./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/libvsync/semaphore.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/libvsync/semaphore.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:15:15,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:15:15,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:15:15,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:15:15,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:15:15,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:15:15,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:15:15,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:15:15,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:15:15,225 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:15:15,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:15:15,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:15:15,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:15:15,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:15:15,226 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:15:15,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:15:15,226 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:15:15,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:15:15,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:15,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:15:15,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:15:15,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:15:15,229 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 [2025-02-06 13:15:15,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:15:15,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:15:15,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:15:15,493 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:15:15,493 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:15:15,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/semaphore.i [2025-02-06 13:15:16,715 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8b67d886/e0585174e5e84b129b124e29f39e05e3/FLAGd4cc09a74 [2025-02-06 13:15:17,107 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:15:17,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/libvsync/semaphore.i [2025-02-06 13:15:17,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8b67d886/e0585174e5e84b129b124e29f39e05e3/FLAGd4cc09a74 [2025-02-06 13:15:17,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8b67d886/e0585174e5e84b129b124e29f39e05e3 [2025-02-06 13:15:17,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:15:17,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:15:17,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:17,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:15:17,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:15:17,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:17" (1/1) ... [2025-02-06 13:15:17,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536a749f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:17, skipping insertion in model container [2025-02-06 13:15:17,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:17" (1/1) ... [2025-02-06 13:15:17,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:15:18,425 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:15:18,436 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:15:18,436 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:15:18,443 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:15:18,446 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:15:18,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:18,779 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:15:18,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-02-06 13:15:18,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-02-06 13:15:18,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-02-06 13:15:18,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-02-06 13:15:18,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-02-06 13:15:18,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-02-06 13:15:18,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-02-06 13:15:18,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-02-06 13:15:18,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-02-06 13:15:18,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-02-06 13:15:18,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-02-06 13:15:18,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-02-06 13:15:18,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-02-06 13:15:18,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-02-06 13:15:18,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-02-06 13:15:18,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-02-06 13:15:18,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-02-06 13:15:18,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-02-06 13:15:18,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-02-06 13:15:18,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-02-06 13:15:18,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-02-06 13:15:18,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-02-06 13:15:18,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-02-06 13:15:18,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-02-06 13:15:18,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-02-06 13:15:18,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-02-06 13:15:18,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-02-06 13:15:18,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-02-06 13:15:18,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-02-06 13:15:18,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-02-06 13:15:18,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-02-06 13:15:18,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-02-06 13:15:18,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-02-06 13:15:18,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-02-06 13:15:18,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-02-06 13:15:18,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-02-06 13:15:18,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-02-06 13:15:18,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-02-06 13:15:18,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-02-06 13:15:18,873 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-02-06 13:15:18,873 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-02-06 13:15:18,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-02-06 13:15:18,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-02-06 13:15:18,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-02-06 13:15:18,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-02-06 13:15:18,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-02-06 13:15:18,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-02-06 13:15:18,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-02-06 13:15:18,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-02-06 13:15:18,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-02-06 13:15:18,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-02-06 13:15:18,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-02-06 13:15:18,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-02-06 13:15:18,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-02-06 13:15:18,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-02-06 13:15:18,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-02-06 13:15:18,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-02-06 13:15:18,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-02-06 13:15:18,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-02-06 13:15:18,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-02-06 13:15:18,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-02-06 13:15:18,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-02-06 13:15:18,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-02-06 13:15:18,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-02-06 13:15:18,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-02-06 13:15:18,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-02-06 13:15:18,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-02-06 13:15:18,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-02-06 13:15:18,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-02-06 13:15:18,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-02-06 13:15:18,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-02-06 13:15:18,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-02-06 13:15:18,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-02-06 13:15:18,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-02-06 13:15:18,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-02-06 13:15:18,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-02-06 13:15:18,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-02-06 13:15:18,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-02-06 13:15:18,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-02-06 13:15:18,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-02-06 13:15:18,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-02-06 13:15:18,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-02-06 13:15:18,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-02-06 13:15:18,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-02-06 13:15:18,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-02-06 13:15:18,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-02-06 13:15:18,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-02-06 13:15:18,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-02-06 13:15:18,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-02-06 13:15:18,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-02-06 13:15:18,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:19,187 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:15:19,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19 WrapperNode [2025-02-06 13:15:19,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:19,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:19,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:15:19,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:15:19,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,285 INFO L138 Inliner]: procedures = 921, calls = 921, calls flagged for inlining = 820, calls inlined = 50, statements flattened = 466 [2025-02-06 13:15:19,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:19,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:15:19,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:15:19,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:15:19,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,317 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 3, 14]. 74 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 7 writes are split as follows [0, 2, 5]. [2025-02-06 13:15:19,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,334 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:15:19,349 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:15:19,349 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:15:19,349 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:15:19,349 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:19,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:19,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:15:19,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:15:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2025-02-06 13:15:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2025-02-06 13:15:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 13:15:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 13:15:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 13:15:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:15:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:15:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2025-02-06 13:15:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 13:15:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 13:15:19,406 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:15:19,552 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:15:19,553 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:15:19,800 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2425: havoc vatomic32_await_ge_sub_acq_#t~ret202#1; [2025-02-06 13:15:19,917 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6007: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2025-02-06 13:15:19,918 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6007-1: SUMMARY for call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset); srcloc: null [2025-02-06 13:15:20,051 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2425: havoc vatomic32_await_ge_sub_acq_#t~ret202#1; [2025-02-06 13:15:20,052 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:15:20,052 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:15:20,292 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:15:20,293 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:15:20,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:20 BoogieIcfgContainer [2025-02-06 13:15:20,293 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:15:20,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:15:20,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:15:20,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:15:20,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:15:17" (1/3) ... [2025-02-06 13:15:20,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6732d143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:20, skipping insertion in model container [2025-02-06 13:15:20,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19" (2/3) ... [2025-02-06 13:15:20,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6732d143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:20, skipping insertion in model container [2025-02-06 13:15:20,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:20" (3/3) ... [2025-02-06 13:15:20,305 INFO L128 eAbstractionObserver]: Analyzing ICFG semaphore.i [2025-02-06 13:15:20,318 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:15:20,319 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG semaphore.i that has 3 procedures, 206 locations, 1 initial locations, 53 loop locations, and 36 error locations. [2025-02-06 13:15:20,319 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:15:20,431 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 13:15:20,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 315 transitions, 644 flow [2025-02-06 13:15:20,615 INFO L124 PetriNetUnfolderBase]: 200/601 cut-off events. [2025-02-06 13:15:20,618 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:15:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 601 events. 200/601 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3145 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 345. Up to 12 conditions per place. [2025-02-06 13:15:20,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 315 transitions, 644 flow [2025-02-06 13:15:20,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 315 transitions, 644 flow [2025-02-06 13:15:20,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:20,663 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;@50db4544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:20,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2025-02-06 13:15:20,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:20,670 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-02-06 13:15:20,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:20,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:20,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-02-06 13:15:20,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-02-06 13:15:20,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash 46480, now seen corresponding path program 1 times [2025-02-06 13:15:20,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:20,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028868939] [2025-02-06 13:15:20,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:20,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 13:15:20,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 13:15:20,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:20,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028868939] [2025-02-06 13:15:20,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028868939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:20,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:20,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930692975] [2025-02-06 13:15:20,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:20,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:20,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:20,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:20,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 315 [2025-02-06 13:15:20,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 315 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2025-02-06 13:15:20,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:20,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 315 [2025-02-06 13:15:20,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:24,726 INFO L124 PetriNetUnfolderBase]: 22702/45619 cut-off events. [2025-02-06 13:15:24,731 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-02-06 13:15:24,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79562 conditions, 45619 events. 22702/45619 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1500. Compared 458718 event pairs, 19589 based on Foata normal form. 36212/70872 useless extension candidates. Maximal degree in co-relation 77541. Up to 33804 conditions per place. [2025-02-06 13:15:25,011 INFO L140 encePairwiseOnDemand]: 206/315 looper letters, 90 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2025-02-06 13:15:25,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 205 transitions, 608 flow [2025-02-06 13:15:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2025-02-06 13:15:25,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5693121693121693 [2025-02-06 13:15:25,028 INFO L175 Difference]: Start difference. First operand has 212 places, 315 transitions, 644 flow. Second operand 3 states and 538 transitions. [2025-02-06 13:15:25,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 205 transitions, 608 flow [2025-02-06 13:15:25,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 205 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:15:25,046 INFO L231 Difference]: Finished difference. Result has 202 places, 205 transitions, 428 flow [2025-02-06 13:15:25,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=202, PETRI_TRANSITIONS=205} [2025-02-06 13:15:25,051 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -10 predicate places. [2025-02-06 13:15:25,054 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 205 transitions, 428 flow [2025-02-06 13:15:25,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2025-02-06 13:15:25,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:25,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-02-06 13:15:25,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:15:25,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-02-06 13:15:25,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash 46481, now seen corresponding path program 1 times [2025-02-06 13:15:25,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017413574] [2025-02-06 13:15:25,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:25,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 13:15:25,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 13:15:25,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:25,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:25,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:25,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017413574] [2025-02-06 13:15:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017413574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:25,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:25,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:25,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304785604] [2025-02-06 13:15:25,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:25,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:25,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:25,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:25,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:25,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 315 [2025-02-06 13:15:25,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 205 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2025-02-06 13:15:25,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:25,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 315 [2025-02-06 13:15:25,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:28,407 INFO L124 PetriNetUnfolderBase]: 22702/45618 cut-off events. [2025-02-06 13:15:28,408 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-02-06 13:15:28,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79563 conditions, 45618 events. 22702/45618 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1500. Compared 458897 event pairs, 19589 based on Foata normal form. 0/34660 useless extension candidates. Maximal degree in co-relation 79550. Up to 33804 conditions per place. [2025-02-06 13:15:28,624 INFO L140 encePairwiseOnDemand]: 312/315 looper letters, 89 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2025-02-06 13:15:28,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 204 transitions, 608 flow [2025-02-06 13:15:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2025-02-06 13:15:28,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4560846560846561 [2025-02-06 13:15:28,626 INFO L175 Difference]: Start difference. First operand has 202 places, 205 transitions, 428 flow. Second operand 3 states and 431 transitions. [2025-02-06 13:15:28,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 204 transitions, 608 flow [2025-02-06 13:15:28,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 204 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:28,635 INFO L231 Difference]: Finished difference. Result has 201 places, 204 transitions, 426 flow [2025-02-06 13:15:28,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=201, PETRI_TRANSITIONS=204} [2025-02-06 13:15:28,637 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -11 predicate places. [2025-02-06 13:15:28,637 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 204 transitions, 426 flow [2025-02-06 13:15:28,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2025-02-06 13:15:28,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:28,637 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:28,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:15:28,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-02-06 13:15:28,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -512569146, now seen corresponding path program 1 times [2025-02-06 13:15:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940205126] [2025-02-06 13:15:28,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:28,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 13:15:28,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 13:15:28,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:28,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:28,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940205126] [2025-02-06 13:15:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940205126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889659377] [2025-02-06 13:15:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:28,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:28,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:28,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:28,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 315 [2025-02-06 13:15:28,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 204 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2025-02-06 13:15:28,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:28,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 315 [2025-02-06 13:15:28,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:32,502 INFO L124 PetriNetUnfolderBase]: 27507/53753 cut-off events. [2025-02-06 13:15:32,503 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2025-02-06 13:15:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94742 conditions, 53753 events. 27507/53753 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 540005 event pairs, 19600 based on Foata normal form. 0/41116 useless extension candidates. Maximal degree in co-relation 94729. Up to 33744 conditions per place. [2025-02-06 13:15:32,736 INFO L140 encePairwiseOnDemand]: 310/315 looper letters, 161 selfloop transitions, 2 changer transitions 0/270 dead transitions. [2025-02-06 13:15:32,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 270 transitions, 884 flow [2025-02-06 13:15:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2025-02-06 13:15:32,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153439153439153 [2025-02-06 13:15:32,738 INFO L175 Difference]: Start difference. First operand has 201 places, 204 transitions, 426 flow. Second operand 3 states and 487 transitions. [2025-02-06 13:15:32,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 270 transitions, 884 flow [2025-02-06 13:15:32,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 270 transitions, 880 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:32,744 INFO L231 Difference]: Finished difference. Result has 198 places, 201 transitions, 420 flow [2025-02-06 13:15:32,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=198, PETRI_TRANSITIONS=201} [2025-02-06 13:15:32,744 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -14 predicate places. [2025-02-06 13:15:32,745 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 201 transitions, 420 flow [2025-02-06 13:15:32,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2025-02-06 13:15:32,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:32,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:32,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:15:32,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-02-06 13:15:32,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash -512569145, now seen corresponding path program 1 times [2025-02-06 13:15:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263770091] [2025-02-06 13:15:32,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:32,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 13:15:32,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 13:15:32,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:32,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263770091] [2025-02-06 13:15:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263770091] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:32,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128390932] [2025-02-06 13:15:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:32,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:15:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:32,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:15:32,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:15:32,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 315 [2025-02-06 13:15:32,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 201 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 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) [2025-02-06 13:15:32,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:32,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 315 [2025-02-06 13:15:32,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:35,971 INFO L124 PetriNetUnfolderBase]: 22655/46791 cut-off events. [2025-02-06 13:15:35,971 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2025-02-06 13:15:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81666 conditions, 46791 events. 22655/46791 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 477981 event pairs, 7429 based on Foata normal form. 32/36121 useless extension candidates. Maximal degree in co-relation 80086. Up to 26442 conditions per place. [2025-02-06 13:15:36,319 INFO L140 encePairwiseOnDemand]: 308/315 looper letters, 190 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2025-02-06 13:15:36,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 304 transitions, 1016 flow [2025-02-06 13:15:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:15:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:15:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2025-02-06 13:15:36,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-02-06 13:15:36,327 INFO L175 Difference]: Start difference. First operand has 198 places, 201 transitions, 420 flow. Second operand 4 states and 645 transitions. [2025-02-06 13:15:36,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 304 transitions, 1016 flow [2025-02-06 13:15:36,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 304 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:36,361 INFO L231 Difference]: Finished difference. Result has 200 places, 201 transitions, 438 flow [2025-02-06 13:15:36,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=200, PETRI_TRANSITIONS=201} [2025-02-06 13:15:36,362 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -12 predicate places. [2025-02-06 13:15:36,362 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 201 transitions, 438 flow [2025-02-06 13:15:36,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 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) [2025-02-06 13:15:36,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:36,363 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:36,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:15:36,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-02-06 13:15:36,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -736785202, now seen corresponding path program 1 times [2025-02-06 13:15:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:36,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493165705] [2025-02-06 13:15:36,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:36,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:15:36,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:36,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:36,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:36,386 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 13:15:36,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:15:36,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:36,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:36,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:36,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 13:15:36,408 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 13:15:36,408 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (62 of 63 remaining) [2025-02-06 13:15:36,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 63 remaining) [2025-02-06 13:15:36,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2025-02-06 13:15:36,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2025-02-06 13:15:36,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4ASSERT_VIOLATIONMEMORY_LEAK (53 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2025-02-06 13:15:36,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (40 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (39 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (38 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4ASSERT_VIOLATIONMEMORY_LEAK (16 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2025-02-06 13:15:36,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2025-02-06 13:15:36,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2025-02-06 13:15:36,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2025-02-06 13:15:36,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2025-02-06 13:15:36,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:15:36,413 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-06 13:15:36,414 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 13:15:36,414 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 13:15:36,519 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 13:15:36,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 541 transitions, 1114 flow [2025-02-06 13:15:36,836 INFO L124 PetriNetUnfolderBase]: 559/1693 cut-off events. [2025-02-06 13:15:36,836 INFO L125 PetriNetUnfolderBase]: For 40/47 co-relation queries the response was YES. [2025-02-06 13:15:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 1693 events. 559/1693 cut-off events. For 40/47 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10934 event pairs, 1 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 1034. Up to 48 conditions per place. [2025-02-06 13:15:36,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 541 transitions, 1114 flow [2025-02-06 13:15:36,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 541 transitions, 1114 flow [2025-02-06 13:15:36,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:36,876 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;@50db4544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:36,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2025-02-06 13:15:36,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:36,877 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-02-06 13:15:36,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:36,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:36,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-02-06 13:15:36,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2025-02-06 13:15:36,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash 63760, now seen corresponding path program 1 times [2025-02-06 13:15:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:36,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661029344] [2025-02-06 13:15:36,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:36,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 13:15:36,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 13:15:36,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:36,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661029344] [2025-02-06 13:15:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661029344] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:36,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756515871] [2025-02-06 13:15:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:36,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:36,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:36,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:36,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 541 [2025-02-06 13:15:36,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 541 transitions, 1114 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2025-02-06 13:15:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 541 [2025-02-06 13:15:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand