./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/libvsync/rec_mcslock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/rec_mcslock.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 89f4ecf17cdd703d57fdf977621016996b601a0e10c2b1b5ffeae48ee5db4f63 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:40:57,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:40:57,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:40:57,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:40:57,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:40:57,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:40:57,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:40:57,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:40:57,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:40:57,425 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:40:57,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:40:57,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:40:57,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:40:57,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:40:57,426 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:40:57,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:40:57,427 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:40:57,428 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:40:57,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:40:57,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:40:57,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:40:57,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:40:57,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:40:57,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:40:57,429 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 -> 89f4ecf17cdd703d57fdf977621016996b601a0e10c2b1b5ffeae48ee5db4f63 [2025-03-08 17:40:57,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:40:57,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:40:57,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:40:57,664 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:40:57,664 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:40:57,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/rec_mcslock.i [2025-03-08 17:40:58,736 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3f8c79a/2953492871fd47b8932517f33087c739/FLAGce2187285 [2025-03-08 17:40:59,094 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:40:59,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/rec_mcslock.i [2025-03-08 17:40:59,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3f8c79a/2953492871fd47b8932517f33087c739/FLAGce2187285 [2025-03-08 17:40:59,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3f8c79a/2953492871fd47b8932517f33087c739 [2025-03-08 17:40:59,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:40:59,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:40:59,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:40:59,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:40:59,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:40:59,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:40:59" (1/1) ... [2025-03-08 17:40:59,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a374779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:59, skipping insertion in model container [2025-03-08 17:40:59,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:40:59" (1/1) ... [2025-03-08 17:40:59,340 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:41:00,582 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/rec_mcslock.i[173235,173248] [2025-03-08 17:41:00,589 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/rec_mcslock.i[173609,173622] [2025-03-08 17:41:00,753 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/rec_mcslock.i[196613,196626] [2025-03-08 17:41:00,753 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/rec_mcslock.i[196680,196693] [2025-03-08 17:41:00,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:41:00,772 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:41:00,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-03-08 17:41:00,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-03-08 17:41:00,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-03-08 17:41:00,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-03-08 17:41:00,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-03-08 17:41:00,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-03-08 17:41:00,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-03-08 17:41:00,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-03-08 17:41:00,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-03-08 17:41:00,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-03-08 17:41:00,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-03-08 17:41:00,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-03-08 17:41:00,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-03-08 17:41:00,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-03-08 17:41:00,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-03-08 17:41:00,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-03-08 17:41:00,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-03-08 17:41:00,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-03-08 17:41:00,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-03-08 17:41:00,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-03-08 17:41:00,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-03-08 17:41:00,873 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-03-08 17:41:00,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-03-08 17:41:00,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-03-08 17:41:00,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-03-08 17:41:00,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-03-08 17:41:00,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-03-08 17:41:00,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-03-08 17:41:00,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-03-08 17:41:00,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-03-08 17:41:00,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-03-08 17:41:00,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-03-08 17:41:00,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-03-08 17:41:00,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-03-08 17:41:00,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-03-08 17:41:00,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-03-08 17:41:00,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-03-08 17:41:00,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-03-08 17:41:00,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-03-08 17:41:00,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-03-08 17:41:00,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-03-08 17:41:00,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-03-08 17:41:00,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-03-08 17:41:00,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-03-08 17:41:00,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-03-08 17:41:00,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-03-08 17:41:00,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-03-08 17:41:00,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-03-08 17:41:00,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-03-08 17:41:00,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-03-08 17:41:00,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-03-08 17:41:00,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-03-08 17:41:00,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-03-08 17:41:00,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-03-08 17:41:00,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-03-08 17:41:00,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-03-08 17:41:00,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-03-08 17:41:00,886 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-03-08 17:41:00,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-03-08 17:41:00,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-03-08 17:41:00,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-03-08 17:41:00,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-03-08 17:41:00,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-03-08 17:41:00,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-03-08 17:41:00,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-03-08 17:41:00,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-03-08 17:41:00,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-03-08 17:41:00,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-03-08 17:41:00,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-03-08 17:41:00,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-03-08 17:41:00,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-03-08 17:41:00,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-03-08 17:41:00,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-03-08 17:41:00,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-03-08 17:41:00,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-03-08 17:41:00,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-03-08 17:41:00,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-03-08 17:41:00,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-03-08 17:41:00,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-03-08 17:41:00,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-03-08 17:41:00,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-03-08 17:41:00,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-03-08 17:41:00,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-03-08 17:41:00,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-03-08 17:41:00,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-03-08 17:41:00,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-03-08 17:41:00,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-03-08 17:41:00,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-03-08 17:41:00,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-03-08 17:41:00,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-03-08 17:41:00,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-03-08 17:41:00,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-03-08 17:41:00,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-03-08 17:41:00,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-03-08 17:41:00,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-03-08 17:41:00,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-03-08 17:41:00,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-03-08 17:41:00,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-03-08 17:41:00,899 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-03-08 17:41:00,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-03-08 17:41:00,935 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/rec_mcslock.i[173235,173248] [2025-03-08 17:41:00,937 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/rec_mcslock.i[173609,173622] [2025-03-08 17:41:00,946 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/rec_mcslock.i[196613,196626] [2025-03-08 17:41:00,946 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/rec_mcslock.i[196680,196693] [2025-03-08 17:41:00,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:41:01,163 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:41:01,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01 WrapperNode [2025-03-08 17:41:01,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:41:01,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:41:01,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:41:01,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:41:01,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,275 INFO L138 Inliner]: procedures = 924, calls = 951, calls flagged for inlining = 834, calls inlined = 53, statements flattened = 455 [2025-03-08 17:41:01,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:41:01,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:41:01,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:41:01,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:41:01,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,318 INFO L175 MemorySlicer]: Split 33 memory accesses to 3 slices as follows [2, 2, 29]. 88 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 0, 9]. The 11 writes are split as follows [0, 1, 10]. [2025-03-08 17:41:01,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:41:01,337 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:41:01,337 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:41:01,337 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:41:01,337 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (1/1) ... [2025-03-08 17:41:01,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:41:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:41:01,372 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) [2025-03-08 17:41:01,375 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 [2025-03-08 17:41:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:41:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:41:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:41:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure run [2025-03-08 17:41:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:41:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:41:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:41:01,395 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:41:01,541 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:41:01,543 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:41:01,922 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1885: havoc vatomic32_read_rlx_#t~ret112#1; [2025-03-08 17:41:01,923 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2285: havoc vatomic32_await_eq_acq_#t~ret174#1; [2025-03-08 17:41:01,923 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3710: havoc vatomicptr_await_neq_rlx_#t~ret421#1.base, vatomicptr_await_neq_rlx_#t~ret421#1.offset; [2025-03-08 17:41:01,923 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3655: havoc vatomicptr_read_rlx_#t~ret412#1.base, vatomicptr_read_rlx_#t~ret412#1.offset; [2025-03-08 17:41:01,923 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3660: havoc vatomicptr_read_acq_#t~ret413#1.base, vatomicptr_read_acq_#t~ret413#1.offset; [2025-03-08 17:41:01,923 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3700: havoc vatomicptr_cmpxchg_rel_#t~ret419#1.base, vatomicptr_cmpxchg_rel_#t~ret419#1.offset; [2025-03-08 17:41:01,983 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6033: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2025-03-08 17:41:01,984 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6033-1: SUMMARY for call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset); srcloc: null [2025-03-08 17:41:01,985 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:41:01,986 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:41:02,199 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:41:02,199 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:41:02,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:41:02 BoogieIcfgContainer [2025-03-08 17:41:02,199 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:41:02,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:41:02,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:41:02,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:41:02,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:40:59" (1/3) ... [2025-03-08 17:41:02,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7884dc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:41:02, skipping insertion in model container [2025-03-08 17:41:02,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:41:01" (2/3) ... [2025-03-08 17:41:02,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7884dc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:41:02, skipping insertion in model container [2025-03-08 17:41:02,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:41:02" (3/3) ... [2025-03-08 17:41:02,206 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_mcslock.i [2025-03-08 17:41:02,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:41:02,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_mcslock.i that has 2 procedures, 109 locations, 1 initial locations, 21 loop locations, and 3 error locations. [2025-03-08 17:41:02,218 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:41:02,336 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-08 17:41:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 180 transitions, 367 flow [2025-03-08 17:41:02,409 INFO L124 PetriNetUnfolderBase]: 82/208 cut-off events. [2025-03-08 17:41:02,411 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:41:02,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 208 events. 82/208 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 487 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2025-03-08 17:41:02,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 180 transitions, 367 flow [2025-03-08 17:41:02,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 180 transitions, 367 flow [2025-03-08 17:41:02,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:41:02,435 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;@7f157215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:41:02,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-08 17:41:02,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:41:02,445 INFO L124 PetriNetUnfolderBase]: 16/37 cut-off events. [2025-03-08 17:41:02,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:41:02,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:41:02,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-08 17:41:02,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:41:02,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:41:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -49282024, now seen corresponding path program 1 times [2025-03-08 17:41:02,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:41:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098906624] [2025-03-08 17:41:02,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:41:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:41:02,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:41:02,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:41:02,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:02,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:41:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:41:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:41:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098906624] [2025-03-08 17:41:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098906624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:41:02,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:41:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:41:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553311164] [2025-03-08 17:41:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:41:02,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 17:41:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:41:02,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 17:41:02,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:41:02,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 180 [2025-03-08 17:41:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 180 transitions, 367 flow. Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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) [2025-03-08 17:41:02,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:41:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 180 [2025-03-08 17:41:02,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:41:02,960 INFO L124 PetriNetUnfolderBase]: 613/1424 cut-off events. [2025-03-08 17:41:02,960 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:41:02,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 1424 events. 613/1424 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7978 event pairs, 504 based on Foata normal form. 667/1846 useless extension candidates. Maximal degree in co-relation 2584. Up to 1201 conditions per place. [2025-03-08 17:41:02,968 INFO L140 encePairwiseOnDemand]: 122/180 looper letters, 89 selfloop transitions, 0 changer transitions 0/122 dead transitions. [2025-03-08 17:41:02,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 429 flow [2025-03-08 17:41:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 17:41:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-08 17:41:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2025-03-08 17:41:02,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2025-03-08 17:41:02,978 INFO L175 Difference]: Start difference. First operand has 112 places, 180 transitions, 367 flow. Second operand 2 states and 213 transitions. [2025-03-08 17:41:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 429 flow [2025-03-08 17:41:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:41:02,985 INFO L231 Difference]: Finished difference. Result has 113 places, 122 transitions, 251 flow [2025-03-08 17:41:02,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=251, PETRI_PLACES=113, PETRI_TRANSITIONS=122} [2025-03-08 17:41:02,990 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2025-03-08 17:41:02,990 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 122 transitions, 251 flow [2025-03-08 17:41:02,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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) [2025-03-08 17:41:02,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:41:02,990 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:41:02,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:41:02,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:41:02,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:41:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -199880320, now seen corresponding path program 1 times [2025-03-08 17:41:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:41:02,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254381699] [2025-03-08 17:41:02,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:41:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:41:03,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:41:03,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:41:03,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:03,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:41:03,064 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:41:03,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:41:03,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:41:03,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:03,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:41:03,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:41:03,123 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:41:03,124 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-08 17:41:03,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-08 17:41:03,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-08 17:41:03,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-08 17:41:03,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-08 17:41:03,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:41:03,126 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 17:41:03,132 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 17:41:03,132 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-08 17:41:03,253 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:41:03,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 319 transitions, 654 flow [2025-03-08 17:41:03,301 INFO L124 PetriNetUnfolderBase]: 155/397 cut-off events. [2025-03-08 17:41:03,301 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-08 17:41:03,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 397 events. 155/397 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1335 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 323. Up to 12 conditions per place. [2025-03-08 17:41:03,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 319 transitions, 654 flow [2025-03-08 17:41:03,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 319 transitions, 654 flow [2025-03-08 17:41:03,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:41:03,317 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;@7f157215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:41:03,317 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-08 17:41:03,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:41:03,323 INFO L124 PetriNetUnfolderBase]: 25/59 cut-off events. [2025-03-08 17:41:03,323 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:41:03,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:41:03,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:41:03,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:41:03,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:41:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash -386717299, now seen corresponding path program 1 times [2025-03-08 17:41:03,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:41:03,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989173754] [2025-03-08 17:41:03,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:41:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:41:03,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 17:41:03,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 17:41:03,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:03,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:41:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:41:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:41:03,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989173754] [2025-03-08 17:41:03,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989173754] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:41:03,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:41:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:41:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029276186] [2025-03-08 17:41:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:41:03,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 17:41:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:41:03,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 17:41:03,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:41:03,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 319 [2025-03-08 17:41:03,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 319 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 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) [2025-03-08 17:41:03,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:41:03,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 319 [2025-03-08 17:41:03,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:41:12,157 INFO L124 PetriNetUnfolderBase]: 85725/136280 cut-off events. [2025-03-08 17:41:12,157 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2025-03-08 17:41:12,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261248 conditions, 136280 events. 85725/136280 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 1139151 event pairs, 71358 based on Foata normal form. 54548/169567 useless extension candidates. Maximal degree in co-relation 246642. Up to 124641 conditions per place. [2025-03-08 17:41:12,794 INFO L140 encePairwiseOnDemand]: 219/319 looper letters, 166 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2025-03-08 17:41:12,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 219 transitions, 786 flow [2025-03-08 17:41:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 17:41:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-08 17:41:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 372 transitions. [2025-03-08 17:41:12,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5830721003134797 [2025-03-08 17:41:12,797 INFO L175 Difference]: Start difference. First operand has 198 places, 319 transitions, 654 flow. Second operand 2 states and 372 transitions. [2025-03-08 17:41:12,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 219 transitions, 786 flow [2025-03-08 17:41:12,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:41:12,801 INFO L231 Difference]: Finished difference. Result has 199 places, 219 transitions, 454 flow [2025-03-08 17:41:12,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=454, PETRI_PLACES=199, PETRI_TRANSITIONS=219} [2025-03-08 17:41:12,802 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2025-03-08 17:41:12,802 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 219 transitions, 454 flow [2025-03-08 17:41:12,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 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) [2025-03-08 17:41:12,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:41:12,803 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:41:12,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:41:12,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:41:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:41:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash -268088100, now seen corresponding path program 1 times [2025-03-08 17:41:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:41:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023039785] [2025-03-08 17:41:12,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:41:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:41:12,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 17:41:12,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 17:41:12,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:12,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:41:12,851 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:41:12,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 17:41:12,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 17:41:12,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:12,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:41:12,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:41:12,896 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-03-08 17:41:12,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-03-08 17:41:12,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:41:12,897 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 17:41:12,897 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 17:41:12,897 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-08 17:41:13,062 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-08 17:41:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 458 transitions, 943 flow [2025-03-08 17:41:13,148 INFO L124 PetriNetUnfolderBase]: 243/627 cut-off events. [2025-03-08 17:41:13,148 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-08 17:41:13,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 627 events. 243/627 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2649 event pairs, 1 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 502. Up to 24 conditions per place. [2025-03-08 17:41:13,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 458 transitions, 943 flow [2025-03-08 17:41:13,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 458 transitions, 943 flow [2025-03-08 17:41:13,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:41:13,178 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;@7f157215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:41:13,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:41:13,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:41:13,184 INFO L124 PetriNetUnfolderBase]: 25/59 cut-off events. [2025-03-08 17:41:13,184 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:41:13,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:41:13,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:41:13,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:41:13,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:41:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash -809843113, now seen corresponding path program 1 times [2025-03-08 17:41:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:41:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959170707] [2025-03-08 17:41:13,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:41:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:41:13,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 17:41:13,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 17:41:13,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:41:13,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:41:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:41:13,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:41:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959170707] [2025-03-08 17:41:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959170707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:41:13,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:41:13,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:41:13,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143222628] [2025-03-08 17:41:13,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:41:13,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 17:41:13,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:41:13,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 17:41:13,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:41:13,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 458 [2025-03-08 17:41:13,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 458 transitions, 943 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2025-03-08 17:41:13,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:41:13,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 458 [2025-03-08 17:41:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand