./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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/ldv-races/race-3_1-container_of-global.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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:53:22,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:53:22,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:53:22,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:53:22,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:53:22,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:53:22,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:53:22,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:53:22,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:53:22,162 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:53:22,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:53:22,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:53:22,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:53:22,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:53:22,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:53:22,164 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:22,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:22,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:53:22,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:53:22,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:53:22,166 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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2025-01-10 00:53:22,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:53:22,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:53:22,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:53:22,449 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:53:22,449 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:53:22,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-01-10 00:53:23,619 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26729ea5c/b2b02a9f6ce744fcb8ab8ed65df9291f/FLAG9ea782775 [2025-01-10 00:53:23,974 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:53:23,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-01-10 00:53:24,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26729ea5c/b2b02a9f6ce744fcb8ab8ed65df9291f/FLAG9ea782775 [2025-01-10 00:53:24,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26729ea5c/b2b02a9f6ce744fcb8ab8ed65df9291f [2025-01-10 00:53:24,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:53:24,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:53:24,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:24,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:53:24,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:53:24,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:24" (1/1) ... [2025-01-10 00:53:24,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142f86bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:24, skipping insertion in model container [2025-01-10 00:53:24,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:24" (1/1) ... [2025-01-10 00:53:24,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:24,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:24,484 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-10 00:53:24,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30238f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:24, skipping insertion in model container [2025-01-10 00:53:24,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:24,485 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:53:24,486 INFO L158 Benchmark]: Toolchain (without parser) took 271.95ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 84.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:53:24,486 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:53:24,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.17ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 84.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:53:24,487 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.17ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 84.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:53:26,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:53:26,307 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:53:26,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:53:26,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:53:26,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:53:26,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:53:26,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:53:26,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:53:26,344 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:53:26,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:53:26,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:53:26,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:53:26,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:53:26,345 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:53:26,346 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:26,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:26,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:26,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:53:26,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:53:26,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:53:26,350 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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2025-01-10 00:53:26,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:53:26,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:53:26,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:53:26,651 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:53:26,651 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:53:26,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-01-10 00:53:28,007 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50e91a1f7/6dfcbffb52f64e96801a7ff6ce6f52c3/FLAG51e634057 [2025-01-10 00:53:28,306 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:53:28,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-01-10 00:53:28,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50e91a1f7/6dfcbffb52f64e96801a7ff6ce6f52c3/FLAG51e634057 [2025-01-10 00:53:28,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50e91a1f7/6dfcbffb52f64e96801a7ff6ce6f52c3 [2025-01-10 00:53:28,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:53:28,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:53:28,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:28,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:53:28,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:53:28,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:28,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746e3f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28, skipping insertion in model container [2025-01-10 00:53:28,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:28,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:28,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:28,806 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:53:28,841 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:28,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:28,897 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:53:28,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:28,976 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:53:28,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28 WrapperNode [2025-01-10 00:53:28,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:28,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:53:28,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:53:28,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:53:28,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,029 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2025-01-10 00:53:29,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:53:29,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:53:29,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:53:29,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:53:29,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,054 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 2, 6]. [2025-01-10 00:53:29,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:53:29,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:53:29,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:53:29,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:53:29,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (1/1) ... [2025-01-10 00:53:29,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:29,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:29,106 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) [2025-01-10 00:53:29,109 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 [2025-01-10 00:53:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-01-10 00:53:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-10 00:53:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:53:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:53:29,134 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:53:29,357 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:53:29,358 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:53:29,731 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:53:29,731 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:53:29,835 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:53:29,835 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:53:29,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:53:29 BoogieIcfgContainer [2025-01-10 00:53:29,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:53:29,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:53:29,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:53:29,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:53:29,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:53:28" (1/3) ... [2025-01-10 00:53:29,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d85ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:53:29, skipping insertion in model container [2025-01-10 00:53:29,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:28" (2/3) ... [2025-01-10 00:53:29,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d85ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:53:29, skipping insertion in model container [2025-01-10 00:53:29,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:53:29" (3/3) ... [2025-01-10 00:53:29,842 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2025-01-10 00:53:29,852 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:53:29,853 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_1-container_of-global.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-01-10 00:53:29,853 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:53:29,909 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 00:53:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2025-01-10 00:53:29,994 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2025-01-10 00:53:29,996 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:53:29,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 18/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 528 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2025-01-10 00:53:30,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2025-01-10 00:53:30,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2025-01-10 00:53:30,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:53:30,023 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;@7237419a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:53:30,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-01-10 00:53:30,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:53:30,029 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-01-10 00:53:30,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:53:30,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:30,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:53:30,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:30,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash 495006, now seen corresponding path program 1 times [2025-01-10 00:53:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:30,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817396769] [2025-01-10 00:53:30,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:30,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:30,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:30,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:53:30,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:53:30,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:53:30,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:30,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:30,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:53:30,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:30,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:30,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:30,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:30,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817396769] [2025-01-10 00:53:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817396769] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511795691] [2025-01-10 00:53:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:30,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:30,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:30,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:30,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:30,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2025-01-10 00:53:30,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:30,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:30,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:30,801 INFO L124 PetriNetUnfolderBase]: 707/2019 cut-off events. [2025-01-10 00:53:30,802 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-10 00:53:30,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 2019 events. 707/2019 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15812 event pairs, 95 based on Foata normal form. 156/1873 useless extension candidates. Maximal degree in co-relation 3062. Up to 1002 conditions per place. [2025-01-10 00:53:30,821 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2025-01-10 00:53:30,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2025-01-10 00:53:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-01-10 00:53:30,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:53:30,831 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2025-01-10 00:53:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2025-01-10 00:53:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:30,837 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2025-01-10 00:53:30,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2025-01-10 00:53:30,841 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2025-01-10 00:53:30,841 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2025-01-10 00:53:30,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2025-01-10 00:53:30,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:30,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:53:30,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:53:31,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:31,046 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:31,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 495007, now seen corresponding path program 1 times [2025-01-10 00:53:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560688164] [2025-01-10 00:53:31,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:31,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:31,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:31,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:53:31,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:53:31,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:53:31,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:31,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:31,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:53:31,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:31,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:31,147 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:31,147 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560688164] [2025-01-10 00:53:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560688164] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:31,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975461670] [2025-01-10 00:53:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:31,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:31,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:31,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:31,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2025-01-10 00:53:31,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2025-01-10 00:53:31,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:31,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2025-01-10 00:53:31,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:31,531 INFO L124 PetriNetUnfolderBase]: 707/2015 cut-off events. [2025-01-10 00:53:31,531 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-01-10 00:53:31,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 2015 events. 707/2015 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15782 event pairs, 95 based on Foata normal form. 2/1715 useless extension candidates. Maximal degree in co-relation 479. Up to 1002 conditions per place. [2025-01-10 00:53:31,539 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2025-01-10 00:53:31,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2025-01-10 00:53:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2025-01-10 00:53:31,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-01-10 00:53:31,541 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2025-01-10 00:53:31,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2025-01-10 00:53:31,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:31,543 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2025-01-10 00:53:31,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2025-01-10 00:53:31,544 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-01-10 00:53:31,544 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2025-01-10 00:53:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2025-01-10 00:53:31,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:31,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-01-10 00:53:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:31,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:31,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:31,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 15345152, now seen corresponding path program 1 times [2025-01-10 00:53:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059719465] [2025-01-10 00:53:31,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:31,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:31,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:31,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:53:31,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:53:31,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:53:31,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:31,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:31,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:53:31,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:31,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:31,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059719465] [2025-01-10 00:53:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059719465] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:31,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:31,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:53:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764759819] [2025-01-10 00:53:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:31,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:31,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:31,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:32,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-01-10 00:53:32,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2025-01-10 00:53:32,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:32,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-01-10 00:53:32,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:32,249 INFO L124 PetriNetUnfolderBase]: 767/1825 cut-off events. [2025-01-10 00:53:32,249 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-01-10 00:53:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1825 events. 767/1825 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12630 event pairs, 705 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 951. Up to 1189 conditions per place. [2025-01-10 00:53:32,258 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 52 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2025-01-10 00:53:32,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 350 flow [2025-01-10 00:53:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-01-10 00:53:32,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:53:32,260 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 264 transitions. [2025-01-10 00:53:32,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 350 flow [2025-01-10 00:53:32,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:32,267 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2025-01-10 00:53:32,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2025-01-10 00:53:32,268 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2025-01-10 00:53:32,268 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2025-01-10 00:53:32,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2025-01-10 00:53:32,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:32,269 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:32,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:32,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:32,473 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:32,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1320838570, now seen corresponding path program 1 times [2025-01-10 00:53:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522458633] [2025-01-10 00:53:32,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:32,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:32,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:32,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:32,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:53:32,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:53:32,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:53:32,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:32,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:32,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:53:32,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:32,575 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,575 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,576 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2025-01-10 00:53:32,610 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,610 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,611 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:32,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:32,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2025-01-10 00:53:32,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:32,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 157 treesize of output 61 [2025-01-10 00:53:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:32,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:32,731 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522458633] [2025-01-10 00:53:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522458633] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:32,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:32,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499238841] [2025-01-10 00:53:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:32,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:32,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:32,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:32,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:32,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2025-01-10 00:53:32,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:32,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:32,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:33,547 INFO L124 PetriNetUnfolderBase]: 1153/2693 cut-off events. [2025-01-10 00:53:33,548 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2025-01-10 00:53:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4685 conditions, 2693 events. 1153/2693 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19796 event pairs, 684 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 4356. Up to 1845 conditions per place. [2025-01-10 00:53:33,561 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 49 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-01-10 00:53:33,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 346 flow [2025-01-10 00:53:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2025-01-10 00:53:33,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-01-10 00:53:33,563 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 5 states and 380 transitions. [2025-01-10 00:53:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 346 flow [2025-01-10 00:53:33,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 335 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:33,567 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 236 flow [2025-01-10 00:53:33,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2025-01-10 00:53:33,568 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -19 predicate places. [2025-01-10 00:53:33,568 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 236 flow [2025-01-10 00:53:33,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2025-01-10 00:53:33,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:33,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:33,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:33,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:33,772 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:33,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930850, now seen corresponding path program 1 times [2025-01-10 00:53:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448066679] [2025-01-10 00:53:33,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:33,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:33,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:33,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:53:33,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:53:33,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:53:33,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:33,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:33,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:53:33,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:33,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:33,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:33,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448066679] [2025-01-10 00:53:33,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448066679] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:33,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:33,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:33,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966310059] [2025-01-10 00:53:33,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:33,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:33,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:33,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:33,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:34,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-01-10 00:53:34,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2025-01-10 00:53:34,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:34,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-01-10 00:53:34,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:34,384 INFO L124 PetriNetUnfolderBase]: 937/2044 cut-off events. [2025-01-10 00:53:34,384 INFO L125 PetriNetUnfolderBase]: For 47/50 co-relation queries the response was YES. [2025-01-10 00:53:34,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3725 conditions, 2044 events. 937/2044 cut-off events. For 47/50 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13467 event pairs, 465 based on Foata normal form. 0/1923 useless extension candidates. Maximal degree in co-relation 1238. Up to 1150 conditions per place. [2025-01-10 00:53:34,393 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 62 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2025-01-10 00:53:34,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 402 flow [2025-01-10 00:53:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2025-01-10 00:53:34,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-01-10 00:53:34,395 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 236 flow. Second operand 4 states and 312 transitions. [2025-01-10 00:53:34,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 115 transitions, 402 flow [2025-01-10 00:53:34,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:34,397 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 228 flow [2025-01-10 00:53:34,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2025-01-10 00:53:34,398 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-01-10 00:53:34,398 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 228 flow [2025-01-10 00:53:34,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2025-01-10 00:53:34,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:34,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:34,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:53:34,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:34,599 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:34,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930849, now seen corresponding path program 1 times [2025-01-10 00:53:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:34,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102094747] [2025-01-10 00:53:34,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:34,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:34,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:34,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 00:53:34,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:53:34,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:53:34,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:34,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:34,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:53:34,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:34,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:34,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:34,788 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102094747] [2025-01-10 00:53:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102094747] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:34,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:34,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720397338] [2025-01-10 00:53:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:34,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:34,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:34,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:34,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:34,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2025-01-10 00:53:34,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:34,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:35,159 INFO L124 PetriNetUnfolderBase]: 816/1932 cut-off events. [2025-01-10 00:53:35,159 INFO L125 PetriNetUnfolderBase]: For 176/179 co-relation queries the response was YES. [2025-01-10 00:53:35,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3514 conditions, 1932 events. 816/1932 cut-off events. For 176/179 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13175 event pairs, 531 based on Foata normal form. 88/1839 useless extension candidates. Maximal degree in co-relation 1086. Up to 992 conditions per place. [2025-01-10 00:53:35,168 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2025-01-10 00:53:35,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 112 transitions, 396 flow [2025-01-10 00:53:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2025-01-10 00:53:35,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2025-01-10 00:53:35,169 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 228 flow. Second operand 3 states and 261 transitions. [2025-01-10 00:53:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 112 transitions, 396 flow [2025-01-10 00:53:35,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:35,171 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 237 flow [2025-01-10 00:53:35,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2025-01-10 00:53:35,172 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-01-10 00:53:35,172 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 237 flow [2025-01-10 00:53:35,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2025-01-10 00:53:35,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:35,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:35,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:35,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:35,374 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:35,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 899898882, now seen corresponding path program 1 times [2025-01-10 00:53:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818816635] [2025-01-10 00:53:35,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:35,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:35,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:35,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:53:35,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 00:53:35,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 00:53:35,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:35,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:35,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:53:35,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:35,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:35,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:35,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818816635] [2025-01-10 00:53:35,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818816635] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:35,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500456711] [2025-01-10 00:53:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:35,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:35,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:35,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:35,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2025-01-10 00:53:35,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2025-01-10 00:53:35,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:35,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2025-01-10 00:53:35,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:36,381 INFO L124 PetriNetUnfolderBase]: 840/2065 cut-off events. [2025-01-10 00:53:36,381 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2025-01-10 00:53:36,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 2065 events. 840/2065 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14395 event pairs, 129 based on Foata normal form. 145/2132 useless extension candidates. Maximal degree in co-relation 2615. Up to 948 conditions per place. [2025-01-10 00:53:36,390 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 88 selfloop transitions, 11 changer transitions 2/150 dead transitions. [2025-01-10 00:53:36,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 566 flow [2025-01-10 00:53:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2025-01-10 00:53:36,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5898268398268398 [2025-01-10 00:53:36,392 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 237 flow. Second operand 7 states and 545 transitions. [2025-01-10 00:53:36,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 566 flow [2025-01-10 00:53:36,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 150 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:53:36,395 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 297 flow [2025-01-10 00:53:36,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2025-01-10 00:53:36,396 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -17 predicate places. [2025-01-10 00:53:36,396 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 297 flow [2025-01-10 00:53:36,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2025-01-10 00:53:36,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:36,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:36,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:36,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:36,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:36,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:36,598 INFO L85 PathProgramCache]: Analyzing trace with hash 899898881, now seen corresponding path program 1 times [2025-01-10 00:53:36,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:36,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579885913] [2025-01-10 00:53:36,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:36,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:36,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:53:36,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 00:53:36,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 00:53:36,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:36,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:36,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:53:36,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:36,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:36,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:36,746 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579885913] [2025-01-10 00:53:36,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579885913] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:36,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132965467] [2025-01-10 00:53:36,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:36,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:36,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:36,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:36,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:36,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:36,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2025-01-10 00:53:36,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:36,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:36,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:37,414 INFO L124 PetriNetUnfolderBase]: 1177/2657 cut-off events. [2025-01-10 00:53:37,414 INFO L125 PetriNetUnfolderBase]: For 672/675 co-relation queries the response was YES. [2025-01-10 00:53:37,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 2657 events. 1177/2657 cut-off events. For 672/675 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18670 event pairs, 139 based on Foata normal form. 64/2602 useless extension candidates. Maximal degree in co-relation 3344. Up to 1078 conditions per place. [2025-01-10 00:53:37,427 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 102 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2025-01-10 00:53:37,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 665 flow [2025-01-10 00:53:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2025-01-10 00:53:37,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615530303030303 [2025-01-10 00:53:37,429 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 297 flow. Second operand 8 states and 593 transitions. [2025-01-10 00:53:37,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 665 flow [2025-01-10 00:53:37,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 665 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:53:37,438 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 401 flow [2025-01-10 00:53:37,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=401, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-01-10 00:53:37,439 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2025-01-10 00:53:37,439 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 401 flow [2025-01-10 00:53:37,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2025-01-10 00:53:37,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:37,441 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:37,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:53:37,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:37,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:37,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -60742247, now seen corresponding path program 1 times [2025-01-10 00:53:37,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:37,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946847172] [2025-01-10 00:53:37,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:37,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:37,649 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:37,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:53:37,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 00:53:37,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:53:37,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:37,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:37,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:53:37,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:37,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:37,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:37,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946847172] [2025-01-10 00:53:37,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946847172] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:37,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356163095] [2025-01-10 00:53:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:37,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:37,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:38,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2025-01-10 00:53:38,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2025-01-10 00:53:38,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:38,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2025-01-10 00:53:38,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:38,613 INFO L124 PetriNetUnfolderBase]: 894/2269 cut-off events. [2025-01-10 00:53:38,613 INFO L125 PetriNetUnfolderBase]: For 1898/1988 co-relation queries the response was YES. [2025-01-10 00:53:38,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4884 conditions, 2269 events. 894/2269 cut-off events. For 1898/1988 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 16545 event pairs, 125 based on Foata normal form. 174/2385 useless extension candidates. Maximal degree in co-relation 4482. Up to 1036 conditions per place. [2025-01-10 00:53:38,622 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 92 selfloop transitions, 16 changer transitions 1/160 dead transitions. [2025-01-10 00:53:38,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 160 transitions, 801 flow [2025-01-10 00:53:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2025-01-10 00:53:38,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2025-01-10 00:53:38,624 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 401 flow. Second operand 7 states and 542 transitions. [2025-01-10 00:53:38,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 160 transitions, 801 flow [2025-01-10 00:53:38,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 786 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:38,629 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 496 flow [2025-01-10 00:53:38,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2025-01-10 00:53:38,629 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2025-01-10 00:53:38,630 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 496 flow [2025-01-10 00:53:38,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2025-01-10 00:53:38,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:38,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:38,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:53:38,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:38,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:38,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -60742248, now seen corresponding path program 1 times [2025-01-10 00:53:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972661975] [2025-01-10 00:53:38,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:38,835 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:38,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:53:38,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 00:53:38,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:53:38,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:38,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:38,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:53:38,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:38,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:38,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:38,985 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:38,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972661975] [2025-01-10 00:53:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972661975] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:38,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67017806] [2025-01-10 00:53:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:38,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:38,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:38,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:39,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:39,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2025-01-10 00:53:39,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:39,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:39,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:39,687 INFO L124 PetriNetUnfolderBase]: 1336/2921 cut-off events. [2025-01-10 00:53:39,687 INFO L125 PetriNetUnfolderBase]: For 3195/3352 co-relation queries the response was YES. [2025-01-10 00:53:39,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 2921 events. 1336/2921 cut-off events. For 3195/3352 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20417 event pairs, 350 based on Foata normal form. 99/2953 useless extension candidates. Maximal degree in co-relation 6110. Up to 1093 conditions per place. [2025-01-10 00:53:39,699 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 108 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2025-01-10 00:53:39,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 930 flow [2025-01-10 00:53:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2025-01-10 00:53:39,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615530303030303 [2025-01-10 00:53:39,701 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 496 flow. Second operand 8 states and 593 transitions. [2025-01-10 00:53:39,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 930 flow [2025-01-10 00:53:39,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 175 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:53:39,707 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 622 flow [2025-01-10 00:53:39,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=622, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2025-01-10 00:53:39,709 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 11 predicate places. [2025-01-10 00:53:39,709 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 622 flow [2025-01-10 00:53:39,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2025-01-10 00:53:39,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:39,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:39,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:39,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:39,914 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:39,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1770422097, now seen corresponding path program 1 times [2025-01-10 00:53:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123381248] [2025-01-10 00:53:39,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:39,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:39,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 00:53:40,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:53:40,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:53:40,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:40,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:40,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 00:53:40,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:40,047 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:40,047 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:40,048 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:40,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2025-01-10 00:53:40,080 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:40,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:40,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 73 [2025-01-10 00:53:40,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:40,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 57 [2025-01-10 00:53:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:40,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:40,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123381248] [2025-01-10 00:53:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123381248] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:53:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899903485] [2025-01-10 00:53:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:40,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:53:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:40,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:53:40,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:53:40,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2025-01-10 00:53:40,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2025-01-10 00:53:40,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:40,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2025-01-10 00:53:40,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:41,970 INFO L124 PetriNetUnfolderBase]: 2137/4104 cut-off events. [2025-01-10 00:53:41,971 INFO L125 PetriNetUnfolderBase]: For 7170/7498 co-relation queries the response was YES. [2025-01-10 00:53:41,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 4104 events. 2137/4104 cut-off events. For 7170/7498 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 27879 event pairs, 627 based on Foata normal form. 35/3963 useless extension candidates. Maximal degree in co-relation 10403. Up to 1772 conditions per place. [2025-01-10 00:53:41,983 INFO L140 encePairwiseOnDemand]: 107/132 looper letters, 116 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2025-01-10 00:53:41,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 204 transitions, 1302 flow [2025-01-10 00:53:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2025-01-10 00:53:41,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691287878787878 [2025-01-10 00:53:41,985 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 622 flow. Second operand 8 states and 601 transitions. [2025-01-10 00:53:41,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 204 transitions, 1302 flow [2025-01-10 00:53:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 204 transitions, 1289 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:41,993 INFO L231 Difference]: Finished difference. Result has 141 places, 154 transitions, 958 flow [2025-01-10 00:53:41,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=141, PETRI_TRANSITIONS=154} [2025-01-10 00:53:41,993 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 19 predicate places. [2025-01-10 00:53:41,993 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 154 transitions, 958 flow [2025-01-10 00:53:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2025-01-10 00:53:41,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:41,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:42,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 00:53:42,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:42,194 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:42,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2126411872, now seen corresponding path program 1 times [2025-01-10 00:53:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38591740] [2025-01-10 00:53:42,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:42,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:42,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 00:53:42,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 00:53:42,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 00:53:42,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:42,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:42,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 00:53:42,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:42,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:42,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:42,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:53:42,469 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:42,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:53:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:42,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:42,480 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38591740] [2025-01-10 00:53:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38591740] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:42,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798343250] [2025-01-10 00:53:42,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:42,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:53:42,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:42,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:53:42,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:53:42,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2025-01-10 00:53:42,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 154 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2025-01-10 00:53:42,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:42,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2025-01-10 00:53:42,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:43,598 INFO L124 PetriNetUnfolderBase]: 2217/4570 cut-off events. [2025-01-10 00:53:43,598 INFO L125 PetriNetUnfolderBase]: For 9132/9397 co-relation queries the response was YES. [2025-01-10 00:53:43,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14091 conditions, 4570 events. 2217/4570 cut-off events. For 9132/9397 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 33988 event pairs, 388 based on Foata normal form. 71/4569 useless extension candidates. Maximal degree in co-relation 12698. Up to 1922 conditions per place. [2025-01-10 00:53:43,615 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 154 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2025-01-10 00:53:43,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 232 transitions, 1617 flow [2025-01-10 00:53:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:53:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 00:53:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 618 transitions. [2025-01-10 00:53:43,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2025-01-10 00:53:43,619 INFO L175 Difference]: Start difference. First operand has 141 places, 154 transitions, 958 flow. Second operand 9 states and 618 transitions. [2025-01-10 00:53:43,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 232 transitions, 1617 flow [2025-01-10 00:53:43,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 232 transitions, 1580 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:43,642 INFO L231 Difference]: Finished difference. Result has 145 places, 152 transitions, 969 flow [2025-01-10 00:53:43,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=145, PETRI_TRANSITIONS=152} [2025-01-10 00:53:43,643 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2025-01-10 00:53:43,643 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 152 transitions, 969 flow [2025-01-10 00:53:43,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2025-01-10 00:53:43,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:43,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:43,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 00:53:43,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:43,844 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:43,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1413477800, now seen corresponding path program 1 times [2025-01-10 00:53:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710542620] [2025-01-10 00:53:43,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:43,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:43,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:43,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 00:53:43,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 00:53:43,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 00:53:43,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:43,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:43,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 00:53:43,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:43,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:44,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:44,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:53:44,079 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:44,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:53:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:44,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:44,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710542620] [2025-01-10 00:53:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710542620] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:44,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:44,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:53:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224708347] [2025-01-10 00:53:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:44,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:53:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:44,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:53:44,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:53:44,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 132 [2025-01-10 00:53:44,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 152 transitions, 969 flow. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2025-01-10 00:53:44,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:44,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 132 [2025-01-10 00:53:44,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:45,550 INFO L124 PetriNetUnfolderBase]: 2531/5166 cut-off events. [2025-01-10 00:53:45,550 INFO L125 PetriNetUnfolderBase]: For 11453/11804 co-relation queries the response was YES. [2025-01-10 00:53:45,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15881 conditions, 5166 events. 2531/5166 cut-off events. For 11453/11804 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39550 event pairs, 711 based on Foata normal form. 90/5189 useless extension candidates. Maximal degree in co-relation 13234. Up to 1928 conditions per place. [2025-01-10 00:53:45,571 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 156 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2025-01-10 00:53:45,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 230 transitions, 1640 flow [2025-01-10 00:53:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:53:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 00:53:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 602 transitions. [2025-01-10 00:53:45,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5067340067340067 [2025-01-10 00:53:45,573 INFO L175 Difference]: Start difference. First operand has 145 places, 152 transitions, 969 flow. Second operand 9 states and 602 transitions. [2025-01-10 00:53:45,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 230 transitions, 1640 flow [2025-01-10 00:53:45,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 230 transitions, 1584 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-10 00:53:45,597 INFO L231 Difference]: Finished difference. Result has 143 places, 150 transitions, 967 flow [2025-01-10 00:53:45,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=967, PETRI_PLACES=143, PETRI_TRANSITIONS=150} [2025-01-10 00:53:45,598 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 21 predicate places. [2025-01-10 00:53:45,598 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 150 transitions, 967 flow [2025-01-10 00:53:45,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2025-01-10 00:53:45,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:45,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:45,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:53:45,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:45,799 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:45,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 386742127, now seen corresponding path program 1 times [2025-01-10 00:53:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651097375] [2025-01-10 00:53:45,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:45,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:45,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:45,803 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:45,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 00:53:45,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 00:53:45,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 00:53:45,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:45,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:45,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:53:45,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:45,929 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:45,930 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:45,930 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:45,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2025-01-10 00:53:46,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:46,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2025-01-10 00:53:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:46,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:46,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651097375] [2025-01-10 00:53:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651097375] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193739531] [2025-01-10 00:53:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:46,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:46,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:46,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:46,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:46,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 150 transitions, 967 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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) [2025-01-10 00:53:46,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:46,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:47,878 INFO L124 PetriNetUnfolderBase]: 2959/5702 cut-off events. [2025-01-10 00:53:47,878 INFO L125 PetriNetUnfolderBase]: For 13175/13719 co-relation queries the response was YES. [2025-01-10 00:53:47,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18783 conditions, 5702 events. 2959/5702 cut-off events. For 13175/13719 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 41954 event pairs, 1047 based on Foata normal form. 202/5844 useless extension candidates. Maximal degree in co-relation 16093. Up to 2612 conditions per place. [2025-01-10 00:53:47,900 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 122 selfloop transitions, 72 changer transitions 0/229 dead transitions. [2025-01-10 00:53:47,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 229 transitions, 1785 flow [2025-01-10 00:53:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:47,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2025-01-10 00:53:47,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2025-01-10 00:53:47,902 INFO L175 Difference]: Start difference. First operand has 143 places, 150 transitions, 967 flow. Second operand 7 states and 536 transitions. [2025-01-10 00:53:47,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 229 transitions, 1785 flow [2025-01-10 00:53:47,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 229 transitions, 1734 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 00:53:47,935 INFO L231 Difference]: Finished difference. Result has 148 places, 179 transitions, 1439 flow [2025-01-10 00:53:47,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1439, PETRI_PLACES=148, PETRI_TRANSITIONS=179} [2025-01-10 00:53:47,936 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2025-01-10 00:53:47,936 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 179 transitions, 1439 flow [2025-01-10 00:53:47,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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) [2025-01-10 00:53:47,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:47,936 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:47,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:53:48,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:48,137 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:48,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -896002718, now seen corresponding path program 1 times [2025-01-10 00:53:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818181642] [2025-01-10 00:53:48,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:48,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:48,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:48,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:48,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 00:53:48,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 00:53:48,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:53:48,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:48,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:48,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:53:48,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:48,358 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_81| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81|)))) is different from true [2025-01-10 00:53:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:48,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:48,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818181642] [2025-01-10 00:53:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818181642] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285783112] [2025-01-10 00:53:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:48,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:48,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:48,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-01-10 00:53:48,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2025-01-10 00:53:48,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 179 transitions, 1439 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2025-01-10 00:53:48,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:48,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2025-01-10 00:53:48,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:49,400 INFO L124 PetriNetUnfolderBase]: 4240/7756 cut-off events. [2025-01-10 00:53:49,401 INFO L125 PetriNetUnfolderBase]: For 22448/22452 co-relation queries the response was YES. [2025-01-10 00:53:49,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29120 conditions, 7756 events. 4240/7756 cut-off events. For 22448/22452 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 57350 event pairs, 1790 based on Foata normal form. 1/7735 useless extension candidates. Maximal degree in co-relation 24457. Up to 3737 conditions per place. [2025-01-10 00:53:49,444 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 163 selfloop transitions, 37 changer transitions 4/229 dead transitions. [2025-01-10 00:53:49,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 229 transitions, 2110 flow [2025-01-10 00:53:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2025-01-10 00:53:49,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-01-10 00:53:49,445 INFO L175 Difference]: Start difference. First operand has 148 places, 179 transitions, 1439 flow. Second operand 5 states and 310 transitions. [2025-01-10 00:53:49,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 229 transitions, 2110 flow [2025-01-10 00:53:49,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 229 transitions, 2106 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-01-10 00:53:49,562 INFO L231 Difference]: Finished difference. Result has 155 places, 197 transitions, 1719 flow [2025-01-10 00:53:49,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1719, PETRI_PLACES=155, PETRI_TRANSITIONS=197} [2025-01-10 00:53:49,562 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 33 predicate places. [2025-01-10 00:53:49,563 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 197 transitions, 1719 flow [2025-01-10 00:53:49,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2025-01-10 00:53:49,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:49,563 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:49,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:53:49,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:49,763 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:49,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1071101946, now seen corresponding path program 1 times [2025-01-10 00:53:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984269676] [2025-01-10 00:53:49,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:49,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:49,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:49,767 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:49,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 00:53:49,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 00:53:49,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 00:53:49,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:49,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:49,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:53:49,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:49,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:49,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:49,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984269676] [2025-01-10 00:53:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984269676] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:49,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468460801] [2025-01-10 00:53:49,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:49,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:49,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:49,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:50,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-01-10 00:53:50,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 197 transitions, 1719 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-01-10 00:53:50,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:50,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-01-10 00:53:50,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:50,873 INFO L124 PetriNetUnfolderBase]: 2941/5701 cut-off events. [2025-01-10 00:53:50,874 INFO L125 PetriNetUnfolderBase]: For 24335/24883 co-relation queries the response was YES. [2025-01-10 00:53:50,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24467 conditions, 5701 events. 2941/5701 cut-off events. For 24335/24883 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43409 event pairs, 1437 based on Foata normal form. 130/5649 useless extension candidates. Maximal degree in co-relation 20635. Up to 3896 conditions per place. [2025-01-10 00:53:50,914 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2025-01-10 00:53:50,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 203 transitions, 1985 flow [2025-01-10 00:53:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-01-10 00:53:50,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-01-10 00:53:50,918 INFO L175 Difference]: Start difference. First operand has 155 places, 197 transitions, 1719 flow. Second operand 3 states and 257 transitions. [2025-01-10 00:53:50,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 203 transitions, 1985 flow [2025-01-10 00:53:51,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 203 transitions, 1900 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:51,044 INFO L231 Difference]: Finished difference. Result has 151 places, 195 transitions, 1640 flow [2025-01-10 00:53:51,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1640, PETRI_PLACES=151, PETRI_TRANSITIONS=195} [2025-01-10 00:53:51,045 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 29 predicate places. [2025-01-10 00:53:51,045 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 195 transitions, 1640 flow [2025-01-10 00:53:51,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-01-10 00:53:51,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:51,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:51,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:51,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:51,250 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:51,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2033727483, now seen corresponding path program 1 times [2025-01-10 00:53:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:51,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290426634] [2025-01-10 00:53:51,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:51,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:51,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 00:53:51,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 00:53:51,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 00:53:51,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:51,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:51,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:53:51,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:51,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:51,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:51,440 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:51,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290426634] [2025-01-10 00:53:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290426634] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266977304] [2025-01-10 00:53:51,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:51,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:51,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:51,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:51,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-01-10 00:53:51,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 195 transitions, 1640 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-01-10 00:53:51,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:51,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-01-10 00:53:51,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:52,142 INFO L124 PetriNetUnfolderBase]: 2928/5663 cut-off events. [2025-01-10 00:53:52,143 INFO L125 PetriNetUnfolderBase]: For 22565/23146 co-relation queries the response was YES. [2025-01-10 00:53:52,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24011 conditions, 5663 events. 2928/5663 cut-off events. For 22565/23146 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42473 event pairs, 1480 based on Foata normal form. 145/5621 useless extension candidates. Maximal degree in co-relation 23278. Up to 3902 conditions per place. [2025-01-10 00:53:52,179 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2025-01-10 00:53:52,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 201 transitions, 1906 flow [2025-01-10 00:53:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-01-10 00:53:52,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-01-10 00:53:52,182 INFO L175 Difference]: Start difference. First operand has 151 places, 195 transitions, 1640 flow. Second operand 3 states and 257 transitions. [2025-01-10 00:53:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 201 transitions, 1906 flow [2025-01-10 00:53:52,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 1896 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:52,264 INFO L231 Difference]: Finished difference. Result has 149 places, 193 transitions, 1636 flow [2025-01-10 00:53:52,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1636, PETRI_PLACES=149, PETRI_TRANSITIONS=193} [2025-01-10 00:53:52,266 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 27 predicate places. [2025-01-10 00:53:52,266 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 193 transitions, 1636 flow [2025-01-10 00:53:52,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-01-10 00:53:52,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:52,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:52,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:52,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:52,468 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:52,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash 77536717, now seen corresponding path program 1 times [2025-01-10 00:53:52,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:52,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977034953] [2025-01-10 00:53:52,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:52,475 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:52,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 00:53:52,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 00:53:52,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 00:53:52,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:52,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:52,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:53:52,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:52,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:52,611 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977034953] [2025-01-10 00:53:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977034953] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:52,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:52,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909729239] [2025-01-10 00:53:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:52,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:52,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:52,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-01-10 00:53:52,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 193 transitions, 1636 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2025-01-10 00:53:52,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:52,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-01-10 00:53:52,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:52,791 INFO L124 PetriNetUnfolderBase]: 266/540 cut-off events. [2025-01-10 00:53:52,792 INFO L125 PetriNetUnfolderBase]: For 1672/1732 co-relation queries the response was YES. [2025-01-10 00:53:52,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 540 events. 266/540 cut-off events. For 1672/1732 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2138 event pairs, 50 based on Foata normal form. 49/569 useless extension candidates. Maximal degree in co-relation 2198. Up to 269 conditions per place. [2025-01-10 00:53:52,794 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2025-01-10 00:53:52,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 100 transitions, 763 flow [2025-01-10 00:53:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2025-01-10 00:53:52,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2025-01-10 00:53:52,796 INFO L175 Difference]: Start difference. First operand has 149 places, 193 transitions, 1636 flow. Second operand 4 states and 335 transitions. [2025-01-10 00:53:52,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 100 transitions, 763 flow [2025-01-10 00:53:52,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 501 flow, removed 26 selfloop flow, removed 42 redundant places. [2025-01-10 00:53:52,800 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 309 flow [2025-01-10 00:53:52,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2025-01-10 00:53:52,800 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2025-01-10 00:53:52,800 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 309 flow [2025-01-10 00:53:52,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2025-01-10 00:53:52,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:52,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:52,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:53,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:53,005 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:53,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:53,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1331226560, now seen corresponding path program 1 times [2025-01-10 00:53:53,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:53,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813482229] [2025-01-10 00:53:53,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:53,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:53,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:53,007 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 00:53:53,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:53,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:53,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:53,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:53,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:53:53,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:53,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2025-01-10 00:53:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:53,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:53,206 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:53,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813482229] [2025-01-10 00:53:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813482229] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:53,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326589226] [2025-01-10 00:53:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:53,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:53,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:53,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:53,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-01-10 00:53:53,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2025-01-10 00:53:53,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:53,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-01-10 00:53:53,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:53,637 INFO L124 PetriNetUnfolderBase]: 322/727 cut-off events. [2025-01-10 00:53:53,637 INFO L125 PetriNetUnfolderBase]: For 975/977 co-relation queries the response was YES. [2025-01-10 00:53:53,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 727 events. 322/727 cut-off events. For 975/977 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3578 event pairs, 44 based on Foata normal form. 12/732 useless extension candidates. Maximal degree in co-relation 2134. Up to 283 conditions per place. [2025-01-10 00:53:53,640 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 83 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2025-01-10 00:53:53,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 133 transitions, 773 flow [2025-01-10 00:53:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 569 transitions. [2025-01-10 00:53:53,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6158008658008658 [2025-01-10 00:53:53,642 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 309 flow. Second operand 7 states and 569 transitions. [2025-01-10 00:53:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 133 transitions, 773 flow [2025-01-10 00:53:53,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 725 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:53,644 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 405 flow [2025-01-10 00:53:53,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2025-01-10 00:53:53,645 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -26 predicate places. [2025-01-10 00:53:53,645 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 405 flow [2025-01-10 00:53:53,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2025-01-10 00:53:53,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:53,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:53,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:53,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:53,850 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2025772350, now seen corresponding path program 2 times [2025-01-10 00:53:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522738048] [2025-01-10 00:53:53,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:53:53,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:53,853 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:53,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 00:53:53,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:54,018 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:54,018 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 00:53:54,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:54,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:53:54,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:54,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:53:54,086 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-10 00:53:54,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-10 00:53:54,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2025-01-10 00:53:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:54,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:54,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:54,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522738048] [2025-01-10 00:53:54,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522738048] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:54,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:54,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:54,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569113251] [2025-01-10 00:53:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:54,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:54,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:54,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:54,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-01-10 00:53:54,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2025-01-10 00:53:54,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:54,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-01-10 00:53:54,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:54,424 INFO L124 PetriNetUnfolderBase]: 317/670 cut-off events. [2025-01-10 00:53:54,424 INFO L125 PetriNetUnfolderBase]: For 971/978 co-relation queries the response was YES. [2025-01-10 00:53:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 670 events. 317/670 cut-off events. For 971/978 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3071 event pairs, 152 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 2163. Up to 395 conditions per place. [2025-01-10 00:53:54,426 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 76 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2025-01-10 00:53:54,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 660 flow [2025-01-10 00:53:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2025-01-10 00:53:54,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2025-01-10 00:53:54,428 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 405 flow. Second operand 4 states and 291 transitions. [2025-01-10 00:53:54,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 660 flow [2025-01-10 00:53:54,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 648 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-10 00:53:54,430 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 411 flow [2025-01-10 00:53:54,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2025-01-10 00:53:54,430 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-01-10 00:53:54,430 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 411 flow [2025-01-10 00:53:54,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2025-01-10 00:53:54,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:54,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:54,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 00:53:54,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:54,631 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:54,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash 969933495, now seen corresponding path program 1 times [2025-01-10 00:53:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:54,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505304944] [2025-01-10 00:53:54,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:54,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:54,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:54,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 00:53:54,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:54,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:54,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:54,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:54,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:53:54,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:54,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:53:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:54,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:53:55,001 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:55,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:53:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:55,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:55,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505304944] [2025-01-10 00:53:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505304944] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:55,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300633403] [2025-01-10 00:53:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:55,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:55,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:55,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:55,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2025-01-10 00:53:55,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 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) [2025-01-10 00:53:55,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:55,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2025-01-10 00:53:55,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:55,442 INFO L124 PetriNetUnfolderBase]: 324/674 cut-off events. [2025-01-10 00:53:55,442 INFO L125 PetriNetUnfolderBase]: For 957/966 co-relation queries the response was YES. [2025-01-10 00:53:55,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 674 events. 324/674 cut-off events. For 957/966 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3127 event pairs, 109 based on Foata normal form. 4/648 useless extension candidates. Maximal degree in co-relation 2208. Up to 342 conditions per place. [2025-01-10 00:53:55,444 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 74 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2025-01-10 00:53:55,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 654 flow [2025-01-10 00:53:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 328 transitions. [2025-01-10 00:53:55,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2025-01-10 00:53:55,446 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 411 flow. Second operand 5 states and 328 transitions. [2025-01-10 00:53:55,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 654 flow [2025-01-10 00:53:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 640 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:55,448 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 407 flow [2025-01-10 00:53:55,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2025-01-10 00:53:55,449 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -29 predicate places. [2025-01-10 00:53:55,449 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 407 flow [2025-01-10 00:53:55,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 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) [2025-01-10 00:53:55,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:55,449 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:55,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-10 00:53:55,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:55,650 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:55,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1994802463, now seen corresponding path program 1 times [2025-01-10 00:53:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860275402] [2025-01-10 00:53:55,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:55,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:55,653 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:55,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 00:53:55,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:53:55,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:55,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:55,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:55,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 00:53:55,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:56,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:56,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:56,023 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:56,023 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:56,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2025-01-10 00:53:56,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:56,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2025-01-10 00:53:58,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:58,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 63 [2025-01-10 00:53:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:58,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:58,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860275402] [2025-01-10 00:53:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860275402] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 00:53:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692316632] [2025-01-10 00:53:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:58,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 00:53:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:58,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 00:53:58,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-01-10 00:54:00,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:02,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:04,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:06,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:08,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:10,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:11,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:13,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:15,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:17,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:19,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:23,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:25,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:27,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:29,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:31,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:32,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:34,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:36,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:38,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:40,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:42,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:44,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:46,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:49,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:51,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:53,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:56,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:58,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:58,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 132 [2025-01-10 00:54:58,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 407 flow. Second operand has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 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) [2025-01-10 00:54:58,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:58,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 132 [2025-01-10 00:54:58,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:03,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]