./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:04:25,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:04:25,428 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:04:25,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:04:25,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:04:25,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:04:25,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:04:25,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:04:25,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:04:25,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:04:25,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:04:25,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:04:25,459 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:04:25,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:04:25,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:04:25,461 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:04:25,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:04:25,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:04:25,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:04:25,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:04:25,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:04:25,463 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2025-01-09 21:04:25,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:04:25,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:04:25,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:04:25,667 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:04:25,667 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:04:25,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-01-09 21:04:26,800 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd676d660/a76c5769a9f048d192b6b62f37d5878a/FLAG7c97a3f5c [2025-01-09 21:04:27,129 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:04:27,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-01-09 21:04:27,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd676d660/a76c5769a9f048d192b6b62f37d5878a/FLAG7c97a3f5c [2025-01-09 21:04:27,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd676d660/a76c5769a9f048d192b6b62f37d5878a [2025-01-09 21:04:27,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:04:27,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:04:27,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:04:27,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:04:27,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:04:27,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b6f424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27, skipping insertion in model container [2025-01-09 21:04:27,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:04:27,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:04:27,648 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:04:27,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:04:27,721 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:04:27,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27 WrapperNode [2025-01-09 21:04:27,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:04:27,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:04:27,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:04:27,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:04:27,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,750 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 214 [2025-01-09 21:04:27,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:04:27,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:04:27,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:04:27,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:04:27,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:04:27,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:04:27,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:04:27,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:04:27,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (1/1) ... [2025-01-09 21:04:27,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:04:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:04:27,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:04:27,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 21:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-09 21:04:27,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 21:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:04:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:04:27,814 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:04:27,920 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:04:27,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:04:28,209 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:04:28,209 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:04:28,318 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:04:28,318 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-01-09 21:04:28,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:04:28 BoogieIcfgContainer [2025-01-09 21:04:28,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:04:28,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:04:28,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:04:28,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:04:28,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:04:27" (1/3) ... [2025-01-09 21:04:28,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:04:28, skipping insertion in model container [2025-01-09 21:04:28,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:04:27" (2/3) ... [2025-01-09 21:04:28,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:04:28, skipping insertion in model container [2025-01-09 21:04:28,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:04:28" (3/3) ... [2025-01-09 21:04:28,324 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-01-09 21:04:28,334 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:04:28,335 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. [2025-01-09 21:04:28,335 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:04:28,421 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:04:28,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 158 transitions, 320 flow [2025-01-09 21:04:28,502 INFO L124 PetriNetUnfolderBase]: 13/165 cut-off events. [2025-01-09 21:04:28,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:04:28,507 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 6. Compared 309 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. [2025-01-09 21:04:28,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 158 transitions, 320 flow [2025-01-09 21:04:28,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 158 transitions, 320 flow [2025-01-09 21:04:28,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:04:28,523 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;@505bcfc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:04:28,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-01-09 21:04:28,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:04:28,529 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-01-09 21:04:28,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:04:28,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:28,530 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] [2025-01-09 21:04:28,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:04:28,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1629334749, now seen corresponding path program 1 times [2025-01-09 21:04:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:28,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117562771] [2025-01-09 21:04:28,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:28,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:04:28,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:04:28,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:28,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117562771] [2025-01-09 21:04:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117562771] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:28,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:28,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:04:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878010309] [2025-01-09 21:04:28,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:28,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:04:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:28,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:04:28,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:04:28,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2025-01-09 21:04:28,683 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) [2025-01-09 21:04:28,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:28,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2025-01-09 21:04:28,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:28,757 INFO L124 PetriNetUnfolderBase]: 4/129 cut-off events. [2025-01-09 21:04:28,758 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 21:04:28,758 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 114 event pairs, 0 based on Foata normal form. 15/133 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2025-01-09 21:04:28,759 INFO L140 encePairwiseOnDemand]: 136/158 looper letters, 7 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-01-09 21:04:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 270 flow [2025-01-09 21:04:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:04:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:04:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2025-01-09 21:04:28,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8892405063291139 [2025-01-09 21:04:28,770 INFO L175 Difference]: Start difference. First operand has 148 places, 158 transitions, 320 flow. Second operand 2 states and 281 transitions. [2025-01-09 21:04:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 270 flow [2025-01-09 21:04:28,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:28,775 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 256 flow [2025-01-09 21:04:28,777 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} [2025-01-09 21:04:28,779 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -22 predicate places. [2025-01-09 21:04:28,779 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 256 flow [2025-01-09 21:04:28,779 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) [2025-01-09 21:04:28,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:28,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:04:28,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:04:28,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:04:28,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1872347040, now seen corresponding path program 1 times [2025-01-09 21:04:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:28,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704941539] [2025-01-09 21:04:28,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:28,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 21:04:28,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 21:04:28,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:28,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704941539] [2025-01-09 21:04:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704941539] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:04:28,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036386674] [2025-01-09 21:04:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:28,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:04:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:28,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:04:28,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:04:28,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 158 [2025-01-09 21:04:28,857 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) [2025-01-09 21:04:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 158 [2025-01-09 21:04:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:28,897 INFO L124 PetriNetUnfolderBase]: 4/128 cut-off events. [2025-01-09 21:04:28,897 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 21:04:28,898 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 112 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. [2025-01-09 21:04:28,898 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 8 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2025-01-09 21:04:28,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 274 flow [2025-01-09 21:04:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:04:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:04:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2025-01-09 21:04:28,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7953586497890295 [2025-01-09 21:04:28,901 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 256 flow. Second operand 3 states and 377 transitions. [2025-01-09 21:04:28,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 274 flow [2025-01-09 21:04:28,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:28,906 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 258 flow [2025-01-09 21:04:28,906 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} [2025-01-09 21:04:28,908 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -21 predicate places. [2025-01-09 21:04:28,908 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 258 flow [2025-01-09 21:04:28,908 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) [2025-01-09 21:04:28,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:28,908 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] [2025-01-09 21:04:28,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:04:28,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:04:28,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 788600965, now seen corresponding path program 1 times [2025-01-09 21:04:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128179675] [2025-01-09 21:04:28,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:28,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 21:04:28,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 21:04:28,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:28,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:28,930 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:04:28,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 21:04:28,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 21:04:28,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:28,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:28,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:04:28,954 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:04:28,955 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-01-09 21:04:28,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-01-09 21:04:28,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-01-09 21:04:28,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-01-09 21:04:28,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-01-09 21:04:28,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:04:28,962 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-09 21:04:28,964 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:04:28,964 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-09 21:04:29,032 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:04:29,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 292 transitions, 594 flow [2025-01-09 21:04:29,103 INFO L124 PetriNetUnfolderBase]: 26/308 cut-off events. [2025-01-09 21:04:29,104 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 21:04:29,106 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 12. Compared 1112 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. [2025-01-09 21:04:29,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 292 transitions, 594 flow [2025-01-09 21:04:29,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 292 transitions, 594 flow [2025-01-09 21:04:29,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:04:29,110 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;@505bcfc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:04:29,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2025-01-09 21:04:29,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:04:29,113 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-01-09 21:04:29,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:04:29,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:29,113 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] [2025-01-09 21:04:29,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-01-09 21:04:29,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash 250641858, now seen corresponding path program 1 times [2025-01-09 21:04:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150957499] [2025-01-09 21:04:29,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:29,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:04:29,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:04:29,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:29,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150957499] [2025-01-09 21:04:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150957499] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:04:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410511436] [2025-01-09 21:04:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:04:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:29,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:04:29,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:04:29,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 292 [2025-01-09 21:04:29,132 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) [2025-01-09 21:04:29,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:29,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 292 [2025-01-09 21:04:29,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:29,277 INFO L124 PetriNetUnfolderBase]: 78/1010 cut-off events. [2025-01-09 21:04:29,278 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-01-09 21:04:29,281 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 6338 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. [2025-01-09 21:04:29,284 INFO L140 encePairwiseOnDemand]: 249/292 looper letters, 14 selfloop transitions, 0 changer transitions 0/232 dead transitions. [2025-01-09 21:04:29,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 232 transitions, 502 flow [2025-01-09 21:04:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:04:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:04:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 515 transitions. [2025-01-09 21:04:29,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8818493150684932 [2025-01-09 21:04:29,286 INFO L175 Difference]: Start difference. First operand has 271 places, 292 transitions, 594 flow. Second operand 2 states and 515 transitions. [2025-01-09 21:04:29,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 232 transitions, 502 flow [2025-01-09 21:04:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 232 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:29,289 INFO L231 Difference]: Finished difference. Result has 230 places, 232 transitions, 474 flow [2025-01-09 21:04:29,290 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} [2025-01-09 21:04:29,290 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -41 predicate places. [2025-01-09 21:04:29,290 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 232 transitions, 474 flow [2025-01-09 21:04:29,290 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) [2025-01-09 21:04:29,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:29,291 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:04:29,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:04:29,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-01-09 21:04:29,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 348692773, now seen corresponding path program 1 times [2025-01-09 21:04:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:29,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805048908] [2025-01-09 21:04:29,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:29,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 21:04:29,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 21:04:29,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:29,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805048908] [2025-01-09 21:04:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805048908] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:04:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398811763] [2025-01-09 21:04:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:04:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:29,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:04:29,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:04:29,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 292 [2025-01-09 21:04:29,329 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) [2025-01-09 21:04:29,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:29,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 292 [2025-01-09 21:04:29,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:29,588 INFO L124 PetriNetUnfolderBase]: 179/1809 cut-off events. [2025-01-09 21:04:29,589 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-01-09 21:04:29,594 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 13978 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. [2025-01-09 21:04:29,599 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 35 selfloop transitions, 6 changer transitions 0/251 dead transitions. [2025-01-09 21:04:29,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 251 transitions, 599 flow [2025-01-09 21:04:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:04:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:04:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2025-01-09 21:04:29,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8059360730593608 [2025-01-09 21:04:29,602 INFO L175 Difference]: Start difference. First operand has 230 places, 232 transitions, 474 flow. Second operand 3 states and 706 transitions. [2025-01-09 21:04:29,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 251 transitions, 599 flow [2025-01-09 21:04:29,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 251 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:29,606 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 526 flow [2025-01-09 21:04:29,607 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} [2025-01-09 21:04:29,607 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -37 predicate places. [2025-01-09 21:04:29,607 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 526 flow [2025-01-09 21:04:29,608 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) [2025-01-09 21:04:29,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:29,608 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] [2025-01-09 21:04:29,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 21:04:29,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-01-09 21:04:29,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash -432165505, now seen corresponding path program 1 times [2025-01-09 21:04:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:29,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164107136] [2025-01-09 21:04:29,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:29,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:29,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 21:04:29,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 21:04:29,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:29,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:29,619 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:04:29,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 21:04:29,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 21:04:29,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:29,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:29,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:04:29,627 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:04:29,627 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2025-01-09 21:04:29,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2025-01-09 21:04:29,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2025-01-09 21:04:29,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2025-01-09 21:04:29,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2025-01-09 21:04:29,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2025-01-09 21:04:29,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2025-01-09 21:04:29,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2025-01-09 21:04:29,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 21:04:29,630 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-09 21:04:29,630 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:04:29,630 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-09 21:04:29,707 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:04:29,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 426 transitions, 870 flow [2025-01-09 21:04:29,781 INFO L124 PetriNetUnfolderBase]: 39/451 cut-off events. [2025-01-09 21:04:29,781 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 21:04:29,787 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 16. Compared 2033 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. [2025-01-09 21:04:29,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 426 transitions, 870 flow [2025-01-09 21:04:29,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 426 transitions, 870 flow [2025-01-09 21:04:29,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:04:29,795 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;@505bcfc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:04:29,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2025-01-09 21:04:29,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:04:29,798 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-01-09 21:04:29,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:04:29,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:29,798 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] [2025-01-09 21:04:29,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-01-09 21:04:29,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1533965703, now seen corresponding path program 1 times [2025-01-09 21:04:29,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:29,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48197261] [2025-01-09 21:04:29,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:29,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:29,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:04:29,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:04:29,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:29,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:29,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48197261] [2025-01-09 21:04:29,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48197261] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:29,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:29,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:04:29,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812687837] [2025-01-09 21:04:29,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:29,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:04:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:29,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:04:29,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:04:29,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 426 [2025-01-09 21:04:29,825 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) [2025-01-09 21:04:29,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:29,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 426 [2025-01-09 21:04:29,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:30,750 INFO L124 PetriNetUnfolderBase]: 894/7533 cut-off events. [2025-01-09 21:04:30,750 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2025-01-09 21:04:30,778 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 83937 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. [2025-01-09 21:04:30,803 INFO L140 encePairwiseOnDemand]: 362/426 looper letters, 21 selfloop transitions, 0 changer transitions 0/338 dead transitions. [2025-01-09 21:04:30,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 338 transitions, 736 flow [2025-01-09 21:04:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:04:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:04:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2025-01-09 21:04:30,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8791079812206573 [2025-01-09 21:04:30,805 INFO L175 Difference]: Start difference. First operand has 394 places, 426 transitions, 870 flow. Second operand 2 states and 749 transitions. [2025-01-09 21:04:30,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 338 transitions, 736 flow [2025-01-09 21:04:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 338 transitions, 734 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:30,810 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 692 flow [2025-01-09 21:04:30,810 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} [2025-01-09 21:04:30,811 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -60 predicate places. [2025-01-09 21:04:30,811 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 692 flow [2025-01-09 21:04:30,811 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) [2025-01-09 21:04:30,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:30,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:04:30,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 21:04:30,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-01-09 21:04:30,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 967307498, now seen corresponding path program 1 times [2025-01-09 21:04:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:30,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226967640] [2025-01-09 21:04:30,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:30,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 21:04:30,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 21:04:30,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:30,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226967640] [2025-01-09 21:04:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226967640] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:30,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:04:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270053343] [2025-01-09 21:04:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:30,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:04:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:30,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:04:30,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:04:30,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 426 [2025-01-09 21:04:30,860 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) [2025-01-09 21:04:30,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:30,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 426 [2025-01-09 21:04:30,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:33,055 INFO L124 PetriNetUnfolderBase]: 3978/24874 cut-off events. [2025-01-09 21:04:33,055 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2025-01-09 21:04:33,159 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 338959 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. [2025-01-09 21:04:33,235 INFO L140 encePairwiseOnDemand]: 414/426 looper letters, 53 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2025-01-09 21:04:33,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 367 transitions, 884 flow [2025-01-09 21:04:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:04:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:04:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2025-01-09 21:04:33,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8020344287949922 [2025-01-09 21:04:33,239 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 692 flow. Second operand 3 states and 1025 transitions. [2025-01-09 21:04:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 367 transitions, 884 flow [2025-01-09 21:04:33,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 367 transitions, 884 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:33,243 INFO L231 Difference]: Finished difference. Result has 338 places, 347 transitions, 770 flow [2025-01-09 21:04:33,244 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} [2025-01-09 21:04:33,244 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -56 predicate places. [2025-01-09 21:04:33,244 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 347 transitions, 770 flow [2025-01-09 21:04:33,245 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) [2025-01-09 21:04:33,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:33,245 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] [2025-01-09 21:04:33,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 21:04:33,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-01-09 21:04:33,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1960900389, now seen corresponding path program 1 times [2025-01-09 21:04:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853603090] [2025-01-09 21:04:33,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:33,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 21:04:33,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 21:04:33,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:33,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:33,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853603090] [2025-01-09 21:04:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853603090] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:33,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:04:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829377099] [2025-01-09 21:04:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:33,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:04:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:33,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:04:33,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:04:33,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 426 [2025-01-09 21:04:33,716 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) [2025-01-09 21:04:33,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:33,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 426 [2025-01-09 21:04:33,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:42,853 INFO L124 PetriNetUnfolderBase]: 26035/96970 cut-off events. [2025-01-09 21:04:42,853 INFO L125 PetriNetUnfolderBase]: For 2551/2556 co-relation queries the response was YES. [2025-01-09 21:04:43,295 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 1407585 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. [2025-01-09 21:04:43,667 INFO L140 encePairwiseOnDemand]: 395/426 looper letters, 111 selfloop transitions, 94 changer transitions 0/498 dead transitions. [2025-01-09 21:04:43,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 498 transitions, 1522 flow [2025-01-09 21:04:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:04:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:04:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2000 transitions. [2025-01-09 21:04:43,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7824726134585289 [2025-01-09 21:04:43,671 INFO L175 Difference]: Start difference. First operand has 338 places, 347 transitions, 770 flow. Second operand 6 states and 2000 transitions. [2025-01-09 21:04:43,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 498 transitions, 1522 flow [2025-01-09 21:04:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 498 transitions, 1504 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 21:04:43,692 INFO L231 Difference]: Finished difference. Result has 345 places, 444 transitions, 1324 flow [2025-01-09 21:04:43,692 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} [2025-01-09 21:04:43,693 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -49 predicate places. [2025-01-09 21:04:43,693 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 444 transitions, 1324 flow [2025-01-09 21:04:43,694 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) [2025-01-09 21:04:43,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:43,694 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] [2025-01-09 21:04:43,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 21:04:43,694 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-01-09 21:04:43,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -958587772, now seen corresponding path program 1 times [2025-01-09 21:04:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848735299] [2025-01-09 21:04:43,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:43,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 21:04:43,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 21:04:43,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:43,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:43,705 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:04:43,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 21:04:43,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 21:04:43,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:43,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:04:43,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:04:43,717 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:04:43,717 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2025-01-09 21:04:43,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2025-01-09 21:04:43,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2025-01-09 21:04:43,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2025-01-09 21:04:43,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2025-01-09 21:04:43,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2025-01-09 21:04:43,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2025-01-09 21:04:43,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2025-01-09 21:04:43,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2025-01-09 21:04:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2025-01-09 21:04:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2025-01-09 21:04:43,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2025-01-09 21:04:43,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 21:04:43,725 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-09 21:04:43,725 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:04:43,725 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-01-09 21:04:43,849 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:04:43,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 517 places, 560 transitions, 1148 flow [2025-01-09 21:04:43,956 INFO L124 PetriNetUnfolderBase]: 52/594 cut-off events. [2025-01-09 21:04:43,956 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 21:04:43,965 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 3003 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. [2025-01-09 21:04:43,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 560 transitions, 1148 flow [2025-01-09 21:04:43,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 560 transitions, 1148 flow [2025-01-09 21:04:43,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:04:43,976 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;@505bcfc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:04:43,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2025-01-09 21:04:43,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:04:43,978 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-01-09 21:04:43,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:04:43,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:43,978 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] [2025-01-09 21:04:43,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-01-09 21:04:43,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1184347500, now seen corresponding path program 1 times [2025-01-09 21:04:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535874329] [2025-01-09 21:04:43,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:43,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:04:43,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:04:43,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:43,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535874329] [2025-01-09 21:04:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535874329] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:43,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:04:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206158487] [2025-01-09 21:04:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:43,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:04:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:43,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:04:43,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:04:44,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 560 [2025-01-09 21:04:44,001 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) [2025-01-09 21:04:44,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:44,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 560 [2025-01-09 21:04:44,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:04:51,167 INFO L124 PetriNetUnfolderBase]: 8668/55314 cut-off events. [2025-01-09 21:04:51,167 INFO L125 PetriNetUnfolderBase]: For 3752/3752 co-relation queries the response was YES. [2025-01-09 21:04:51,711 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 854214 event pairs, 6804 based on Foata normal form. 12263/61710 useless extension candidates. Maximal degree in co-relation 55673. Up to 9605 conditions per place. [2025-01-09 21:04:51,928 INFO L140 encePairwiseOnDemand]: 475/560 looper letters, 28 selfloop transitions, 0 changer transitions 0/444 dead transitions. [2025-01-09 21:04:51,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 444 transitions, 972 flow [2025-01-09 21:04:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:04:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:04:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 983 transitions. [2025-01-09 21:04:51,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8776785714285714 [2025-01-09 21:04:51,934 INFO L175 Difference]: Start difference. First operand has 517 places, 560 transitions, 1148 flow. Second operand 2 states and 983 transitions. [2025-01-09 21:04:51,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 444 transitions, 972 flow [2025-01-09 21:04:51,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 444 transitions, 966 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-01-09 21:04:51,943 INFO L231 Difference]: Finished difference. Result has 438 places, 444 transitions, 910 flow [2025-01-09 21:04:51,944 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} [2025-01-09 21:04:51,944 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -79 predicate places. [2025-01-09 21:04:51,944 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 444 transitions, 910 flow [2025-01-09 21:04:51,951 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) [2025-01-09 21:04:51,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:04:51,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:04:51,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 21:04:51,951 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-01-09 21:04:51,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:04:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash -8314321, now seen corresponding path program 1 times [2025-01-09 21:04:51,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:04:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-01-09 21:04:51,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:04:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:04:51,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 21:04:51,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 21:04:51,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:04:51,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:04:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:04:51,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:04:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-01-09 21:04:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382639] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:04:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:04:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:04:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834810790] [2025-01-09 21:04:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:04:51,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:04:51,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:04:51,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:04:51,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:04:52,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 560 [2025-01-09 21:04:52,010 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) [2025-01-09 21:04:52,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:04:52,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 560 [2025-01-09 21:04:52,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand