./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.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_3t.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 f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:20:43,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:20:43,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:20:43,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:20:43,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:20:43,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:20:43,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:20:43,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:20:43,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:20:43,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:20:43,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:20:43,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:20:43,940 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:20:43,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:20:43,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:20:43,942 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:43,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:43,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:43,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:20:43,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:20:43,943 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 -> f7efed4227021db06f22a3abd4d1096de1449b086dcfb78e041156858b4360a4 [2025-01-09 21:20:44,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:20:44,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:20:44,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:20:44,142 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:20:44,143 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:20:44,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2025-01-09 21:20:45,284 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9a274e74/011baad14cfd4b08b9fcbbccdb87c1cb/FLAG2520ae05e [2025-01-09 21:20:45,584 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:20:45,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_3t.i [2025-01-09 21:20:45,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9a274e74/011baad14cfd4b08b9fcbbccdb87c1cb/FLAG2520ae05e [2025-01-09 21:20:45,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9a274e74/011baad14cfd4b08b9fcbbccdb87c1cb [2025-01-09 21:20:45,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:20:45,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:20:45,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:45,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:20:45,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:20:45,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:45,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8e7021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45, skipping insertion in model container [2025-01-09 21:20:45,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:45,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:20:45,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:45,908 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:20:45,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:45,994 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:20:45,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45 WrapperNode [2025-01-09 21:20:45,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:45,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:45,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:20:45,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:20:46,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,040 INFO L138 Inliner]: procedures = 174, calls = 94, calls flagged for inlining = 21, calls inlined = 37, statements flattened = 872 [2025-01-09 21:20:46,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:46,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:20:46,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:20:46,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:20:46,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:20:46,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:20:46,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:20:46,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:20:46,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (1/1) ... [2025-01-09 21:20:46,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:46,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:20:46,119 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 21:20:46,127 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 21:20:46,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 21:20:46,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-01-09 21:20:46,146 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:20:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 21:20:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:20:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:20:46,148 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 21:20:46,284 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:20:46,286 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:20:47,190 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:20:47,191 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:20:47,224 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:20:47,224 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-01-09 21:20:47,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:47 BoogieIcfgContainer [2025-01-09 21:20:47,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:20:47,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:20:47,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:20:47,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:20:47,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:20:45" (1/3) ... [2025-01-09 21:20:47,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143f0312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:47, skipping insertion in model container [2025-01-09 21:20:47,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:45" (2/3) ... [2025-01-09 21:20:47,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143f0312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:47, skipping insertion in model container [2025-01-09 21:20:47,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:47" (3/3) ... [2025-01-09 21:20:47,231 INFO L128 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_3t.i [2025-01-09 21:20:47,239 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:20:47,240 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG one_time_barrier_twice_3t.i that has 2 procedures, 978 locations, 1 initial locations, 16 loop locations, and 79 error locations. [2025-01-09 21:20:47,241 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:20:47,380 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-09 21:20:47,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 981 places, 1057 transitions, 2121 flow [2025-01-09 21:20:47,802 INFO L124 PetriNetUnfolderBase]: 118/1550 cut-off events. [2025-01-09 21:20:47,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 21:20:47,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 1550 events. 118/1550 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 5624 event pairs, 0 based on Foata normal form. 0/1312 useless extension candidates. Maximal degree in co-relation 915. Up to 4 conditions per place. [2025-01-09 21:20:47,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 981 places, 1057 transitions, 2121 flow [2025-01-09 21:20:47,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 981 places, 1057 transitions, 2121 flow [2025-01-09 21:20:47,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:20:47,858 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;@2fd53a43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:20:47,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2025-01-09 21:20:47,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:20:47,863 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2025-01-09 21:20:47,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:20:47,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:47,864 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:20:47,864 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 21:20:47,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -536766534, now seen corresponding path program 1 times [2025-01-09 21:20:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085664223] [2025-01-09 21:20:47,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:47,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 21:20:47,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 21:20:47,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:47,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:48,591 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 21:20:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085664223] [2025-01-09 21:20:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085664223] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:48,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337640927] [2025-01-09 21:20:48,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:48,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:48,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:48,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:49,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 752 out of 1057 [2025-01-09 21:20:49,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 981 places, 1057 transitions, 2121 flow. Second operand has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:20:49,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:49,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 752 of 1057 [2025-01-09 21:20:49,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:58,025 INFO L124 PetriNetUnfolderBase]: 12703/59334 cut-off events. [2025-01-09 21:20:58,025 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2025-01-09 21:20:58,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82751 conditions, 59334 events. 12703/59334 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 691390 event pairs, 11413 based on Foata normal form. 5919/58142 useless extension candidates. Maximal degree in co-relation 82018. Up to 23407 conditions per place. [2025-01-09 21:20:58,245 INFO L140 encePairwiseOnDemand]: 991/1057 looper letters, 239 selfloop transitions, 5 changer transitions 6/968 dead transitions. [2025-01-09 21:20:58,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 968 transitions, 2431 flow [2025-01-09 21:20:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:20:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:20:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4817 transitions. [2025-01-09 21:20:58,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7595395774203721 [2025-01-09 21:20:58,272 INFO L175 Difference]: Start difference. First operand has 981 places, 1057 transitions, 2121 flow. Second operand 6 states and 4817 transitions. [2025-01-09 21:20:58,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 968 transitions, 2431 flow [2025-01-09 21:20:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 968 transitions, 2431 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:20:58,298 INFO L231 Difference]: Finished difference. Result has 957 places, 962 transitions, 1941 flow [2025-01-09 21:20:58,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1057, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=952, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1941, PETRI_PLACES=957, PETRI_TRANSITIONS=962} [2025-01-09 21:20:58,303 INFO L279 CegarLoopForPetriNet]: 981 programPoint places, -24 predicate places. [2025-01-09 21:20:58,305 INFO L471 AbstractCegarLoop]: Abstraction has has 957 places, 962 transitions, 1941 flow [2025-01-09 21:20:58,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:20:58,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:58,307 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] [2025-01-09 21:20:58,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:20:58,307 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 21:20:58,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash 50954357, now seen corresponding path program 1 times [2025-01-09 21:20:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:58,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800353904] [2025-01-09 21:20:58,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:58,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 21:20:58,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 21:20:58,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:58,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:58,373 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 21:20:58,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800353904] [2025-01-09 21:20:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800353904] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:58,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 21:20:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896904011] [2025-01-09 21:20:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:58,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:20:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:58,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:20:58,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:20:58,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 969 out of 1057 [2025-01-09 21:20:58,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 957 places, 962 transitions, 1941 flow. Second operand has 3 states, 3 states have (on average 970.3333333333334) internal successors, (2911), 3 states have internal predecessors, (2911), 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 21:20:58,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:58,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 969 of 1057 [2025-01-09 21:20:58,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:59,423 INFO L124 PetriNetUnfolderBase]: 247/4828 cut-off events. [2025-01-09 21:20:59,423 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:20:59,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 4828 events. 247/4828 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36258 event pairs, 110 based on Foata normal form. 1/4167 useless extension candidates. Maximal degree in co-relation 5062. Up to 306 conditions per place. [2025-01-09 21:20:59,442 INFO L140 encePairwiseOnDemand]: 1054/1057 looper letters, 27 selfloop transitions, 2 changer transitions 0/963 dead transitions. [2025-01-09 21:20:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 963 transitions, 2001 flow [2025-01-09 21:20:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:20:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:20:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2937 transitions. [2025-01-09 21:20:59,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9262062440870388 [2025-01-09 21:20:59,446 INFO L175 Difference]: Start difference. First operand has 957 places, 962 transitions, 1941 flow. Second operand 3 states and 2937 transitions. [2025-01-09 21:20:59,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 963 transitions, 2001 flow [2025-01-09 21:20:59,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 948 places, 963 transitions, 1991 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:20:59,461 INFO L231 Difference]: Finished difference. Result has 949 places, 963 transitions, 1943 flow [2025-01-09 21:20:59,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1057, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=960, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1943, PETRI_PLACES=949, PETRI_TRANSITIONS=963} [2025-01-09 21:20:59,462 INFO L279 CegarLoopForPetriNet]: 981 programPoint places, -32 predicate places. [2025-01-09 21:20:59,462 INFO L471 AbstractCegarLoop]: Abstraction has has 949 places, 963 transitions, 1943 flow [2025-01-09 21:20:59,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 970.3333333333334) internal successors, (2911), 3 states have internal predecessors, (2911), 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 21:20:59,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:59,464 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] [2025-01-09 21:20:59,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:20:59,464 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 21:20:59,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1666903994, now seen corresponding path program 1 times [2025-01-09 21:20:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:59,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562628021] [2025-01-09 21:20:59,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:59,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-01-09 21:20:59,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-01-09 21:20:59,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:59,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:59,701 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 21:20:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:59,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562628021] [2025-01-09 21:20:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562628021] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:59,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323377321] [2025-01-09 21:20:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:59,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:59,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:59,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:00,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 752 out of 1057 [2025-01-09 21:21:00,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 963 transitions, 1943 flow. Second operand has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:21:00,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:00,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 752 of 1057 [2025-01-09 21:21:00,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:08,739 INFO L124 PetriNetUnfolderBase]: 12703/59355 cut-off events. [2025-01-09 21:21:08,739 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-01-09 21:21:08,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82787 conditions, 59355 events. 12703/59355 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 691118 event pairs, 11413 based on Foata normal form. 0/52247 useless extension candidates. Maximal degree in co-relation 82703. Up to 23410 conditions per place. [2025-01-09 21:21:08,938 INFO L140 encePairwiseOnDemand]: 1051/1057 looper letters, 240 selfloop transitions, 5 changer transitions 0/962 dead transitions. [2025-01-09 21:21:08,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 962 transitions, 2431 flow [2025-01-09 21:21:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:21:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:21:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4757 transitions. [2025-01-09 21:21:08,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.750078839482813 [2025-01-09 21:21:08,946 INFO L175 Difference]: Start difference. First operand has 949 places, 963 transitions, 1943 flow. Second operand 6 states and 4757 transitions. [2025-01-09 21:21:08,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 962 transitions, 2431 flow [2025-01-09 21:21:08,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 962 transitions, 2429 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 21:21:08,959 INFO L231 Difference]: Finished difference. Result has 952 places, 962 transitions, 1949 flow [2025-01-09 21:21:08,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1057, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1949, PETRI_PLACES=952, PETRI_TRANSITIONS=962} [2025-01-09 21:21:08,962 INFO L279 CegarLoopForPetriNet]: 981 programPoint places, -29 predicate places. [2025-01-09 21:21:08,963 INFO L471 AbstractCegarLoop]: Abstraction has has 952 places, 962 transitions, 1949 flow [2025-01-09 21:21:08,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:21:08,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:08,965 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] [2025-01-09 21:21:08,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:21:08,965 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 21:21:08,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 170818455, now seen corresponding path program 1 times [2025-01-09 21:21:08,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:08,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28993143] [2025-01-09 21:21:08,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:08,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:08,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-09 21:21:08,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-09 21:21:08,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:08,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:21:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28993143] [2025-01-09 21:21:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28993143] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:21:09,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:21:09,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:21:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676880386] [2025-01-09 21:21:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:21:09,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:09,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:09,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:10,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 752 out of 1057 [2025-01-09 21:21:10,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 962 transitions, 1949 flow. Second operand has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:21:10,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:10,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 752 of 1057 [2025-01-09 21:21:10,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:19,314 INFO L124 PetriNetUnfolderBase]: 12703/59353 cut-off events. [2025-01-09 21:21:19,315 INFO L125 PetriNetUnfolderBase]: For 6/9 co-relation queries the response was YES. [2025-01-09 21:21:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82794 conditions, 59353 events. 12703/59353 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 690841 event pairs, 11413 based on Foata normal form. 0/52247 useless extension candidates. Maximal degree in co-relation 82696. Up to 23410 conditions per place. [2025-01-09 21:21:19,523 INFO L140 encePairwiseOnDemand]: 1051/1057 looper letters, 240 selfloop transitions, 5 changer transitions 0/961 dead transitions. [2025-01-09 21:21:19,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 961 transitions, 2437 flow [2025-01-09 21:21:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:21:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:21:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4757 transitions. [2025-01-09 21:21:19,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.750078839482813 [2025-01-09 21:21:19,530 INFO L175 Difference]: Start difference. First operand has 952 places, 962 transitions, 1949 flow. Second operand 6 states and 4757 transitions. [2025-01-09 21:21:19,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 961 transitions, 2437 flow [2025-01-09 21:21:19,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 961 transitions, 2427 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:21:19,540 INFO L231 Difference]: Finished difference. Result has 951 places, 961 transitions, 1947 flow [2025-01-09 21:21:19,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1057, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1947, PETRI_PLACES=951, PETRI_TRANSITIONS=961} [2025-01-09 21:21:19,541 INFO L279 CegarLoopForPetriNet]: 981 programPoint places, -30 predicate places. [2025-01-09 21:21:19,541 INFO L471 AbstractCegarLoop]: Abstraction has has 951 places, 961 transitions, 1947 flow [2025-01-09 21:21:19,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 753.5) internal successors, (4521), 6 states have internal predecessors, (4521), 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 21:21:19,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:19,543 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, 1, 1, 1, 1, 1] [2025-01-09 21:21:19,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:21:19,544 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 21:21:19,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash 305621487, now seen corresponding path program 1 times [2025-01-09 21:21:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896187500] [2025-01-09 21:21:19,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:19,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:19,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 21:21:19,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 21:21:19,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:19,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:21:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896187500] [2025-01-09 21:21:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896187500] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:21:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676272618] [2025-01-09 21:21:19,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:21:19,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:21:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:21:19,627 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 21:21:19,628 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 21:21:19,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-09 21:21:19,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 21:21:19,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:21:19,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:19,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 21:21:19,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:21:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:21:19,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:21:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:21:19,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676272618] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:21:19,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 21:21:19,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-01-09 21:21:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918799870] [2025-01-09 21:21:19,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 21:21:19,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:19,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:19,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:19,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1057 [2025-01-09 21:21:19,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 961 transitions, 1947 flow. Second operand has 6 states, 6 states have (on average 970.1666666666666) internal successors, (5821), 6 states have internal predecessors, (5821), 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 21:21:19,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:19,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1057 [2025-01-09 21:21:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:21:20,871 INFO L124 PetriNetUnfolderBase]: 247/4854 cut-off events. [2025-01-09 21:21:20,871 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-09 21:21:20,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 4854 events. 247/4854 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 35989 event pairs, 110 based on Foata normal form. 2/4198 useless extension candidates. Maximal degree in co-relation 5045. Up to 305 conditions per place. [2025-01-09 21:21:20,904 INFO L140 encePairwiseOnDemand]: 1053/1057 looper letters, 29 selfloop transitions, 5 changer transitions 0/965 dead transitions. [2025-01-09 21:21:20,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 965 transitions, 2025 flow [2025-01-09 21:21:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 21:21:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 21:21:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4876 transitions. [2025-01-09 21:21:20,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9226111636707663 [2025-01-09 21:21:20,912 INFO L175 Difference]: Start difference. First operand has 951 places, 961 transitions, 1947 flow. Second operand 5 states and 4876 transitions. [2025-01-09 21:21:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 965 transitions, 2025 flow [2025-01-09 21:21:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 950 places, 965 transitions, 2015 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:21:20,923 INFO L231 Difference]: Finished difference. Result has 953 places, 963 transitions, 1967 flow [2025-01-09 21:21:20,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1057, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1967, PETRI_PLACES=953, PETRI_TRANSITIONS=963} [2025-01-09 21:21:20,924 INFO L279 CegarLoopForPetriNet]: 981 programPoint places, -28 predicate places. [2025-01-09 21:21:20,925 INFO L471 AbstractCegarLoop]: Abstraction has has 953 places, 963 transitions, 1967 flow [2025-01-09 21:21:20,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 970.1666666666666) internal successors, (5821), 6 states have internal predecessors, (5821), 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 21:21:20,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:21:20,927 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:21:20,934 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 21:21:21,132 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 21:21:21,132 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 21:21:21,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:21:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2078010339, now seen corresponding path program 2 times [2025-01-09 21:21:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:21:21,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757898532] [2025-01-09 21:21:21,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 21:21:21,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:21:21,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 135 statements into 2 equivalence classes. [2025-01-09 21:21:21,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 51 of 135 statements. [2025-01-09 21:21:21,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 21:21:21,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:21:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-01-09 21:21:21,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:21:21,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757898532] [2025-01-09 21:21:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757898532] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:21:21,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:21:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:21:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661057814] [2025-01-09 21:21:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:21:21,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:21:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:21:21,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:21:21,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:21:22,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 749 out of 1057 [2025-01-09 21:21:22,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 963 transitions, 1967 flow. Second operand has 6 states, 6 states have (on average 752.3333333333334) internal successors, (4514), 6 states have internal predecessors, (4514), 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 21:21:22,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:21:22,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 749 of 1057 [2025-01-09 21:21:22,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand