./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/libvsync/mcslock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/libvsync/mcslock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 185c5ecec118867d41d6d4e251a2153dc547f1cc961cdbc2b790292b6debb75b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:32:07,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:32:07,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:32:07,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:32:07,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:32:07,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:32:07,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:32:07,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:32:07,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:32:07,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:32:07,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:32:07,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:32:07,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:32:07,344 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:32:07,345 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:32:07,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:32:07,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:32:07,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:32:07,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:32:07,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:32:07,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:32:07,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:32:07,346 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 185c5ecec118867d41d6d4e251a2153dc547f1cc961cdbc2b790292b6debb75b [2025-03-09 01:32:07,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:32:07,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:32:07,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:32:07,617 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:32:07,618 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:32:07,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/mcslock.i [2025-03-09 01:32:08,761 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc6d36a2/0cf62e207ebf4eb7bbcee6622edb4506/FLAG899a58454 [2025-03-09 01:32:09,212 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:32:09,214 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/mcslock.i [2025-03-09 01:32:09,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc6d36a2/0cf62e207ebf4eb7bbcee6622edb4506/FLAG899a58454 [2025-03-09 01:32:09,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc6d36a2/0cf62e207ebf4eb7bbcee6622edb4506 [2025-03-09 01:32:09,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:32:09,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:32:09,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:32:09,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:32:09,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:32:09,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:32:09" (1/1) ... [2025-03-09 01:32:09,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3668229c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:09, skipping insertion in model container [2025-03-09 01:32:09,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:32:09" (1/1) ... [2025-03-09 01:32:09,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:32:10,525 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,530 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,530 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,534 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,535 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,632 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,638 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:32:10,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:32:10,912 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:32:10,981 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-03-09 01:32:10,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-03-09 01:32:10,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-03-09 01:32:10,984 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-03-09 01:32:10,984 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-03-09 01:32:10,985 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-03-09 01:32:10,985 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-03-09 01:32:10,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-03-09 01:32:10,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-03-09 01:32:10,986 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-03-09 01:32:10,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-03-09 01:32:10,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-03-09 01:32:10,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-03-09 01:32:10,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-03-09 01:32:10,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-03-09 01:32:10,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-03-09 01:32:10,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-03-09 01:32:10,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-03-09 01:32:10,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-03-09 01:32:10,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-03-09 01:32:10,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-03-09 01:32:10,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-03-09 01:32:10,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-03-09 01:32:10,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-03-09 01:32:10,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-03-09 01:32:10,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-03-09 01:32:10,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-03-09 01:32:10,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-03-09 01:32:10,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-03-09 01:32:10,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-03-09 01:32:10,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-03-09 01:32:10,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-03-09 01:32:10,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-03-09 01:32:10,998 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-03-09 01:32:10,999 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-03-09 01:32:10,999 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-03-09 01:32:10,999 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-03-09 01:32:11,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-03-09 01:32:11,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-03-09 01:32:11,001 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-03-09 01:32:11,001 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-03-09 01:32:11,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-03-09 01:32:11,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-03-09 01:32:11,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-03-09 01:32:11,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-03-09 01:32:11,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-03-09 01:32:11,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-03-09 01:32:11,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-03-09 01:32:11,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-03-09 01:32:11,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-03-09 01:32:11,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-03-09 01:32:11,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-03-09 01:32:11,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-03-09 01:32:11,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-03-09 01:32:11,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-03-09 01:32:11,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-03-09 01:32:11,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-03-09 01:32:11,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-03-09 01:32:11,007 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-03-09 01:32:11,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-03-09 01:32:11,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-03-09 01:32:11,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-03-09 01:32:11,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-03-09 01:32:11,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-03-09 01:32:11,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-03-09 01:32:11,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-03-09 01:32:11,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-03-09 01:32:11,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-03-09 01:32:11,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-03-09 01:32:11,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-03-09 01:32:11,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-03-09 01:32:11,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-03-09 01:32:11,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-03-09 01:32:11,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-03-09 01:32:11,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-03-09 01:32:11,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-03-09 01:32:11,013 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-03-09 01:32:11,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-03-09 01:32:11,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-03-09 01:32:11,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-03-09 01:32:11,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-03-09 01:32:11,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-03-09 01:32:11,016 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-03-09 01:32:11,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:32:11,255 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:32:11,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11 WrapperNode [2025-03-09 01:32:11,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:32:11,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:32:11,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:32:11,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:32:11,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,355 INFO L138 Inliner]: procedures = 919, calls = 935, calls flagged for inlining = 830, calls inlined = 57, statements flattened = 476 [2025-03-09 01:32:11,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:32:11,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:32:11,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:32:11,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:32:11,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,407 INFO L175 MemorySlicer]: Split 27 memory accesses to 4 slices as follows [2, 7, 16, 2]. 59 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 1, 6, 0]. The 10 writes are split as follows [0, 3, 6, 1]. [2025-03-09 01:32:11,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:32:11,442 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:32:11,442 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:32:11,442 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:32:11,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (1/1) ... [2025-03-09 01:32:11,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:32:11,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:11,470 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) [2025-03-09 01:32:11,472 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 [2025-03-09 01:32:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 01:32:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 01:32:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:32:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure run [2025-03-09 01:32:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-09 01:32:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-09 01:32:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-09 01:32:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:32:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 01:32:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 01:32:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 01:32:11,492 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:32:11,651 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:32:11,652 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:32:12,129 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2285: havoc vatomic32_await_eq_acq_#t~ret174#1; [2025-03-09 01:32:12,129 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; [2025-03-09 01:32:12,129 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3655: havoc vatomicptr_read_rlx_#t~ret412#1.base, vatomicptr_read_rlx_#t~ret412#1.offset; [2025-03-09 01:32:12,129 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3660: havoc vatomicptr_read_acq_#t~ret413#1.base, vatomicptr_read_acq_#t~ret413#1.offset; [2025-03-09 01:32:12,129 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3700: havoc vatomicptr_cmpxchg_rel_#t~ret419#1.base, vatomicptr_cmpxchg_rel_#t~ret419#1.offset; [2025-03-09 01:32:12,211 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6026: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2025-03-09 01:32:12,212 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6026-1: SUMMARY for call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset); srcloc: null [2025-03-09 01:32:12,214 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:32:12,214 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:32:12,499 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:32:12,499 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:32:12,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:32:12 BoogieIcfgContainer [2025-03-09 01:32:12,499 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:32:12,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:32:12,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:32:12,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:32:12,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:32:09" (1/3) ... [2025-03-09 01:32:12,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6361ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:32:12, skipping insertion in model container [2025-03-09 01:32:12,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:11" (2/3) ... [2025-03-09 01:32:12,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6361ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:32:12, skipping insertion in model container [2025-03-09 01:32:12,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:32:12" (3/3) ... [2025-03-09 01:32:12,508 INFO L128 eAbstractionObserver]: Analyzing ICFG mcslock.i [2025-03-09 01:32:12,523 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:32:12,524 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mcslock.i that has 2 procedures, 157 locations, 1 initial locations, 23 loop locations, and 39 error locations. [2025-03-09 01:32:12,524 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:32:12,674 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-09 01:32:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 239 transitions, 485 flow [2025-03-09 01:32:12,792 INFO L124 PetriNetUnfolderBase]: 95/281 cut-off events. [2025-03-09 01:32:12,795 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 01:32:12,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 281 events. 95/281 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 926 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2025-03-09 01:32:12,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 239 transitions, 485 flow [2025-03-09 01:32:12,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 239 transitions, 485 flow [2025-03-09 01:32:12,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:32:12,830 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=None, 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;@24147831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:32:12,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2025-03-09 01:32:12,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:32:12,836 INFO L124 PetriNetUnfolderBase]: 10/21 cut-off events. [2025-03-09 01:32:12,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:32:12,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:12,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 01:32:12,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-03-09 01:32:12,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1377594283, now seen corresponding path program 1 times [2025-03-09 01:32:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:12,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84330473] [2025-03-09 01:32:12,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:12,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 01:32:12,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 01:32:12,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:12,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:12,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84330473] [2025-03-09 01:32:12,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84330473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:12,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:32:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882861754] [2025-03-09 01:32:12,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:12,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 01:32:12,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:13,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 01:32:13,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 01:32:13,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 239 [2025-03-09 01:32:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 239 transitions, 485 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2025-03-09 01:32:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 239 [2025-03-09 01:32:13,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:13,511 INFO L124 PetriNetUnfolderBase]: 1074/2405 cut-off events. [2025-03-09 01:32:13,511 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:32:13,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4532 conditions, 2405 events. 1074/2405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16106 event pairs, 930 based on Foata normal form. 954/2836 useless extension candidates. Maximal degree in co-relation 4474. Up to 2122 conditions per place. [2025-03-09 01:32:13,529 INFO L140 encePairwiseOnDemand]: 165/239 looper letters, 122 selfloop transitions, 0 changer transitions 0/163 dead transitions. [2025-03-09 01:32:13,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 163 transitions, 577 flow [2025-03-09 01:32:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 01:32:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 01:32:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 278 transitions. [2025-03-09 01:32:13,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815899581589958 [2025-03-09 01:32:13,545 INFO L175 Difference]: Start difference. First operand has 160 places, 239 transitions, 485 flow. Second operand 2 states and 278 transitions. [2025-03-09 01:32:13,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 163 transitions, 577 flow [2025-03-09 01:32:13,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 163 transitions, 577 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:32:13,554 INFO L231 Difference]: Finished difference. Result has 153 places, 163 transitions, 333 flow [2025-03-09 01:32:13,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=333, PETRI_PLACES=153, PETRI_TRANSITIONS=163} [2025-03-09 01:32:13,559 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -7 predicate places. [2025-03-09 01:32:13,559 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 163 transitions, 333 flow [2025-03-09 01:32:13,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2025-03-09 01:32:13,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:13,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:13,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:32:13,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-03-09 01:32:13,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 986800045, now seen corresponding path program 1 times [2025-03-09 01:32:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210472928] [2025-03-09 01:32:13,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:13,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:32:13,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:32:13,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:13,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210472928] [2025-03-09 01:32:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210472928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:32:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528410921] [2025-03-09 01:32:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:13,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:32:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:13,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:32:13,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:32:13,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 239 [2025-03-09 01:32:13,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 163 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2025-03-09 01:32:13,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:13,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 239 [2025-03-09 01:32:13,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:14,231 INFO L124 PetriNetUnfolderBase]: 1288/2897 cut-off events. [2025-03-09 01:32:14,231 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 01:32:14,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 2897 events. 1288/2897 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20378 event pairs, 932 based on Foata normal form. 0/2312 useless extension candidates. Maximal degree in co-relation 5429. Up to 2121 conditions per place. [2025-03-09 01:32:14,243 INFO L140 encePairwiseOnDemand]: 235/239 looper letters, 228 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2025-03-09 01:32:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 267 transitions, 1001 flow [2025-03-09 01:32:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:32:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:32:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2025-03-09 01:32:14,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4783821478382148 [2025-03-09 01:32:14,246 INFO L175 Difference]: Start difference. First operand has 153 places, 163 transitions, 333 flow. Second operand 3 states and 343 transitions. [2025-03-09 01:32:14,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 267 transitions, 1001 flow [2025-03-09 01:32:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 267 transitions, 1001 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:32:14,252 INFO L231 Difference]: Finished difference. Result has 153 places, 161 transitions, 333 flow [2025-03-09 01:32:14,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=153, PETRI_TRANSITIONS=161} [2025-03-09 01:32:14,253 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -7 predicate places. [2025-03-09 01:32:14,253 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 161 transitions, 333 flow [2025-03-09 01:32:14,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2025-03-09 01:32:14,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:14,255 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:14,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:32:14,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-03-09 01:32:14,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash 986800046, now seen corresponding path program 1 times [2025-03-09 01:32:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388031633] [2025-03-09 01:32:14,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:14,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:32:14,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:32:14,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:14,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:14,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388031633] [2025-03-09 01:32:14,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388031633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:14,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:32:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919474748] [2025-03-09 01:32:14,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:14,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:32:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:14,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:32:14,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:32:14,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 239 [2025-03-09 01:32:14,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 161 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2025-03-09 01:32:14,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:14,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 239 [2025-03-09 01:32:14,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:15,070 INFO L124 PetriNetUnfolderBase]: 1075/2475 cut-off events. [2025-03-09 01:32:15,071 INFO L125 PetriNetUnfolderBase]: For 99/102 co-relation queries the response was YES. [2025-03-09 01:32:15,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 2475 events. 1075/2475 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 17131 event pairs, 550 based on Foata normal form. 95/2057 useless extension candidates. Maximal degree in co-relation 4698. Up to 1407 conditions per place. [2025-03-09 01:32:15,109 INFO L140 encePairwiseOnDemand]: 232/239 looper letters, 330 selfloop transitions, 5 changer transitions 0/373 dead transitions. [2025-03-09 01:32:15,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 373 transitions, 1427 flow [2025-03-09 01:32:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:32:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:32:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2025-03-09 01:32:15,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5198744769874477 [2025-03-09 01:32:15,112 INFO L175 Difference]: Start difference. First operand has 153 places, 161 transitions, 333 flow. Second operand 4 states and 497 transitions. [2025-03-09 01:32:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 373 transitions, 1427 flow [2025-03-09 01:32:15,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 373 transitions, 1423 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:32:15,122 INFO L231 Difference]: Finished difference. Result has 155 places, 161 transitions, 351 flow [2025-03-09 01:32:15,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=155, PETRI_TRANSITIONS=161} [2025-03-09 01:32:15,123 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -5 predicate places. [2025-03-09 01:32:15,123 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 161 transitions, 351 flow [2025-03-09 01:32:15,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2025-03-09 01:32:15,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:15,124 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:15,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:32:15,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-03-09 01:32:15,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2094076516, now seen corresponding path program 1 times [2025-03-09 01:32:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393724447] [2025-03-09 01:32:15,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:15,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 01:32:15,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 01:32:15,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:15,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 01:32:15,159 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 01:32:15,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 01:32:15,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 01:32:15,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:15,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 01:32:15,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 01:32:15,196 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 01:32:15,196 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (71 of 72 remaining) [2025-03-09 01:32:15,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 72 remaining) [2025-03-09 01:32:15,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 72 remaining) [2025-03-09 01:32:15,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 72 remaining) [2025-03-09 01:32:15,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 72 remaining) [2025-03-09 01:32:15,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (66 of 72 remaining) [2025-03-09 01:32:15,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (65 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (64 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 72 remaining) [2025-03-09 01:32:15,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 72 remaining) [2025-03-09 01:32:15,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 72 remaining) [2025-03-09 01:32:15,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 72 remaining) [2025-03-09 01:32:15,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 72 remaining) [2025-03-09 01:32:15,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 72 remaining) [2025-03-09 01:32:15,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 72 remaining) [2025-03-09 01:32:15,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:32:15,206 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-09 01:32:15,209 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 01:32:15,209 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 01:32:15,348 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:32:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 423 transitions, 862 flow [2025-03-09 01:32:15,400 INFO L124 PetriNetUnfolderBase]: 181/540 cut-off events. [2025-03-09 01:32:15,400 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:32:15,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 540 events. 181/540 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2459 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 438. Up to 12 conditions per place. [2025-03-09 01:32:15,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 423 transitions, 862 flow [2025-03-09 01:32:15,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 423 transitions, 862 flow [2025-03-09 01:32:15,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:32:15,425 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=None, 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;@24147831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:32:15,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2025-03-09 01:32:15,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:32:15,429 INFO L124 PetriNetUnfolderBase]: 10/21 cut-off events. [2025-03-09 01:32:15,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:32:15,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:15,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 01:32:15,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2025-03-09 01:32:15,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1781265298, now seen corresponding path program 1 times [2025-03-09 01:32:15,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:15,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563153659] [2025-03-09 01:32:15,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:15,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:15,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 01:32:15,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 01:32:15,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:15,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563153659] [2025-03-09 01:32:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563153659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:15,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:15,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:32:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012874756] [2025-03-09 01:32:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:15,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 01:32:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:15,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 01:32:15,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 01:32:15,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 423 [2025-03-09 01:32:15,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 423 transitions, 862 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2025-03-09 01:32:15,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:15,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 423 [2025-03-09 01:32:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:36,942 INFO L124 PetriNetUnfolderBase]: 216410/341885 cut-off events. [2025-03-09 01:32:36,942 INFO L125 PetriNetUnfolderBase]: For 829/829 co-relation queries the response was YES. [2025-03-09 01:32:37,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659704 conditions, 341885 events. 216410/341885 cut-off events. For 829/829 co-relation queries the response was YES. Maximal size of possible extension queue 8626. Compared 3261387 event pairs, 188765 based on Foata normal form. 110905/364400 useless extension candidates. Maximal degree in co-relation 647486. Up to 317342 conditions per place. [2025-03-09 01:32:38,782 INFO L140 encePairwiseOnDemand]: 293/423 looper letters, 230 selfloop transitions, 0 changer transitions 0/291 dead transitions. [2025-03-09 01:32:38,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 291 transitions, 1058 flow [2025-03-09 01:32:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 01:32:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 01:32:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 482 transitions. [2025-03-09 01:32:38,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2025-03-09 01:32:38,784 INFO L175 Difference]: Start difference. First operand has 282 places, 423 transitions, 862 flow. Second operand 2 states and 482 transitions. [2025-03-09 01:32:38,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 291 transitions, 1058 flow [2025-03-09 01:32:38,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 291 transitions, 1058 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:32:38,789 INFO L231 Difference]: Finished difference. Result has 269 places, 291 transitions, 598 flow [2025-03-09 01:32:38,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=598, PETRI_PLACES=269, PETRI_TRANSITIONS=291} [2025-03-09 01:32:38,789 INFO L279 CegarLoopForPetriNet]: 282 programPoint places, -13 predicate places. [2025-03-09 01:32:38,790 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 291 transitions, 598 flow [2025-03-09 01:32:38,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2025-03-09 01:32:38,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:38,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:38,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:32:38,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2025-03-09 01:32:38,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1927364940, now seen corresponding path program 1 times [2025-03-09 01:32:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644376891] [2025-03-09 01:32:38,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:38,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:32:38,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:32:38,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:38,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:38,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644376891] [2025-03-09 01:32:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644376891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:32:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21439268] [2025-03-09 01:32:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:38,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:32:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:38,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:32:38,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:32:38,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 423 [2025-03-09 01:32:38,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 291 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2025-03-09 01:32:38,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:38,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 423 [2025-03-09 01:32:38,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand