./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 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:31:29,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:31:29,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:31:29,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:31:29,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:31:29,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:31:29,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:31:29,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:31:29,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:31:29,455 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:31:29,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:31:29,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:31:29,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:31:29,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:31:29,458 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:31:29,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:31:29,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:31:29,459 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:31:29,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:31:29,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:31:29,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:31:29,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:31:29,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:31:29,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:31:29,462 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:31:29,462 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:31:29,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:31:29,462 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:31:29,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:31:29,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:31:29,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:31:29,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:31:29,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:31:29,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:31:29,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:31:29,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:31:29,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:31:29,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:31:29,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:31:29,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:31:29,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:31:29,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:31:29,467 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f4ecf17cdd703d57fdf977621016996b601a0e10c2b1b5ffeae48ee5db4f63 [2024-11-12 08:31:29,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:31:29,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:31:29,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:31:29,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:31:29,756 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:31:29,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/rec_mcslock.i [2024-11-12 08:31:31,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:31:31,660 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:31:31,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/rec_mcslock.i [2024-11-12 08:31:31,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e452d5f/1e0f5e8ad82d4e7cb861104a76d45894/FLAGbcb3dfb1a [2024-11-12 08:31:31,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e452d5f/1e0f5e8ad82d4e7cb861104a76d45894 [2024-11-12 08:31:31,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:31:31,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:31:31,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:31:31,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:31:31,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:31:31,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:31:31" (1/1) ... [2024-11-12 08:31:31,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dccab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:31, skipping insertion in model container [2024-11-12 08:31:31,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:31:31" (1/1) ... [2024-11-12 08:31:31,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:31:33,498 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] [2024-11-12 08:31:33,505 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] [2024-11-12 08:31:33,713 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] [2024-11-12 08:31:33,714 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] [2024-11-12 08:31:33,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:31:33,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:31:33,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2024-11-12 08:31:33,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2024-11-12 08:31:33,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2024-11-12 08:31:33,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2024-11-12 08:31:33,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2024-11-12 08:31:33,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2024-11-12 08:31:33,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2024-11-12 08:31:33,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2024-11-12 08:31:33,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2024-11-12 08:31:33,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2024-11-12 08:31:33,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2024-11-12 08:31:33,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2024-11-12 08:31:33,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2024-11-12 08:31:33,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2024-11-12 08:31:33,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2024-11-12 08:31:33,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2024-11-12 08:31:33,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2024-11-12 08:31:33,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2024-11-12 08:31:33,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2024-11-12 08:31:33,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2024-11-12 08:31:33,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2024-11-12 08:31:33,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2024-11-12 08:31:33,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2024-11-12 08:31:33,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2024-11-12 08:31:33,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2024-11-12 08:31:33,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2024-11-12 08:31:33,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2024-11-12 08:31:33,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2024-11-12 08:31:33,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2024-11-12 08:31:33,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2024-11-12 08:31:33,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2024-11-12 08:31:33,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2024-11-12 08:31:33,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2024-11-12 08:31:33,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2024-11-12 08:31:33,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2024-11-12 08:31:33,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2024-11-12 08:31:33,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2024-11-12 08:31:33,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2024-11-12 08:31:33,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2024-11-12 08:31:33,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2024-11-12 08:31:33,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2024-11-12 08:31:33,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2024-11-12 08:31:33,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2024-11-12 08:31:33,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2024-11-12 08:31:33,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2024-11-12 08:31:33,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2024-11-12 08:31:33,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2024-11-12 08:31:33,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2024-11-12 08:31:33,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2024-11-12 08:31:33,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2024-11-12 08:31:33,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2024-11-12 08:31:33,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2024-11-12 08:31:33,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2024-11-12 08:31:33,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2024-11-12 08:31:33,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2024-11-12 08:31:33,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2024-11-12 08:31:33,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2024-11-12 08:31:33,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2024-11-12 08:31:33,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2024-11-12 08:31:33,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2024-11-12 08:31:33,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2024-11-12 08:31:33,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2024-11-12 08:31:33,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2024-11-12 08:31:33,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2024-11-12 08:31:33,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2024-11-12 08:31:33,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2024-11-12 08:31:33,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2024-11-12 08:31:33,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2024-11-12 08:31:33,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2024-11-12 08:31:33,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2024-11-12 08:31:33,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2024-11-12 08:31:33,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2024-11-12 08:31:33,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2024-11-12 08:31:33,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2024-11-12 08:31:33,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2024-11-12 08:31:33,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2024-11-12 08:31:33,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2024-11-12 08:31:33,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2024-11-12 08:31:33,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2024-11-12 08:31:33,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2024-11-12 08:31:33,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2024-11-12 08:31:33,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2024-11-12 08:31:33,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2024-11-12 08:31:33,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2024-11-12 08:31:33,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2024-11-12 08:31:33,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2024-11-12 08:31:33,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2024-11-12 08:31:33,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2024-11-12 08:31:33,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2024-11-12 08:31:33,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2024-11-12 08:31:33,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2024-11-12 08:31:33,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2024-11-12 08:31:33,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2024-11-12 08:31:33,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2024-11-12 08:31:33,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2024-11-12 08:31:33,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2024-11-12 08:31:33,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2024-11-12 08:31:33,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2024-11-12 08:31:33,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2024-11-12 08:31:33,873 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2024-11-12 08:31:33,923 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] [2024-11-12 08:31:33,924 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] [2024-11-12 08:31:33,945 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] [2024-11-12 08:31:33,946 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] [2024-11-12 08:31:33,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:31:34,225 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:31:34,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34 WrapperNode [2024-11-12 08:31:34,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:31:34,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:31:34,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:31:34,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:31:34,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,423 INFO L138 Inliner]: procedures = 924, calls = 951, calls flagged for inlining = 834, calls inlined = 53, statements flattened = 504 [2024-11-12 08:31:34,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:31:34,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:31:34,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:31:34,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:31:34,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,509 INFO L175 MemorySlicer]: Split 33 memory accesses to 3 slices as follows [2, 29, 2]. 88 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 9, 0]. The 11 writes are split as follows [0, 10, 1]. [2024-11-12 08:31:34,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:31:34,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:31:34,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:31:34,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:31:34,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (1/1) ... [2024-11-12 08:31:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:31:34,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:31:34,605 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) [2024-11-12 08:31:34,607 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 [2024-11-12 08:31:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:31:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:31:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:31:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:31:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure run [2024-11-12 08:31:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 08:31:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-12 08:31:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-12 08:31:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-12 08:31:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:31:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:31:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:31:34,652 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:31:34,863 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:31:34,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:31:35,552 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:31:35,552 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:31:35,928 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:31:35,928 INFO L316 CfgBuilder]: Removed 71 assume(true) statements. [2024-11-12 08:31:35,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:31:35 BoogieIcfgContainer [2024-11-12 08:31:35,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:31:35,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:31:35,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:31:35,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:31:35,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:31:31" (1/3) ... [2024-11-12 08:31:35,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fce5cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:31:35, skipping insertion in model container [2024-11-12 08:31:35,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:31:34" (2/3) ... [2024-11-12 08:31:35,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fce5cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:31:35, skipping insertion in model container [2024-11-12 08:31:35,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:31:35" (3/3) ... [2024-11-12 08:31:35,941 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_mcslock.i [2024-11-12 08:31:35,959 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:31:35,960 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-12 08:31:35,960 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:31:36,097 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 08:31:36,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 198 transitions, 403 flow [2024-11-12 08:31:36,215 INFO L124 PetriNetUnfolderBase]: 82/228 cut-off events. [2024-11-12 08:31:36,216 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:31:36,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 228 events. 82/228 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 588 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 182. Up to 6 conditions per place. [2024-11-12 08:31:36,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 198 transitions, 403 flow [2024-11-12 08:31:36,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 198 transitions, 403 flow [2024-11-12 08:31:36,240 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:31:36,248 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;@1a4c30e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:31:36,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-12 08:31:36,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:31:36,261 INFO L124 PetriNetUnfolderBase]: 13/40 cut-off events. [2024-11-12 08:31:36,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:31:36,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:36,262 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:36,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 08:31:36,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:36,269 INFO L85 PathProgramCache]: Analyzing trace with hash 56359619, now seen corresponding path program 1 times [2024-11-12 08:31:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540398643] [2024-11-12 08:31:36,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:36,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:36,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:36,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540398643] [2024-11-12 08:31:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540398643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:36,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:31:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081857545] [2024-11-12 08:31:36,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:36,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:31:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:31:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:31:36,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 198 [2024-11-12 08:31:36,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 198 transitions, 403 flow. Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-11-12 08:31:36,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:36,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 198 [2024-11-12 08:31:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:36,985 INFO L124 PetriNetUnfolderBase]: 613/1547 cut-off events. [2024-11-12 08:31:36,985 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:31:36,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 1547 events. 613/1547 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9301 event pairs, 504 based on Foata normal form. 926/2226 useless extension candidates. Maximal degree in co-relation 2704. Up to 1201 conditions per place. [2024-11-12 08:31:37,002 INFO L140 encePairwiseOnDemand]: 140/198 looper letters, 89 selfloop transitions, 0 changer transitions 0/140 dead transitions. [2024-11-12 08:31:37,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 140 transitions, 465 flow [2024-11-12 08:31:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 08:31:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 08:31:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2024-11-12 08:31:37,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2024-11-12 08:31:37,016 INFO L175 Difference]: Start difference. First operand has 130 places, 198 transitions, 403 flow. Second operand 2 states and 249 transitions. [2024-11-12 08:31:37,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 140 transitions, 465 flow [2024-11-12 08:31:37,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 140 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:31:37,023 INFO L231 Difference]: Finished difference. Result has 131 places, 140 transitions, 287 flow [2024-11-12 08:31:37,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=287, PETRI_PLACES=131, PETRI_TRANSITIONS=140} [2024-11-12 08:31:37,029 INFO L279 CegarLoopForPetriNet]: 130 programPoint places, 1 predicate places. [2024-11-12 08:31:37,029 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 140 transitions, 287 flow [2024-11-12 08:31:37,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-11-12 08:31:37,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:37,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:37,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:31:37,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 08:31:37,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1317732176, now seen corresponding path program 1 times [2024-11-12 08:31:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580821612] [2024-11-12 08:31:37,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:31:37,109 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 08:31:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:31:37,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 08:31:37,186 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 08:31:37,188 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-12 08:31:37,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-12 08:31:37,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-12 08:31:37,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-12 08:31:37,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-12 08:31:37,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:31:37,193 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 08:31:37,196 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 08:31:37,197 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 08:31:37,402 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:31:37,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 351 transitions, 718 flow [2024-11-12 08:31:37,497 INFO L124 PetriNetUnfolderBase]: 155/433 cut-off events. [2024-11-12 08:31:37,498 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 08:31:37,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 433 events. 155/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1633 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 353. Up to 12 conditions per place. [2024-11-12 08:31:37,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 351 transitions, 718 flow [2024-11-12 08:31:37,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 351 transitions, 718 flow [2024-11-12 08:31:37,524 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:31:37,528 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;@1a4c30e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:31:37,528 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 08:31:37,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:31:37,539 INFO L124 PetriNetUnfolderBase]: 21/62 cut-off events. [2024-11-12 08:31:37,539 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:31:37,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:37,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:37,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:31:37,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 88183787, now seen corresponding path program 1 times [2024-11-12 08:31:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756219475] [2024-11-12 08:31:37,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:37,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756219475] [2024-11-12 08:31:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756219475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:37,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:37,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:31:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891333503] [2024-11-12 08:31:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:37,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:31:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:31:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:31:37,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 351 [2024-11-12 08:31:37,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 351 transitions, 718 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2024-11-12 08:31:37,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:37,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 351 [2024-11-12 08:31:37,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:31:52,761 INFO L124 PetriNetUnfolderBase]: 85742/145115 cut-off events. [2024-11-12 08:31:52,761 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2024-11-12 08:31:53,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270109 conditions, 145115 events. 85742/145115 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 2798. Compared 1356816 event pairs, 71366 based on Foata normal form. 79576/203064 useless extension candidates. Maximal degree in co-relation 254973. Up to 124667 conditions per place. [2024-11-12 08:31:53,751 INFO L140 encePairwiseOnDemand]: 251/351 looper letters, 166 selfloop transitions, 0 changer transitions 0/251 dead transitions. [2024-11-12 08:31:53,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 251 transitions, 850 flow [2024-11-12 08:31:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 08:31:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 08:31:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 436 transitions. [2024-11-12 08:31:53,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6210826210826211 [2024-11-12 08:31:53,760 INFO L175 Difference]: Start difference. First operand has 230 places, 351 transitions, 718 flow. Second operand 2 states and 436 transitions. [2024-11-12 08:31:53,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 251 transitions, 850 flow [2024-11-12 08:31:53,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 251 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:31:53,773 INFO L231 Difference]: Finished difference. Result has 231 places, 251 transitions, 518 flow [2024-11-12 08:31:53,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=518, PETRI_PLACES=231, PETRI_TRANSITIONS=251} [2024-11-12 08:31:53,777 INFO L279 CegarLoopForPetriNet]: 230 programPoint places, 1 predicate places. [2024-11-12 08:31:53,777 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 251 transitions, 518 flow [2024-11-12 08:31:53,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2024-11-12 08:31:53,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:53,778 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:53,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:31:53,778 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:31:53,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1962870628, now seen corresponding path program 1 times [2024-11-12 08:31:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642112333] [2024-11-12 08:31:53,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:31:53,836 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 08:31:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:31:53,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 08:31:53,901 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 08:31:53,902 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-12 08:31:53,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-12 08:31:53,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-12 08:31:53,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-12 08:31:53,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-12 08:31:53,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-12 08:31:53,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:31:53,903 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 08:31:53,904 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 08:31:53,904 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 08:31:54,122 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:31:54,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 504 transitions, 1035 flow [2024-11-12 08:31:54,521 INFO L124 PetriNetUnfolderBase]: 243/679 cut-off events. [2024-11-12 08:31:54,521 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-12 08:31:54,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 679 events. 243/679 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3052 event pairs, 1 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 546. Up to 24 conditions per place. [2024-11-12 08:31:54,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 504 transitions, 1035 flow [2024-11-12 08:31:54,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 504 transitions, 1035 flow [2024-11-12 08:31:54,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:31:54,559 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;@1a4c30e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:31:54,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-12 08:31:54,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:31:54,566 INFO L124 PetriNetUnfolderBase]: 21/62 cut-off events. [2024-11-12 08:31:54,566 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:31:54,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:31:54,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:31:54,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 08:31:54,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:31:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 222730723, now seen corresponding path program 1 times [2024-11-12 08:31:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:31:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250605994] [2024-11-12 08:31:54,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:31:54,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:31:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:31:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:31:54,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:31:54,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250605994] [2024-11-12 08:31:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250605994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:31:54,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:31:54,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:31:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663535916] [2024-11-12 08:31:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:31:54,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:31:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:31:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:31:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:31:54,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 504 [2024-11-12 08:31:54,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 504 transitions, 1035 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2024-11-12 08:31:54,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:31:54,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 504 [2024-11-12 08:31:54,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand