./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.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-divine/one_time_barrier_twice_2t.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 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:20:36,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:20:36,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:20:36,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:20:36,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:20:36,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:20:36,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:20:36,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:20:36,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:20:36,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:20:36,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:20:36,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:20:36,890 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:20:36,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:20:36,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:20:36,891 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:36,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:36,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:36,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:20:36,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:20:36,892 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 -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2025-01-09 21:20:37,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:20:37,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:20:37,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:20:37,113 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:20:37,113 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:20:37,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2025-01-09 21:20:38,260 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c523305cc/212f6909ec334e13894b6839e873b450/FLAGf4da2d3e6 [2025-01-09 21:20:38,543 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:20:38,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2025-01-09 21:20:38,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c523305cc/212f6909ec334e13894b6839e873b450/FLAGf4da2d3e6 [2025-01-09 21:20:38,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c523305cc/212f6909ec334e13894b6839e873b450 [2025-01-09 21:20:38,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:20:38,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:20:38,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:38,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:20:38,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:20:38,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:38" (1/1) ... [2025-01-09 21:20:38,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36afc31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:38, skipping insertion in model container [2025-01-09 21:20:38,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:38" (1/1) ... [2025-01-09 21:20:38,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:20:39,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:39,115 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:20:39,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:39,186 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:20:39,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39 WrapperNode [2025-01-09 21:20:39,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:39,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:39,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:20:39,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:20:39,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,250 INFO L138 Inliner]: procedures = 174, calls = 89, calls flagged for inlining = 21, calls inlined = 37, statements flattened = 867 [2025-01-09 21:20:39,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:39,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:20:39,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:20:39,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:20:39,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,293 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:20:39,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:20:39,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:20:39,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:20:39,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (1/1) ... [2025-01-09 21:20:39,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:20:39,352 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 21:20:39,354 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 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-01-09 21:20:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-01-09 21:20:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:20:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-01-09 21:20:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:20:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:20:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 21:20:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:20:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:20:39,374 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 21:20:39,517 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:20:39,518 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:20:40,571 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:20:40,572 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:20:40,615 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:20:40,615 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-01-09 21:20:40,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:40 BoogieIcfgContainer [2025-01-09 21:20:40,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:20:40,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:20:40,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:20:40,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:20:40,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:20:38" (1/3) ... [2025-01-09 21:20:40,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d10151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:40, skipping insertion in model container [2025-01-09 21:20:40,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:39" (2/3) ... [2025-01-09 21:20:40,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d10151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:40, skipping insertion in model container [2025-01-09 21:20:40,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:40" (3/3) ... [2025-01-09 21:20:40,630 INFO L128 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2025-01-09 21:20:40,643 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:20:40,645 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG one_time_barrier_twice_2t.i that has 2 procedures, 973 locations, 1 initial locations, 16 loop locations, and 79 error locations. [2025-01-09 21:20:40,645 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:20:40,798 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-09 21:20:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 976 places, 1052 transitions, 2111 flow [2025-01-09 21:20:41,295 INFO L124 PetriNetUnfolderBase]: 118/1545 cut-off events. [2025-01-09 21:20:41,298 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 21:20:41,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1545 events. 118/1545 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 5633 event pairs, 0 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 915. Up to 4 conditions per place. [2025-01-09 21:20:41,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 976 places, 1052 transitions, 2111 flow [2025-01-09 21:20:41,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 976 places, 1052 transitions, 2111 flow [2025-01-09 21:20:41,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:20:41,370 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;@4df2cdee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:20:41,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2025-01-09 21:20:41,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:20:41,377 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2025-01-09 21:20:41,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:20:41,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:41,378 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:20:41,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:20:41,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1180685238, now seen corresponding path program 1 times [2025-01-09 21:20:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442578000] [2025-01-09 21:20:41,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:41,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 21:20:41,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 21:20:41,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:41,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:42,189 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 21:20:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442578000] [2025-01-09 21:20:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442578000] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:42,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233325017] [2025-01-09 21:20:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:42,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:42,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:42,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:43,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1052 [2025-01-09 21:20:43,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 1052 transitions, 2111 flow. Second operand has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:20:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:43,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1052 [2025-01-09 21:20:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:52,077 INFO L124 PetriNetUnfolderBase]: 12703/59329 cut-off events. [2025-01-09 21:20:52,083 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-01-09 21:20:52,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82746 conditions, 59329 events. 12703/59329 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 691350 event pairs, 11413 based on Foata normal form. 5919/58137 useless extension candidates. Maximal degree in co-relation 82018. Up to 23407 conditions per place. [2025-01-09 21:20:52,359 INFO L140 encePairwiseOnDemand]: 986/1052 looper letters, 239 selfloop transitions, 5 changer transitions 6/963 dead transitions. [2025-01-09 21:20:52,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 963 transitions, 2421 flow [2025-01-09 21:20:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:20:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:20:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4787 transitions. [2025-01-09 21:20:52,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7583967046894804 [2025-01-09 21:20:52,385 INFO L175 Difference]: Start difference. First operand has 976 places, 1052 transitions, 2111 flow. Second operand 6 states and 4787 transitions. [2025-01-09 21:20:52,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 963 transitions, 2421 flow [2025-01-09 21:20:52,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 963 transitions, 2421 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:20:52,411 INFO L231 Difference]: Finished difference. Result has 952 places, 957 transitions, 1931 flow [2025-01-09 21:20:52,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1931, PETRI_PLACES=952, PETRI_TRANSITIONS=957} [2025-01-09 21:20:52,417 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -24 predicate places. [2025-01-09 21:20:52,420 INFO L471 AbstractCegarLoop]: Abstraction has has 952 places, 957 transitions, 1931 flow [2025-01-09 21:20:52,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:20:52,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:52,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:20:52,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:20:52,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:20:52,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash -618335239, now seen corresponding path program 1 times [2025-01-09 21:20:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185377673] [2025-01-09 21:20:52,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:52,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-09 21:20:52,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 21:20:52,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:52,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:52,535 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 21:20:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185377673] [2025-01-09 21:20:52,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185377673] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:52,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:52,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 21:20:52,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186706280] [2025-01-09 21:20:52,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:52,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:20:52,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:52,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:20:52,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:20:52,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 964 out of 1052 [2025-01-09 21:20:52,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 957 transitions, 1931 flow. Second operand has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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 21:20:52,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:52,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 964 of 1052 [2025-01-09 21:20:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:53,769 INFO L124 PetriNetUnfolderBase]: 247/4823 cut-off events. [2025-01-09 21:20:53,770 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:20:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 4823 events. 247/4823 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36210 event pairs, 110 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 5062. Up to 306 conditions per place. [2025-01-09 21:20:53,808 INFO L140 encePairwiseOnDemand]: 1049/1052 looper letters, 27 selfloop transitions, 2 changer transitions 0/958 dead transitions. [2025-01-09 21:20:53,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 958 transitions, 1991 flow [2025-01-09 21:20:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:20:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:20:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2922 transitions. [2025-01-09 21:20:53,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9258555133079848 [2025-01-09 21:20:53,813 INFO L175 Difference]: Start difference. First operand has 952 places, 957 transitions, 1931 flow. Second operand 3 states and 2922 transitions. [2025-01-09 21:20:53,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 958 transitions, 1991 flow [2025-01-09 21:20:53,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 958 transitions, 1981 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:20:53,826 INFO L231 Difference]: Finished difference. Result has 944 places, 958 transitions, 1933 flow [2025-01-09 21:20:53,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1933, PETRI_PLACES=944, PETRI_TRANSITIONS=958} [2025-01-09 21:20:53,828 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -32 predicate places. [2025-01-09 21:20:53,829 INFO L471 AbstractCegarLoop]: Abstraction has has 944 places, 958 transitions, 1933 flow [2025-01-09 21:20:53,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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 21:20:53,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:53,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:20:53,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:20:53,831 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:20:53,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1926091116, now seen corresponding path program 1 times [2025-01-09 21:20:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987185740] [2025-01-09 21:20:53,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:53,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-09 21:20:53,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-09 21:20:53,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:53,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:54,104 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 21:20:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987185740] [2025-01-09 21:20:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987185740] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:54,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:54,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531080692] [2025-01-09 21:20:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:54,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:54,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:54,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:55,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1052 [2025-01-09 21:20:55,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 958 transitions, 1933 flow. Second operand has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:20:55,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:55,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1052 [2025-01-09 21:20:55,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:03,881 INFO L124 PetriNetUnfolderBase]: 12703/59350 cut-off events. [2025-01-09 21:21:03,882 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-01-09 21:21:03,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82782 conditions, 59350 events. 12703/59350 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 691137 event pairs, 11413 based on Foata normal form. 0/52242 useless extension candidates. Maximal degree in co-relation 82703. Up to 23410 conditions per place. [2025-01-09 21:21:04,121 INFO L140 encePairwiseOnDemand]: 1046/1052 looper letters, 240 selfloop transitions, 5 changer transitions 0/957 dead transitions. [2025-01-09 21:21:04,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 957 transitions, 2421 flow [2025-01-09 21:21:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:21:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:21:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4727 transitions. [2025-01-09 21:21:04,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7488910012674271 [2025-01-09 21:21:04,140 INFO L175 Difference]: Start difference. First operand has 944 places, 958 transitions, 1933 flow. Second operand 6 states and 4727 transitions. [2025-01-09 21:21:04,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 957 transitions, 2421 flow [2025-01-09 21:21:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 957 transitions, 2419 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 21:21:04,156 INFO L231 Difference]: Finished difference. Result has 947 places, 957 transitions, 1939 flow [2025-01-09 21:21:04,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=952, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1939, PETRI_PLACES=947, PETRI_TRANSITIONS=957} [2025-01-09 21:21:04,158 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -29 predicate places. [2025-01-09 21:21:04,158 INFO L471 AbstractCegarLoop]: Abstraction has has 947 places, 957 transitions, 1939 flow [2025-01-09 21:21:04,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:21:04,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:04,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:21:04,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:21:04,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:21:04,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1258334033, now seen corresponding path program 1 times [2025-01-09 21:21:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39376870] [2025-01-09 21:21:04,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:04,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 21:21:04,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 21:21:04,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:04,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:04,526 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 21:21:04,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39376870] [2025-01-09 21:21:04,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39376870] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:21:04,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:21:04,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:21:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190367111] [2025-01-09 21:21:04,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:21:04,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:04,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:04,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:05,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1052 [2025-01-09 21:21:05,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 947 places, 957 transitions, 1939 flow. Second operand has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:21:05,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:05,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1052 [2025-01-09 21:21:05,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:14,109 INFO L124 PetriNetUnfolderBase]: 12703/59348 cut-off events. [2025-01-09 21:21:14,110 INFO L125 PetriNetUnfolderBase]: For 6/9 co-relation queries the response was YES. [2025-01-09 21:21:14,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82789 conditions, 59348 events. 12703/59348 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 691550 event pairs, 11413 based on Foata normal form. 0/52242 useless extension candidates. Maximal degree in co-relation 82696. Up to 23410 conditions per place. [2025-01-09 21:21:14,314 INFO L140 encePairwiseOnDemand]: 1046/1052 looper letters, 240 selfloop transitions, 5 changer transitions 0/956 dead transitions. [2025-01-09 21:21:14,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 956 transitions, 2427 flow [2025-01-09 21:21:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:21:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:21:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4727 transitions. [2025-01-09 21:21:14,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7488910012674271 [2025-01-09 21:21:14,330 INFO L175 Difference]: Start difference. First operand has 947 places, 957 transitions, 1939 flow. Second operand 6 states and 4727 transitions. [2025-01-09 21:21:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 951 places, 956 transitions, 2427 flow [2025-01-09 21:21:14,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 956 transitions, 2417 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:21:14,344 INFO L231 Difference]: Finished difference. Result has 946 places, 956 transitions, 1937 flow [2025-01-09 21:21:14,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=951, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1937, PETRI_PLACES=946, PETRI_TRANSITIONS=956} [2025-01-09 21:21:14,346 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -30 predicate places. [2025-01-09 21:21:14,346 INFO L471 AbstractCegarLoop]: Abstraction has has 946 places, 956 transitions, 1937 flow [2025-01-09 21:21:14,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 21:21:14,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:14,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:21:14,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:21:14,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:21:14,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1602993543, now seen corresponding path program 1 times [2025-01-09 21:21:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:14,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259392959] [2025-01-09 21:21:14,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:14,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-09 21:21:14,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 21:21:14,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:14,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:21:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259392959] [2025-01-09 21:21:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259392959] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:21:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387359968] [2025-01-09 21:21:14,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:14,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:21:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:21:14,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:21:14,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 21:21:14,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-09 21:21:14,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 21:21:14,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:14,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:14,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 21:21:14,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:21:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:21:14,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:21:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:21:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387359968] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:21:14,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 21:21:14,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-01-09 21:21:14,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405556943] [2025-01-09 21:21:14,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 21:21:14,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 21:21:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:14,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 21:21:14,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 21:21:14,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 1052 [2025-01-09 21:21:14,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 956 transitions, 1937 flow. Second operand has 5 states, 5 states have (on average 964.8) internal successors, (4824), 5 states have internal predecessors, (4824), 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 21:21:14,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:14,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 1052 [2025-01-09 21:21:14,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:15,525 INFO L124 PetriNetUnfolderBase]: 247/4821 cut-off events. [2025-01-09 21:21:15,525 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-01-09 21:21:15,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5152 conditions, 4821 events. 247/4821 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36216 event pairs, 110 based on Foata normal form. 1/4164 useless extension candidates. Maximal degree in co-relation 5045. Up to 305 conditions per place. [2025-01-09 21:21:15,553 INFO L140 encePairwiseOnDemand]: 1048/1052 looper letters, 28 selfloop transitions, 4 changer transitions 0/958 dead transitions. [2025-01-09 21:21:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 949 places, 958 transitions, 2005 flow [2025-01-09 21:21:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 21:21:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 21:21:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3885 transitions. [2025-01-09 21:21:15,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9232414448669202 [2025-01-09 21:21:15,559 INFO L175 Difference]: Start difference. First operand has 946 places, 956 transitions, 1937 flow. Second operand 4 states and 3885 transitions. [2025-01-09 21:21:15,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 949 places, 958 transitions, 2005 flow [2025-01-09 21:21:15,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 944 places, 958 transitions, 1995 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:21:15,569 INFO L231 Difference]: Finished difference. Result has 946 places, 957 transitions, 1947 flow [2025-01-09 21:21:15,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=952, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1947, PETRI_PLACES=946, PETRI_TRANSITIONS=957} [2025-01-09 21:21:15,571 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -30 predicate places. [2025-01-09 21:21:15,571 INFO L471 AbstractCegarLoop]: Abstraction has has 946 places, 957 transitions, 1947 flow [2025-01-09 21:21:15,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 964.8) internal successors, (4824), 5 states have internal predecessors, (4824), 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 21:21:15,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:15,573 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:21:15,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 21:21:15,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:21:15,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:21:15,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1817459179, now seen corresponding path program 2 times [2025-01-09 21:21:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139826813] [2025-01-09 21:21:15,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 21:21:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:15,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-01-09 21:21:15,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 46 of 102 statements. [2025-01-09 21:21:15,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 21:21:15,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-01-09 21:21:16,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:16,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139826813] [2025-01-09 21:21:16,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139826813] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:21:16,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:21:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:21:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082760522] [2025-01-09 21:21:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:21:16,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:16,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:16,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:16,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:17,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 1052 [2025-01-09 21:21:17,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 957 transitions, 1947 flow. Second operand has 6 states, 6 states have (on average 747.3333333333334) internal successors, (4484), 6 states have internal predecessors, (4484), 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 21:21:17,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:17,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 1052 [2025-01-09 21:21:17,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:25,273 INFO L124 PetriNetUnfolderBase]: 12493/58890 cut-off events. [2025-01-09 21:21:25,273 INFO L125 PetriNetUnfolderBase]: For 13/16 co-relation queries the response was YES. [2025-01-09 21:21:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81932 conditions, 58890 events. 12493/58890 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 686655 event pairs, 11211 based on Foata normal form. 0/51846 useless extension candidates. Maximal degree in co-relation 81802. Up to 23010 conditions per place. [2025-01-09 21:21:25,516 INFO L140 encePairwiseOnDemand]: 1040/1052 looper letters, 236 selfloop transitions, 10 changer transitions 0/955 dead transitions. [2025-01-09 21:21:25,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 949 places, 955 transitions, 2435 flow [2025-01-09 21:21:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:21:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:21:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4712 transitions. [2025-01-09 21:21:25,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7465145754119138 [2025-01-09 21:21:25,523 INFO L175 Difference]: Start difference. First operand has 946 places, 957 transitions, 1947 flow. Second operand 6 states and 4712 transitions. [2025-01-09 21:21:25,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 949 places, 955 transitions, 2435 flow [2025-01-09 21:21:25,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 948 places, 955 transitions, 2431 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 21:21:25,537 INFO L231 Difference]: Finished difference. Result has 948 places, 955 transitions, 1959 flow [2025-01-09 21:21:25,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1959, PETRI_PLACES=948, PETRI_TRANSITIONS=955} [2025-01-09 21:21:25,540 INFO L279 CegarLoopForPetriNet]: 976 programPoint places, -28 predicate places. [2025-01-09 21:21:25,541 INFO L471 AbstractCegarLoop]: Abstraction has has 948 places, 955 transitions, 1959 flow [2025-01-09 21:21:25,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 747.3333333333334) internal successors, (4484), 6 states have internal predecessors, (4484), 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 21:21:25,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:25,543 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:21:25,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 21:21:25,543 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 111 more)] === [2025-01-09 21:21:25,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash 447722836, now seen corresponding path program 1 times [2025-01-09 21:21:25,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:25,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405332084] [2025-01-09 21:21:25,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:25,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-01-09 21:21:25,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 21:21:25,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:25,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-09 21:21:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405332084] [2025-01-09 21:21:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405332084] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:21:26,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:21:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:21:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105575153] [2025-01-09 21:21:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:21:26,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:26,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:26,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:27,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 1052 [2025-01-09 21:21:27,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 948 places, 955 transitions, 1959 flow. Second operand has 6 states, 6 states have (on average 747.3333333333334) internal successors, (4484), 6 states have internal predecessors, (4484), 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 21:21:27,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:27,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 1052 [2025-01-09 21:21:27,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand