./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/libvsync/ticketlock.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/ticketlock.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 8e9f7836ebdfb0849cf7f06257ab1fd414077ad21cfcb006a14459421df712fb --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:15:17,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:15:17,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:15:17,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:15:17,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:15:17,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:15:17,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:15:17,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:15:17,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:15:17,205 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:15:17,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:15:17,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:15:17,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:15:17,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:15:17,205 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:15:17,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:15:17,206 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:17,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:15:17,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:15:17,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:15:17,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:15:17,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:15:17,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:15:17,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:15:17,207 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 -> 8e9f7836ebdfb0849cf7f06257ab1fd414077ad21cfcb006a14459421df712fb [2025-02-06 13:15:17,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:15:17,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:15:17,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:15:17,436 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:15:17,436 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:15:17,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/ticketlock.i [2025-02-06 13:15:18,888 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/567cbdc03/1babb3a2bdbe4909b4c77d9476194c4c/FLAG9f5fcb7ec [2025-02-06 13:15:19,530 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:15:19,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/libvsync/ticketlock.i [2025-02-06 13:15:19,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/567cbdc03/1babb3a2bdbe4909b4c77d9476194c4c/FLAG9f5fcb7ec [2025-02-06 13:15:19,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/567cbdc03/1babb3a2bdbe4909b4c77d9476194c4c [2025-02-06 13:15:19,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:15:19,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:15:19,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:19,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:15:19,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:15:19,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ce362c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:19, skipping insertion in model container [2025-02-06 13:15:19,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:19" (1/1) ... [2025-02-06 13:15:19,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:15:21,472 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 13:15:21,479 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 13:15:21,479 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 13:15:21,485 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 13:15:21,486 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 13:15:22,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:22,069 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:15:22,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-02-06 13:15:22,221 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-02-06 13:15:22,222 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-02-06 13:15:22,222 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-02-06 13:15:22,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-02-06 13:15:22,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-02-06 13:15:22,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-02-06 13:15:22,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-02-06 13:15:22,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-02-06 13:15:22,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-02-06 13:15:22,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-02-06 13:15:22,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-02-06 13:15:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-02-06 13:15:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-02-06 13:15:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-02-06 13:15:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-02-06 13:15:22,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-02-06 13:15:22,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-02-06 13:15:22,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-02-06 13:15:22,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-02-06 13:15:22,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-02-06 13:15:22,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-02-06 13:15:22,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-02-06 13:15:22,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-02-06 13:15:22,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-02-06 13:15:22,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-02-06 13:15:22,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-02-06 13:15:22,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-02-06 13:15:22,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-02-06 13:15:22,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-02-06 13:15:22,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-02-06 13:15:22,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-02-06 13:15:22,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-02-06 13:15:22,234 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-02-06 13:15:22,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-02-06 13:15:22,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-02-06 13:15:22,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-02-06 13:15:22,235 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-02-06 13:15:22,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-02-06 13:15:22,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-02-06 13:15:22,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-02-06 13:15:22,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-02-06 13:15:22,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-02-06 13:15:22,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-02-06 13:15:22,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-02-06 13:15:22,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-02-06 13:15:22,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-02-06 13:15:22,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-02-06 13:15:22,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-02-06 13:15:22,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-02-06 13:15:22,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-02-06 13:15:22,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-02-06 13:15:22,248 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-02-06 13:15:22,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-02-06 13:15:22,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-02-06 13:15:22,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-02-06 13:15:22,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-02-06 13:15:22,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-02-06 13:15:22,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-02-06 13:15:22,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-02-06 13:15:22,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-02-06 13:15:22,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-02-06 13:15:22,272 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-02-06 13:15:22,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-02-06 13:15:22,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-02-06 13:15:22,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-02-06 13:15:22,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-02-06 13:15:22,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-02-06 13:15:22,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-02-06 13:15:22,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-02-06 13:15:22,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-02-06 13:15:22,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-02-06 13:15:22,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-02-06 13:15:22,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-02-06 13:15:22,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-02-06 13:15:22,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-02-06 13:15:22,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-02-06 13:15:22,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-02-06 13:15:22,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-02-06 13:15:22,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-02-06 13:15:22,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-02-06 13:15:22,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-02-06 13:15:22,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-02-06 13:15:22,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-02-06 13:15:22,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-02-06 13:15:22,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-02-06 13:15:22,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-02-06 13:15:22,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-02-06 13:15:22,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-02-06 13:15:22,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-02-06 13:15:22,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-02-06 13:15:22,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-02-06 13:15:22,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-02-06 13:15:22,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-02-06 13:15:22,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-02-06 13:15:22,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:22,654 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:15:22,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22 WrapperNode [2025-02-06 13:15:22,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:22,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:22,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:15:22,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:15:22,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,816 INFO L138 Inliner]: procedures = 918, calls = 924, calls flagged for inlining = 825, calls inlined = 41, statements flattened = 358 [2025-02-06 13:15:22,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:22,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:15:22,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:15:22,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:15:22,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,849 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 10, 2]. 71 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2, 0]. The 4 writes are split as follows [0, 3, 1]. [2025-02-06 13:15:22,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,859 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:15:22,877 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:15:22,877 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:15:22,877 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:15:22,878 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (1/1) ... [2025-02-06 13:15:22,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:22,926 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 13:15:22,955 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 13:15:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 13:15:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 13:15:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 13:15:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:15:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:15:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:15:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure run [2025-02-06 13:15:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 13:15:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 13:15:22,988 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 13:15:23,241 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:15:23,243 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:15:23,814 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1885: havoc vatomic32_read_rlx_#t~ret112#1; [2025-02-06 13:15:23,815 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1920: havoc vatomic32_cmpxchg_rlx_#t~ret117#1; [2025-02-06 13:15:23,815 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2285: havoc vatomic32_await_eq_acq_#t~ret174#1; [2025-02-06 13:15:23,818 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1890: havoc vatomic32_read_acq_#t~ret113#1; [2025-02-06 13:15:23,818 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4516: havoc vatomic32_get_inc_#t~ret577#1; [2025-02-06 13:15:23,819 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2115: havoc vatomic32_get_inc_rlx_#t~ret156#1; [2025-02-06 13:15:23,935 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6007: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2025-02-06 13:15:23,935 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 13:15:23,936 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:15:23,936 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:15:24,213 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:15:24,215 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:15:24,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:24 BoogieIcfgContainer [2025-02-06 13:15:24,216 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:15:24,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:15:24,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:15:24,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:15:24,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:15:19" (1/3) ... [2025-02-06 13:15:24,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3375740b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:24, skipping insertion in model container [2025-02-06 13:15:24,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:22" (2/3) ... [2025-02-06 13:15:24,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3375740b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:24, skipping insertion in model container [2025-02-06 13:15:24,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:24" (3/3) ... [2025-02-06 13:15:24,223 INFO L128 eAbstractionObserver]: Analyzing ICFG ticketlock.i [2025-02-06 13:15:24,235 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:15:24,237 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ticketlock.i that has 2 procedures, 146 locations, 1 initial locations, 40 loop locations, and 23 error locations. [2025-02-06 13:15:24,238 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:15:24,343 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 13:15:24,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 227 transitions, 461 flow [2025-02-06 13:15:24,486 INFO L124 PetriNetUnfolderBase]: 95/275 cut-off events. [2025-02-06 13:15:24,491 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 13:15:24,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 275 events. 95/275 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1016 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 209. Up to 6 conditions per place. [2025-02-06 13:15:24,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 227 transitions, 461 flow [2025-02-06 13:15:24,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 227 transitions, 461 flow [2025-02-06 13:15:24,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:24,550 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;@3ca6995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:24,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2025-02-06 13:15:24,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:24,569 INFO L124 PetriNetUnfolderBase]: 6/17 cut-off events. [2025-02-06 13:15:24,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:24,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:24,570 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 13:15:24,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 13:15:24,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1054885906, now seen corresponding path program 1 times [2025-02-06 13:15:24,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:24,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782663775] [2025-02-06 13:15:24,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:24,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 13:15:24,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 13:15:24,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:24,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:24,744 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 13:15:24,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782663775] [2025-02-06 13:15:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782663775] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:24,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:24,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694936642] [2025-02-06 13:15:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:24,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 13:15:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:24,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 13:15:24,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 13:15:24,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 227 [2025-02-06 13:15:24,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 227 transitions, 461 flow. Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 13:15:24,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:24,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 227 [2025-02-06 13:15:24,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:25,237 INFO L124 PetriNetUnfolderBase]: 495/1517 cut-off events. [2025-02-06 13:15:25,238 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:15:25,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2499 conditions, 1517 events. 495/1517 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10733 event pairs, 414 based on Foata normal form. 1154/2407 useless extension candidates. Maximal degree in co-relation 2436. Up to 977 conditions per place. [2025-02-06 13:15:25,250 INFO L140 encePairwiseOnDemand]: 151/227 looper letters, 68 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2025-02-06 13:15:25,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 149 transitions, 441 flow [2025-02-06 13:15:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 13:15:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 13:15:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 306 transitions. [2025-02-06 13:15:25,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6740088105726872 [2025-02-06 13:15:25,272 INFO L175 Difference]: Start difference. First operand has 149 places, 227 transitions, 461 flow. Second operand 2 states and 306 transitions. [2025-02-06 13:15:25,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 149 transitions, 441 flow [2025-02-06 13:15:25,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 441 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:15:25,291 INFO L231 Difference]: Finished difference. Result has 144 places, 149 transitions, 305 flow [2025-02-06 13:15:25,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=305, PETRI_PLACES=144, PETRI_TRANSITIONS=149} [2025-02-06 13:15:25,299 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, -5 predicate places. [2025-02-06 13:15:25,299 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 149 transitions, 305 flow [2025-02-06 13:15:25,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 13:15:25,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:25,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:25,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:15:25,302 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 13:15:25,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash 49906765, now seen corresponding path program 1 times [2025-02-06 13:15:25,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:25,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886656460] [2025-02-06 13:15:25,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:25,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:25,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:25,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:25,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:25,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:25,530 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 13:15:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886656460] [2025-02-06 13:15:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886656460] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:25,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:25,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847007109] [2025-02-06 13:15:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:25,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:25,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:25,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:25,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 227 [2025-02-06 13:15:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 149 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 13:15:25,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:25,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 227 [2025-02-06 13:15:25,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:26,198 INFO L124 PetriNetUnfolderBase]: 603/1775 cut-off events. [2025-02-06 13:15:26,200 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 13:15:26,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1775 events. 603/1775 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12975 event pairs, 414 based on Foata normal form. 0/1479 useless extension candidates. Maximal degree in co-relation 2958. Up to 976 conditions per place. [2025-02-06 13:15:26,222 INFO L140 encePairwiseOnDemand]: 223/227 looper letters, 122 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2025-02-06 13:15:26,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 201 transitions, 657 flow [2025-02-06 13:15:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2025-02-06 13:15:26,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5242290748898678 [2025-02-06 13:15:26,228 INFO L175 Difference]: Start difference. First operand has 144 places, 149 transitions, 305 flow. Second operand 3 states and 357 transitions. [2025-02-06 13:15:26,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 201 transitions, 657 flow [2025-02-06 13:15:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 201 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:15:26,233 INFO L231 Difference]: Finished difference. Result has 144 places, 147 transitions, 305 flow [2025-02-06 13:15:26,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=144, PETRI_TRANSITIONS=147} [2025-02-06 13:15:26,238 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, -5 predicate places. [2025-02-06 13:15:26,238 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 147 transitions, 305 flow [2025-02-06 13:15:26,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 13:15:26,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:26,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:26,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:15:26,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 13:15:26,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash 49906766, now seen corresponding path program 1 times [2025-02-06 13:15:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:26,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272115888] [2025-02-06 13:15:26,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:26,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:26,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:26,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:26,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:26,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:26,518 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 13:15:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272115888] [2025-02-06 13:15:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272115888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:26,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:26,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:26,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858841067] [2025-02-06 13:15:26,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:26,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:15:26,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:26,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:15:26,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:15:26,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 227 [2025-02-06 13:15:26,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 147 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 13:15:26,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:26,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 227 [2025-02-06 13:15:26,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:27,051 INFO L124 PetriNetUnfolderBase]: 494/2037 cut-off events. [2025-02-06 13:15:27,052 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-02-06 13:15:27,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 2037 events. 494/2037 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16519 event pairs, 46 based on Foata normal form. 48/1781 useless extension candidates. Maximal degree in co-relation 3063. Up to 612 conditions per place. [2025-02-06 13:15:27,060 INFO L140 encePairwiseOnDemand]: 220/227 looper letters, 172 selfloop transitions, 5 changer transitions 0/255 dead transitions. [2025-02-06 13:15:27,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 255 transitions, 875 flow [2025-02-06 13:15:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:15:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:15:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 499 transitions. [2025-02-06 13:15:27,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5495594713656388 [2025-02-06 13:15:27,065 INFO L175 Difference]: Start difference. First operand has 144 places, 147 transitions, 305 flow. Second operand 4 states and 499 transitions. [2025-02-06 13:15:27,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 255 transitions, 875 flow [2025-02-06 13:15:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 255 transitions, 871 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:27,094 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 323 flow [2025-02-06 13:15:27,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2025-02-06 13:15:27,108 INFO L279 CegarLoopForPetriNet]: 149 programPoint places, -3 predicate places. [2025-02-06 13:15:27,108 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 323 flow [2025-02-06 13:15:27,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 13:15:27,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:27,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:27,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:15:27,109 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2025-02-06 13:15:27,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash -115953921, now seen corresponding path program 1 times [2025-02-06 13:15:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:27,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521086980] [2025-02-06 13:15:27,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:27,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:15:27,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:27,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:27,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:27,151 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 13:15:27,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:15:27,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:27,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:27,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:27,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 13:15:27,197 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 13:15:27,198 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2025-02-06 13:15:27,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2025-02-06 13:15:27,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (34 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (33 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (32 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 40 remaining) [2025-02-06 13:15:27,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 40 remaining) [2025-02-06 13:15:27,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2025-02-06 13:15:27,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2025-02-06 13:15:27,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2025-02-06 13:15:27,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 40 remaining) [2025-02-06 13:15:27,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:15:27,203 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 13:15:27,205 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 13:15:27,206 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 13:15:27,452 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 13:15:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 389 transitions, 794 flow [2025-02-06 13:15:27,493 INFO L124 PetriNetUnfolderBase]: 179/520 cut-off events. [2025-02-06 13:15:27,493 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 13:15:27,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 520 events. 179/520 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2460 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 402. Up to 12 conditions per place. [2025-02-06 13:15:27,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 389 transitions, 794 flow [2025-02-06 13:15:27,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 389 transitions, 794 flow [2025-02-06 13:15:27,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:27,516 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;@3ca6995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:27,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2025-02-06 13:15:27,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:27,517 INFO L124 PetriNetUnfolderBase]: 6/17 cut-off events. [2025-02-06 13:15:27,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:27,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:27,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 13:15:27,517 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2025-02-06 13:15:27,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1426110551, now seen corresponding path program 1 times [2025-02-06 13:15:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945570107] [2025-02-06 13:15:27,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:27,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 13:15:27,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 13:15:27,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:27,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:27,535 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 13:15:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945570107] [2025-02-06 13:15:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945570107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:27,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138535100] [2025-02-06 13:15:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:27,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 13:15:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:27,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 13:15:27,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 13:15:27,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 389 [2025-02-06 13:15:27,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 389 transitions, 794 flow. Second operand has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 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 13:15:27,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:27,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 389 [2025-02-06 13:15:27,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:34,755 INFO L124 PetriNetUnfolderBase]: 49573/94986 cut-off events. [2025-02-06 13:15:34,757 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2025-02-06 13:15:34,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167749 conditions, 94986 events. 49573/94986 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 3373. Compared 1025016 event pairs, 41860 based on Foata normal form. 74358/145924 useless extension candidates. Maximal degree in co-relation 164636. Up to 72521 conditions per place. [2025-02-06 13:15:35,413 INFO L140 encePairwiseOnDemand]: 257/389 looper letters, 124 selfloop transitions, 0 changer transitions 0/255 dead transitions. [2025-02-06 13:15:35,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 255 transitions, 774 flow [2025-02-06 13:15:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 13:15:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 13:15:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 518 transitions. [2025-02-06 13:15:35,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6658097686375322 [2025-02-06 13:15:35,415 INFO L175 Difference]: Start difference. First operand has 252 places, 389 transitions, 794 flow. Second operand 2 states and 518 transitions. [2025-02-06 13:15:35,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 255 transitions, 774 flow [2025-02-06 13:15:35,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 255 transitions, 774 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:15:35,420 INFO L231 Difference]: Finished difference. Result has 243 places, 255 transitions, 526 flow [2025-02-06 13:15:35,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=526, PETRI_PLACES=243, PETRI_TRANSITIONS=255} [2025-02-06 13:15:35,421 INFO L279 CegarLoopForPetriNet]: 252 programPoint places, -9 predicate places. [2025-02-06 13:15:35,421 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 255 transitions, 526 flow [2025-02-06 13:15:35,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 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 13:15:35,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:35,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:35,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:15:35,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2025-02-06 13:15:35,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1803413357, now seen corresponding path program 1 times [2025-02-06 13:15:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23501105] [2025-02-06 13:15:35,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:35,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:35,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:35,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:35,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:35,462 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 13:15:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23501105] [2025-02-06 13:15:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23501105] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:35,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154185833] [2025-02-06 13:15:35,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:35,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:35,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:35,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:35,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 389 [2025-02-06 13:15:35,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 255 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 13:15:35,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:35,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 389 [2025-02-06 13:15:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:43,801 INFO L124 PetriNetUnfolderBase]: 59887/112155 cut-off events. [2025-02-06 13:15:43,801 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2025-02-06 13:15:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199794 conditions, 112155 events. 59887/112155 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 3869. Compared 1202635 event pairs, 41814 based on Foata normal form. 0/84936 useless extension candidates. Maximal degree in co-relation 199789. Up to 72419 conditions per place. [2025-02-06 13:15:44,466 INFO L140 encePairwiseOnDemand]: 385/389 looper letters, 232 selfloop transitions, 2 changer transitions 0/361 dead transitions. [2025-02-06 13:15:44,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 361 transitions, 1206 flow [2025-02-06 13:15:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2025-02-06 13:15:44,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5287060839760068 [2025-02-06 13:15:44,470 INFO L175 Difference]: Start difference. First operand has 243 places, 255 transitions, 526 flow. Second operand 3 states and 617 transitions. [2025-02-06 13:15:44,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 361 transitions, 1206 flow [2025-02-06 13:15:44,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 361 transitions, 1206 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:15:44,474 INFO L231 Difference]: Finished difference. Result has 243 places, 253 transitions, 526 flow [2025-02-06 13:15:44,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=243, PETRI_TRANSITIONS=253} [2025-02-06 13:15:44,475 INFO L279 CegarLoopForPetriNet]: 252 programPoint places, -9 predicate places. [2025-02-06 13:15:44,476 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 253 transitions, 526 flow [2025-02-06 13:15:44,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 13:15:44,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:44,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:44,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:15:44,476 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2025-02-06 13:15:44,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1803413358, now seen corresponding path program 1 times [2025-02-06 13:15:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257250676] [2025-02-06 13:15:44,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:44,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:44,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:44,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:44,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:44,580 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 13:15:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257250676] [2025-02-06 13:15:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257250676] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160996272] [2025-02-06 13:15:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:44,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:15:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:44,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:15:44,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:15:44,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 389 [2025-02-06 13:15:44,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 253 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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 13:15:44,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:44,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 389 [2025-02-06 13:15:44,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:52,164 INFO L124 PetriNetUnfolderBase]: 54702/103736 cut-off events. [2025-02-06 13:15:52,165 INFO L125 PetriNetUnfolderBase]: For 2649/2659 co-relation queries the response was YES. [2025-02-06 13:15:52,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186191 conditions, 103736 events. 54702/103736 cut-off events. For 2649/2659 co-relation queries the response was YES. Maximal size of possible extension queue 3490. Compared 1108811 event pairs, 19861 based on Foata normal form. 0/79624 useless extension candidates. Maximal degree in co-relation 186185. Up to 44976 conditions per place. [2025-02-06 13:15:52,732 INFO L140 encePairwiseOnDemand]: 382/389 looper letters, 337 selfloop transitions, 5 changer transitions 0/469 dead transitions. [2025-02-06 13:15:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 469 transitions, 1642 flow [2025-02-06 13:15:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:15:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:15:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 860 transitions. [2025-02-06 13:15:52,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526992287917738 [2025-02-06 13:15:52,735 INFO L175 Difference]: Start difference. First operand has 243 places, 253 transitions, 526 flow. Second operand 4 states and 860 transitions. [2025-02-06 13:15:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 469 transitions, 1642 flow [2025-02-06 13:15:52,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 469 transitions, 1638 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:52,780 INFO L231 Difference]: Finished difference. Result has 245 places, 253 transitions, 544 flow [2025-02-06 13:15:52,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=245, PETRI_TRANSITIONS=253} [2025-02-06 13:15:52,781 INFO L279 CegarLoopForPetriNet]: 252 programPoint places, -7 predicate places. [2025-02-06 13:15:52,781 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 253 transitions, 544 flow [2025-02-06 13:15:52,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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 13:15:52,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:52,781 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:52,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 13:15:52,781 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2025-02-06 13:15:52,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash -430062426, now seen corresponding path program 1 times [2025-02-06 13:15:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430985153] [2025-02-06 13:15:52,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:52,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:15:52,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:15:52,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:52,809 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 13:15:52,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:15:52,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:15:52,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:52,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 13:15:52,842 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 13:15:52,842 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 56 remaining) [2025-02-06 13:15:52,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 56 remaining) [2025-02-06 13:15:52,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (50 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (49 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (48 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 56 remaining) [2025-02-06 13:15:52,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 56 remaining) [2025-02-06 13:15:52,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 56 remaining) [2025-02-06 13:15:52,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 56 remaining) [2025-02-06 13:15:52,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 56 remaining) [2025-02-06 13:15:52,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 56 remaining) [2025-02-06 13:15:52,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 56 remaining) [2025-02-06 13:15:52,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 56 remaining) [2025-02-06 13:15:52,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 13:15:52,846 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 13:15:52,847 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 13:15:52,847 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 13:15:52,933 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 13:15:52,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 551 transitions, 1129 flow [2025-02-06 13:15:53,027 INFO L124 PetriNetUnfolderBase]: 282/832 cut-off events. [2025-02-06 13:15:53,027 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 13:15:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 832 events. 282/832 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4379 event pairs, 1 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 630. Up to 24 conditions per place. [2025-02-06 13:15:53,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 551 transitions, 1129 flow [2025-02-06 13:15:53,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 551 transitions, 1129 flow [2025-02-06 13:15:53,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:53,064 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;@3ca6995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:53,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2025-02-06 13:15:53,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:53,066 INFO L124 PetriNetUnfolderBase]: 6/17 cut-off events. [2025-02-06 13:15:53,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:53,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:53,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 13:15:53,067 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)] === [2025-02-06 13:15:53,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1951932606, now seen corresponding path program 1 times [2025-02-06 13:15:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659914811] [2025-02-06 13:15:53,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:53,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 13:15:53,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 13:15:53,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:53,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:53,080 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 13:15:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659914811] [2025-02-06 13:15:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659914811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:15:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587364909] [2025-02-06 13:15:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:53,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 13:15:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:53,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 13:15:53,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 13:15:53,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 551 [2025-02-06 13:15:53,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 551 transitions, 1129 flow. Second operand has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 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 13:15:53,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:53,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 551 [2025-02-06 13:15:53,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand