:58:41,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1220243208, now seen corresponding path program 1 times [2025-03-13 21:58:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:41,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390359104] [2025-03-13 21:58:41,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:41,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:41,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:58:41,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:58:41,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:41,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390359104] [2025-03-13 21:58:41,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390359104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:41,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:41,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:58:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750685367] [2025-03-13 21:58:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:41,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:58:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:41,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:58:41,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:58:42,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 426 [2025-03-13 21:58:42,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 347 transitions, 770 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 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) [2025-03-13 21:58:42,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:42,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 426 [2025-03-13 21:58:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:50,729 INFO L124 PetriNetUnfolderBase]: 26035/96970 cut-off events. [2025-03-13 21:58:50,730 INFO L125 PetriNetUnfolderBase]: For 2551/2556 co-relation queries the response was YES. [2025-03-13 21:58:51,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138386 conditions, 96970 events. 26035/96970 cut-off events. For 2551/2556 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 1408093 event pairs, 14368 based on Foata normal form. 0/86546 useless extension candidates. Maximal degree in co-relation 138378. Up to 30134 conditions per place. [2025-03-13 21:58:51,784 INFO L140 encePairwiseOnDemand]: 395/426 looper letters, 111 selfloop transitions, 94 changer transitions 0/498 dead transitions. [2025-03-13 21:58:51,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 498 transitions, 1522 flow [2025-03-13 21:58:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:58:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:58:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2000 transitions. [2025-03-13 21:58:51,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7824726134585289 [2025-03-13 21:58:51,788 INFO L175 Difference]: Start difference. First operand has 338 places, 347 transitions, 770 flow. Second operand 6 states and 2000 transitions. [2025-03-13 21:58:51,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 498 transitions, 1522 flow [2025-03-13 21:58:51,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 498 transitions, 1504 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:58:51,807 INFO L231 Difference]: Finished difference. Result has 345 places, 444 transitions, 1324 flow [2025-03-13 21:58:51,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=345, PETRI_TRANSITIONS=444} [2025-03-13 21:58:51,808 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -49 predicate places. [2025-03-13 21:58:51,809 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 444 transitions, 1324 flow [2025-03-13 21:58:51,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 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) [2025-03-13 21:58:51,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:51,810 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:51,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 21:58:51,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-13 21:58:51,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1284464951, now seen corresponding path program 1 times [2025-03-13 21:58:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226298792] [2025-03-13 21:58:51,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:51,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:58:51,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:58:51,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:51,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:51,820 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:51,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:58:51,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:58:51,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:51,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:51,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:51,830 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2025-03-13 21:58:51,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (42 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2025-03-13 21:58:51,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2025-03-13 21:58:51,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2025-03-13 21:58:51,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2025-03-13 21:58:51,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2025-03-13 21:58:51,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2025-03-13 21:58:51,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2025-03-13 21:58:51,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2025-03-13 21:58:51,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2025-03-13 21:58:51,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2025-03-13 21:58:51,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 21:58:51,836 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-13 21:58:51,837 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:51,837 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-13 21:58:51,907 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:51,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 517 places, 560 transitions, 1148 flow [2025-03-13 21:58:51,979 INFO L124 PetriNetUnfolderBase]: 52/594 cut-off events. [2025-03-13 21:58:51,979 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-13 21:58:51,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 594 events. 52/594 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3037 event pairs, 0 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 541. Up to 5 conditions per place. [2025-03-13 21:58:51,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 560 transitions, 1148 flow [2025-03-13 21:58:51,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 560 transitions, 1148 flow [2025-03-13 21:58:51,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:51,998 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;@4cb1b743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:51,999 INFO L334 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2025-03-13 21:58:52,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:52,000 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-13 21:58:52,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:52,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:52,000 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] [2025-03-13 21:58:52,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-03-13 21:58:52,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1964564839, now seen corresponding path program 1 times [2025-03-13 21:58:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432801509] [2025-03-13 21:58:52,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:52,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:58:52,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:58:52,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:52,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:52,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432801509] [2025-03-13 21:58:52,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432801509] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:52,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:52,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:58:52,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940145938] [2025-03-13 21:58:52,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:52,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:58:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:52,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:58:52,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:58:52,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 560 [2025-03-13 21:58:52,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 560 transitions, 1148 flow. Second operand has 2 states, 2 states have (on average 436.0) internal successors, (872), 2 states have internal predecessors, (872), 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) [2025-03-13 21:58:52,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 560 [2025-03-13 21:58:52,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:58,908 INFO L124 PetriNetUnfolderBase]: 8668/55314 cut-off events. [2025-03-13 21:58:58,908 INFO L125 PetriNetUnfolderBase]: For 3752/3752 co-relation queries the response was YES. [2025-03-13 21:58:59,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66858 conditions, 55314 events. 8668/55314 cut-off events. For 3752/3752 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 853170 event pairs, 6804 based on Foata normal form. 12259/61706 useless extension candidates. Maximal degree in co-relation 55673. Up to 9605 conditions per place. [2025-03-13 21:58:59,808 INFO L140 encePairwiseOnDemand]: 475/560 looper letters, 28 selfloop transitions, 0 changer transitions 0/444 dead transitions. [2025-03-13 21:58:59,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 444 transitions, 972 flow [2025-03-13 21:58:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:58:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:58:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 983 transitions. [2025-03-13 21:58:59,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8776785714285714 [2025-03-13 21:58:59,811 INFO L175 Difference]: Start difference. First operand has 517 places, 560 transitions, 1148 flow. Second operand 2 states and 983 transitions. [2025-03-13 21:58:59,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 444 transitions, 972 flow [2025-03-13 21:58:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 444 transitions, 966 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:59,817 INFO L231 Difference]: Finished difference. Result has 438 places, 444 transitions, 910 flow [2025-03-13 21:58:59,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=560, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=910, PETRI_PLACES=438, PETRI_TRANSITIONS=444} [2025-03-13 21:58:59,818 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -79 predicate places. [2025-03-13 21:58:59,818 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 444 transitions, 910 flow [2025-03-13 21:58:59,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 436.0) internal successors, (872), 2 states have internal predecessors, (872), 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) [2025-03-13 21:58:59,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:59,819 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:59,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 21:58:59,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-03-13 21:58:59,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1838869469, now seen corresponding path program 1 times [2025-03-13 21:58:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:59,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099677656] [2025-03-13 21:58:59,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:59,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-13 21:58:59,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-13 21:58:59,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:59,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099677656] [2025-03-13 21:58:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099677656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:58:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802322924] [2025-03-13 21:58:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:59,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:58:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:59,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:58:59,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:58:59,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 560 [2025-03-13 21:58:59,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 444 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 420.3333333333333) internal successors, (1261), 3 states have internal predecessors, (1261), 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) [2025-03-13 21:58:59,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:59,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 560 [2025-03-13 21:58:59,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand