./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/libvsync/ticketlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/libvsync/ticketlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e9f7836ebdfb0849cf7f06257ab1fd414077ad21cfcb006a14459421df712fb --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:54:15,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:54:15,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:54:15,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:54:15,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:54:15,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:54:15,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:54:15,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:54:15,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:54:15,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:54:15,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:54:15,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:54:15,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:54:15,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:54:15,081 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:54:15,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:54:15,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:54:15,083 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:54:15,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:54:15,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:54:15,084 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) 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 -> 8e9f7836ebdfb0849cf7f06257ab1fd414077ad21cfcb006a14459421df712fb [2025-03-13 21:54:15,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:54:15,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:54:15,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:54:15,317 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:54:15,317 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:54:15,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/ticketlock.i [2025-03-13 21:54:16,420 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e869f32/8655b795742a45f5ba2f08936062b19d/FLAG4b031958f [2025-03-13 21:54:16,900 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:54:16,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i [2025-03-13 21:54:16,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e869f32/8655b795742a45f5ba2f08936062b19d/FLAG4b031958f [2025-03-13 21:54:16,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e869f32/8655b795742a45f5ba2f08936062b19d [2025-03-13 21:54:16,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:54:16,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:54:16,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:54:16,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:54:17,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:54:17,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:54:16" (1/1) ... [2025-03-13 21:54:17,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fed9f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:17, skipping insertion in model container [2025-03-13 21:54:17,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:54:16" (1/1) ... [2025-03-13 21:54:17,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:54:18,475 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i[194314,194327] [2025-03-13 21:54:18,477 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i[194381,194394] [2025-03-13 21:54:18,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:54:18,505 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:54:18,564 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-03-13 21:54:18,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-03-13 21:54:18,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-03-13 21:54:18,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-03-13 21:54:18,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-03-13 21:54:18,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-03-13 21:54:18,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-03-13 21:54:18,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-03-13 21:54:18,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-03-13 21:54:18,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-03-13 21:54:18,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-03-13 21:54:18,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-03-13 21:54:18,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-03-13 21:54:18,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-03-13 21:54:18,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-03-13 21:54:18,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-03-13 21:54:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-03-13 21:54:18,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-03-13 21:54:18,603 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-03-13 21:54:18,603 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-03-13 21:54:18,603 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-03-13 21:54:18,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-03-13 21:54:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-03-13 21:54:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-03-13 21:54:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-03-13 21:54:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-03-13 21:54:18,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-03-13 21:54:18,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-03-13 21:54:18,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-03-13 21:54:18,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-03-13 21:54:18,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-03-13 21:54:18,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-03-13 21:54:18,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-03-13 21:54:18,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-03-13 21:54:18,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-03-13 21:54:18,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-03-13 21:54:18,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-03-13 21:54:18,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-03-13 21:54:18,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-03-13 21:54:18,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-03-13 21:54:18,611 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-03-13 21:54:18,611 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-03-13 21:54:18,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-03-13 21:54:18,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-03-13 21:54:18,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-03-13 21:54:18,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-03-13 21:54:18,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-03-13 21:54:18,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-03-13 21:54:18,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-03-13 21:54:18,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-03-13 21:54:18,615 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-03-13 21:54:18,616 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-03-13 21:54:18,616 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-03-13 21:54:18,616 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-03-13 21:54:18,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-03-13 21:54:18,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-03-13 21:54:18,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-03-13 21:54:18,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-03-13 21:54:18,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-03-13 21:54:18,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-03-13 21:54:18,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-03-13 21:54:18,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-03-13 21:54:18,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-03-13 21:54:18,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-03-13 21:54:18,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-03-13 21:54:18,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-03-13 21:54:18,620 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-03-13 21:54:18,621 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-03-13 21:54:18,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-03-13 21:54:18,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-03-13 21:54:18,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-03-13 21:54:18,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-03-13 21:54:18,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-03-13 21:54:18,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-03-13 21:54:18,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-03-13 21:54:18,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-03-13 21:54:18,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-03-13 21:54:18,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-03-13 21:54:18,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-03-13 21:54:18,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-03-13 21:54:18,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-03-13 21:54:18,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-03-13 21:54:18,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-03-13 21:54:18,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-03-13 21:54:18,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-03-13 21:54:18,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-03-13 21:54:18,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-03-13 21:54:18,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-03-13 21:54:18,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-03-13 21:54:18,675 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i[194314,194327] [2025-03-13 21:54:18,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i[194381,194394] [2025-03-13 21:54:18,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:54:18,840 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:54:18,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18 WrapperNode [2025-03-13 21:54:18,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:54:18,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:54:18,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:54:18,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:54:18,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,917 INFO L138 Inliner]: procedures = 918, calls = 922, calls flagged for inlining = 823, calls inlined = 39, statements flattened = 352 [2025-03-13 21:54:18,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:54:18,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:54:18,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:54:18,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:54:18,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,949 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 10, 2]. 71 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2, 0]. The 4 writes are split as follows [0, 3, 1]. [2025-03-13 21:54:18,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,960 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:54:18,974 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:54:18,974 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:54:18,974 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:54:18,975 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (1/1) ... [2025-03-13 21:54:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:54:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:54:18,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-13 21:54:19,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-13 21:54:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-13 21:54:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-13 21:54:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-13 21:54:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:54:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:54:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure run [2025-03-13 21:54:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:54:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-13 21:54:19,020 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:54:19,127 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:54:19,128 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:54:19,408 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1885: havoc vatomic32_read_rlx_#t~ret112#1; [2025-03-13 21:54:19,409 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1920: havoc vatomic32_cmpxchg_rlx_#t~ret117#1; [2025-03-13 21:54:19,409 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L2285: havoc vatomic32_await_eq_acq_#t~ret174#1; [2025-03-13 21:54:19,409 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1890: havoc vatomic32_read_acq_#t~ret113#1; [2025-03-13 21:54:19,409 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L4516: havoc vatomic32_get_inc_#t~ret577#1; [2025-03-13 21:54:19,409 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L2115: havoc vatomic32_get_inc_rlx_#t~ret156#1; [2025-03-13 21:54:19,476 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L6007: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2025-03-13 21:54:19,476 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L6007-1: SUMMARY for call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset); srcloc: null [2025-03-13 21:54:19,477 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:54:19,477 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:54:19,477 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:54:19,717 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:54:19,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:54:19 BoogieIcfgContainer [2025-03-13 21:54:19,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:54:19,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:54:19,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:54:19,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:54:19,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:54:16" (1/3) ... [2025-03-13 21:54:19,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1cea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:54:19, skipping insertion in model container [2025-03-13 21:54:19,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:54:18" (2/3) ... [2025-03-13 21:54:19,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1cea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:54:19, skipping insertion in model container [2025-03-13 21:54:19,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:54:19" (3/3) ... [2025-03-13 21:54:19,727 INFO L128 eAbstractionObserver]: Analyzing ICFG ticketlock.i [2025-03-13 21:54:19,740 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:54:19,766 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ticketlock.i that has 2 procedures, 84 locations, 1 initial locations, 20 loop locations, and 2 error locations. [2025-03-13 21:54:19,766 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:54:19,840 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-13 21:54:19,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 152 transitions, 311 flow [2025-03-13 21:54:19,905 INFO L124 PetriNetUnfolderBase]: 79/180 cut-off events. [2025-03-13 21:54:19,908 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:54:19,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 180 events. 79/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 466 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 138. Up to 8 conditions per place. [2025-03-13 21:54:19,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 152 transitions, 311 flow [2025-03-13 21:54:19,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 152 transitions, 311 flow [2025-03-13 21:54:19,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:54:19,935 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;@7d14ee67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:54:19,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-13 21:54:19,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:54:19,944 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2025-03-13 21:54:19,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:54:19,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:19,945 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:19,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:19,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash 477963162, now seen corresponding path program 1 times [2025-03-13 21:54:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:19,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073627313] [2025-03-13 21:54:19,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:20,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-13 21:54:20,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-13 21:54:20,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:20,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:54:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:54:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:54:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073627313] [2025-03-13 21:54:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073627313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:54:20,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:54:20,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:54:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886821662] [2025-03-13 21:54:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:54:20,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:54:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:54:20,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:54:20,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:54:20,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 152 [2025-03-13 21:54:20,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 152 transitions, 311 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:20,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:54:20,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 152 [2025-03-13 21:54:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:54:20,396 INFO L124 PetriNetUnfolderBase]: 409/992 cut-off events. [2025-03-13 21:54:20,396 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:54:20,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 992 events. 409/992 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5611 event pairs, 336 based on Foata normal form. 489/1304 useless extension candidates. Maximal degree in co-relation 1760. Up to 808 conditions per place. [2025-03-13 21:54:20,405 INFO L140 encePairwiseOnDemand]: 93/152 looper letters, 63 selfloop transitions, 0 changer transitions 1/93 dead transitions. [2025-03-13 21:54:20,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 321 flow [2025-03-13 21:54:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:54:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:54:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2025-03-13 21:54:20,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5953947368421053 [2025-03-13 21:54:20,417 INFO L175 Difference]: Start difference. First operand has 87 places, 152 transitions, 311 flow. Second operand 2 states and 181 transitions. [2025-03-13 21:54:20,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 321 flow [2025-03-13 21:54:20,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:54:20,424 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 191 flow [2025-03-13 21:54:20,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=191, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2025-03-13 21:54:20,429 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2025-03-13 21:54:20,431 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 191 flow [2025-03-13 21:54:20,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:20,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:20,431 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:20,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:54:20,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:20,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash -370296883, now seen corresponding path program 1 times [2025-03-13 21:54:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:20,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14964415] [2025-03-13 21:54:20,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:20,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:54:20,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:54:20,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:20,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:54:20,489 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:54:20,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:54:20,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:54:20,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:20,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:54:20,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:54:20,538 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:54:20,539 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-03-13 21:54:20,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-03-13 21:54:20,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-13 21:54:20,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:54:20,541 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 21:54:20,543 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:54:20,543 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 21:54:20,638 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-13 21:54:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 263 transitions, 542 flow [2025-03-13 21:54:20,676 INFO L124 PetriNetUnfolderBase]: 149/341 cut-off events. [2025-03-13 21:54:20,676 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-13 21:54:20,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 341 events. 149/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1205 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 267. Up to 12 conditions per place. [2025-03-13 21:54:20,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 263 transitions, 542 flow [2025-03-13 21:54:20,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 263 transitions, 542 flow [2025-03-13 21:54:20,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:54:20,688 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;@7d14ee67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:54:20,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-13 21:54:20,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:54:20,693 INFO L124 PetriNetUnfolderBase]: 25/59 cut-off events. [2025-03-13 21:54:20,693 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:54:20,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:20,693 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:20,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:20,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1617378062, now seen corresponding path program 1 times [2025-03-13 21:54:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863198375] [2025-03-13 21:54:20,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:20,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-13 21:54:20,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-13 21:54:20,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:20,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:54:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:54:20,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:54:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863198375] [2025-03-13 21:54:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863198375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:54:20,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:54:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:54:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383801785] [2025-03-13 21:54:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:54:20,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:54:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:54:20,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:54:20,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:54:20,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 263 [2025-03-13 21:54:20,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 263 transitions, 542 flow. Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:20,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:54:20,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 263 [2025-03-13 21:54:20,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:54:24,560 INFO L124 PetriNetUnfolderBase]: 37647/61948 cut-off events. [2025-03-13 21:54:24,560 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2025-03-13 21:54:24,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117115 conditions, 61948 events. 37647/61948 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 518694 event pairs, 31290 based on Foata normal form. 27729/78908 useless extension candidates. Maximal degree in co-relation 107213. Up to 54945 conditions per place. [2025-03-13 21:54:24,900 INFO L140 encePairwiseOnDemand]: 161/263 looper letters, 115 selfloop transitions, 0 changer transitions 1/161 dead transitions. [2025-03-13 21:54:24,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 161 transitions, 570 flow [2025-03-13 21:54:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 21:54:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 21:54:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 308 transitions. [2025-03-13 21:54:24,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5855513307984791 [2025-03-13 21:54:24,903 INFO L175 Difference]: Start difference. First operand has 148 places, 263 transitions, 542 flow. Second operand 2 states and 308 transitions. [2025-03-13 21:54:24,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 161 transitions, 570 flow [2025-03-13 21:54:24,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 161 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:54:24,907 INFO L231 Difference]: Finished difference. Result has 149 places, 160 transitions, 336 flow [2025-03-13 21:54:24,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=149, PETRI_TRANSITIONS=160} [2025-03-13 21:54:24,908 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2025-03-13 21:54:24,908 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 160 transitions, 336 flow [2025-03-13 21:54:24,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:24,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:24,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:24,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:54:24,910 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:24,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1355899315, now seen corresponding path program 1 times [2025-03-13 21:54:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:24,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489940722] [2025-03-13 21:54:24,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:24,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:24,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-13 21:54:24,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:54:24,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:24,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:54:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:54:25,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:54:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489940722] [2025-03-13 21:54:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489940722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:54:25,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:54:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:54:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477193762] [2025-03-13 21:54:25,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:54:25,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:54:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:54:25,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:54:25,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:54:25,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 263 [2025-03-13 21:54:25,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 160 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:25,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:54:25,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 263 [2025-03-13 21:54:25,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:54:28,119 INFO L124 PetriNetUnfolderBase]: 33246/55011 cut-off events. [2025-03-13 21:54:28,119 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2025-03-13 21:54:28,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103840 conditions, 55011 events. 33246/55011 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 442599 event pairs, 26850 based on Foata normal form. 0/45131 useless extension candidates. Maximal degree in co-relation 103835. Up to 48553 conditions per place. [2025-03-13 21:54:28,573 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 165 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2025-03-13 21:54:28,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 212 transitions, 774 flow [2025-03-13 21:54:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:54:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:54:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2025-03-13 21:54:28,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3840304182509506 [2025-03-13 21:54:28,578 INFO L175 Difference]: Start difference. First operand has 149 places, 160 transitions, 336 flow. Second operand 3 states and 303 transitions. [2025-03-13 21:54:28,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 212 transitions, 774 flow [2025-03-13 21:54:28,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 212 transitions, 774 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:54:28,587 INFO L231 Difference]: Finished difference. Result has 151 places, 161 transitions, 348 flow [2025-03-13 21:54:28,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=151, PETRI_TRANSITIONS=161} [2025-03-13 21:54:28,589 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, 3 predicate places. [2025-03-13 21:54:28,590 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 161 transitions, 348 flow [2025-03-13 21:54:28,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:28,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:28,590 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:54:28,590 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:28,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 506803356, now seen corresponding path program 1 times [2025-03-13 21:54:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247282090] [2025-03-13 21:54:28,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:28,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-13 21:54:28,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:54:28,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:28,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:54:28,625 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:54:28,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-13 21:54:28,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:54:28,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:28,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:54:28,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:54:28,654 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:54:28,654 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-03-13 21:54:28,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-03-13 21:54:28,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-13 21:54:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:54:28,655 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-13 21:54:28,656 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:54:28,656 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-13 21:54:28,753 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-13 21:54:28,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 374 transitions, 775 flow [2025-03-13 21:54:28,801 INFO L124 PetriNetUnfolderBase]: 234/543 cut-off events. [2025-03-13 21:54:28,801 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-13 21:54:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 543 events. 234/543 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2218 event pairs, 1 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 418. Up to 24 conditions per place. [2025-03-13 21:54:28,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 374 transitions, 775 flow [2025-03-13 21:54:28,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 374 transitions, 775 flow [2025-03-13 21:54:28,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:54:28,819 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;@7d14ee67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:54:28,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-13 21:54:28,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:54:28,822 INFO L124 PetriNetUnfolderBase]: 25/59 cut-off events. [2025-03-13 21:54:28,822 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:54:28,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:54:28,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:54:28,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:54:28,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:54:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash -631272600, now seen corresponding path program 1 times [2025-03-13 21:54:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:54:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686200604] [2025-03-13 21:54:28,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:54:28,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:54:28,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-13 21:54:28,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-13 21:54:28,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:54:28,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:54:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:54:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:54:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686200604] [2025-03-13 21:54:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686200604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:54:28,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:54:28,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:54:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304435783] [2025-03-13 21:54:28,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:54:28,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 21:54:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:54:28,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 21:54:28,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 21:54:28,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 374 [2025-03-13 21:54:28,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 374 transitions, 775 flow. Second operand has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:54:28,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:54:28,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 374 [2025-03-13 21:54:28,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand