./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.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/goblint-regression/06-symbeq_15-list_entry_nr.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 a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:55:20,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:55:20,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:55:20,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:55:20,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:55:20,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:55:20,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:55:20,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:55:20,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:55:20,445 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:55:20,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:55:20,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:55:20,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:55:20,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:55:20,446 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:55:20,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:55:20,446 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:55:20,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:55:20,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:55:20,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:55:20,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:55:20,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:55:20,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:55:20,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:55:20,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:55:20,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:55:20,450 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 -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2025-01-10 00:55:20,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:55:20,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:55:20,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:55:20,683 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:55:20,683 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:55:20,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-01-10 00:55:21,938 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a21baad86/611edda28ebd4fef8a8c438e577983fb/FLAG45e857cd5 [2025-01-10 00:55:22,288 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:55:22,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-01-10 00:55:22,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a21baad86/611edda28ebd4fef8a8c438e577983fb/FLAG45e857cd5 [2025-01-10 00:55:22,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a21baad86/611edda28ebd4fef8a8c438e577983fb [2025-01-10 00:55:22,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:55:22,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:55:22,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:55:22,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:55:22,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:55:22,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:55:22" (1/1) ... [2025-01-10 00:55:22,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3874f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:22, skipping insertion in model container [2025-01-10 00:55:22,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:55:22" (1/1) ... [2025-01-10 00:55:22,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:55:22,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:55:22,763 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 00:55:22,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4380b478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:22, skipping insertion in model container [2025-01-10 00:55:22,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:55:22,764 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:55:22,765 INFO L158 Benchmark]: Toolchain (without parser) took 241.85ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 141.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:55:22,765 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 209.7MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:55:22,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.10ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 141.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:55:22,766 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 209.7MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.10ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 141.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2999]: 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/goblint-regression/06-symbeq_15-list_entry_nr.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 a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:55:24,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:55:24,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:55:24,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:55:24,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:55:24,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:55:24,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:55:24,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:55:24,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:55:24,873 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:55:24,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:55:24,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:55:24,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:55:24,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:55:24,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:55:24,877 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:55:24,877 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:55:24,877 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:55:24,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:55:24,877 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:55:24,878 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:55:24,878 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:55:24,878 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:55:24,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:55:24,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:55:24,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:55:24,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:55:24,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:55:24,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:55:24,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:55:24,880 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 -> a7843ed292ba7ad810f8623eae57d1bf23212a957c35d700b564dc03a7df5581 [2025-01-10 00:55:25,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:55:25,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:55:25,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:55:25,162 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:55:25,162 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:55:25,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-01-10 00:55:26,330 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3ac1c2d4a/50068a8dd98c4176b329babbb4af5ce0/FLAG841805a46 [2025-01-10 00:55:26,616 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:55:26,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2025-01-10 00:55:26,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3ac1c2d4a/50068a8dd98c4176b329babbb4af5ce0/FLAG841805a46 [2025-01-10 00:55:26,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3ac1c2d4a/50068a8dd98c4176b329babbb4af5ce0 [2025-01-10 00:55:26,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:55:26,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:55:26,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:55:26,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:55:26,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:55:26,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:55:26" (1/1) ... [2025-01-10 00:55:26,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2668e3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:26, skipping insertion in model container [2025-01-10 00:55:26,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:55:26" (1/1) ... [2025-01-10 00:55:26,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:55:27,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:55:27,299 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:55:27,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:55:27,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:55:27,364 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:55:27,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:55:27,417 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:55:27,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27 WrapperNode [2025-01-10 00:55:27,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:55:27,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:55:27,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:55:27,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:55:27,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,462 INFO L138 Inliner]: procedures = 187, calls = 12, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2025-01-10 00:55:27,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:55:27,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:55:27,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:55:27,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:55:27,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,478 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-01-10 00:55:27,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,483 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:55:27,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:55:27,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:55:27,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:55:27,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (1/1) ... [2025-01-10 00:55:27,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:55:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:27,516 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 00:55:27,518 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 00:55:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:55:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 00:55:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:55:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-01-10 00:55:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-01-10 00:55:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:55:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 00:55:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:55:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:55:27,552 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 00:55:27,675 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:55:27,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:55:27,874 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:55:27,874 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:55:27,946 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:55:27,946 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:55:27,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:55:27 BoogieIcfgContainer [2025-01-10 00:55:27,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:55:27,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:55:27,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:55:27,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:55:27,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:55:26" (1/3) ... [2025-01-10 00:55:27,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b806786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:55:27, skipping insertion in model container [2025-01-10 00:55:27,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:55:27" (2/3) ... [2025-01-10 00:55:27,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b806786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:55:27, skipping insertion in model container [2025-01-10 00:55:27,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:55:27" (3/3) ... [2025-01-10 00:55:27,953 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2025-01-10 00:55:27,962 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:55:27,963 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_15-list_entry_nr.i that has 2 procedures, 31 locations, 1 initial locations, 0 loop locations, and 11 error locations. [2025-01-10 00:55:27,963 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:55:28,009 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:55:28,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 64 flow [2025-01-10 00:55:28,046 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2025-01-10 00:55:28,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:55:28,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-01-10 00:55:28,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 64 flow [2025-01-10 00:55:28,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 61 flow [2025-01-10 00:55:28,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:55:28,063 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;@313e30cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:55:28,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-01-10 00:55:28,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:55:28,065 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-01-10 00:55:28,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:55:28,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:28,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-01-10 00:55:28,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:28,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash 6345, now seen corresponding path program 1 times [2025-01-10 00:55:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953898776] [2025-01-10 00:55:28,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:28,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:28,080 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 00:55:28,082 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 00:55:28,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-01-10 00:55:28,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-01-10 00:55:28,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:28,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:28,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:55:28,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:28,177 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 00:55:28,189 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 00:55:28,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:28,190 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953898776] [2025-01-10 00:55:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953898776] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:28,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:55:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573465093] [2025-01-10 00:55:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:28,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:55:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:28,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:55:28,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:55:28,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-01-10 00:55:28,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:55:28,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:28,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-01-10 00:55:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:28,296 INFO L124 PetriNetUnfolderBase]: 42/138 cut-off events. [2025-01-10 00:55:28,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:55:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 138 events. 42/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 528 event pairs, 42 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 231. Up to 100 conditions per place. [2025-01-10 00:55:28,298 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 14 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2025-01-10 00:55:28,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 91 flow [2025-01-10 00:55:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:55:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:55:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-01-10 00:55:28,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-01-10 00:55:28,307 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 61 flow. Second operand 3 states and 56 transitions. [2025-01-10 00:55:28,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 91 flow [2025-01-10 00:55:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:55:28,311 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 62 flow [2025-01-10 00:55:28,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-01-10 00:55:28,315 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2025-01-10 00:55:28,315 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 62 flow [2025-01-10 00:55:28,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:55:28,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:28,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-01-10 00:55:28,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 00:55:28,517 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 00:55:28,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:28,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash 6346, now seen corresponding path program 1 times [2025-01-10 00:55:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913475914] [2025-01-10 00:55:28,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:28,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:28,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:28,524 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 00:55:28,525 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 00:55:28,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-01-10 00:55:28,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-01-10 00:55:28,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:28,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:28,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:55:28,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:28,635 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 00:55:28,655 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 00:55:28,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:28,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913475914] [2025-01-10 00:55:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913475914] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:55:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015555717] [2025-01-10 00:55:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:28,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:55:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:28,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:55:28,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:55:28,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2025-01-10 00:55:28,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:55:28,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:28,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2025-01-10 00:55:28,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:28,799 INFO L124 PetriNetUnfolderBase]: 42/137 cut-off events. [2025-01-10 00:55:28,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:55:28,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 137 events. 42/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 527 event pairs, 42 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 235. Up to 100 conditions per place. [2025-01-10 00:55:28,800 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 14 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2025-01-10 00:55:28,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 92 flow [2025-01-10 00:55:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:55:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:55:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-01-10 00:55:28,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-01-10 00:55:28,805 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 62 flow. Second operand 3 states and 56 transitions. [2025-01-10 00:55:28,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 92 flow [2025-01-10 00:55:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:55:28,805 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 60 flow [2025-01-10 00:55:28,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2025-01-10 00:55:28,810 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-01-10 00:55:28,810 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 60 flow [2025-01-10 00:55:28,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:55:28,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:28,810 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:28,824 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 00:55:29,011 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 00:55:29,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:29,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1494864398, now seen corresponding path program 1 times [2025-01-10 00:55:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:29,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914969656] [2025-01-10 00:55:29,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:29,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:29,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:29,014 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 00:55:29,015 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 00:55:29,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:55:29,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:55:29,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:29,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:29,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:55:29,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:29,070 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 00:55:29,093 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 00:55:29,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:29,093 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914969656] [2025-01-10 00:55:29,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914969656] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:29,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:29,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:55:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366328997] [2025-01-10 00:55:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:29,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:55:29,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:29,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:55:29,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:55:29,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-01-10 00:55:29,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:29,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:29,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-01-10 00:55:29,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:29,211 INFO L124 PetriNetUnfolderBase]: 42/130 cut-off events. [2025-01-10 00:55:29,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:55:29,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 130 events. 42/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 469 event pairs, 22 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 228. Up to 75 conditions per place. [2025-01-10 00:55:29,212 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2025-01-10 00:55:29,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 116 flow [2025-01-10 00:55:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:55:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:55:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-01-10 00:55:29,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2025-01-10 00:55:29,213 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 4 states and 73 transitions. [2025-01-10 00:55:29,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 116 flow [2025-01-10 00:55:29,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:55:29,214 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2025-01-10 00:55:29,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2025-01-10 00:55:29,215 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-01-10 00:55:29,215 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2025-01-10 00:55:29,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:29,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:29,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:29,221 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 00:55:29,415 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 00:55:29,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:29,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1494864399, now seen corresponding path program 1 times [2025-01-10 00:55:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038143053] [2025-01-10 00:55:29,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:29,420 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 00:55:29,422 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 00:55:29,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:55:29,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:55:29,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:29,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:29,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:55:29,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:29,501 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 00:55:29,570 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 00:55:29,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:29,570 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038143053] [2025-01-10 00:55:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038143053] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:29,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:29,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:55:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139330577] [2025-01-10 00:55:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:29,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:55:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:29,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:55:29,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:55:29,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-01-10 00:55:29,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:29,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:29,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-01-10 00:55:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:29,708 INFO L124 PetriNetUnfolderBase]: 42/120 cut-off events. [2025-01-10 00:55:29,709 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 00:55:29,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 120 events. 42/120 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 414 event pairs, 7 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 230. Up to 75 conditions per place. [2025-01-10 00:55:29,711 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 18 selfloop transitions, 3 changer transitions 2/30 dead transitions. [2025-01-10 00:55:29,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 114 flow [2025-01-10 00:55:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:55:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:55:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-01-10 00:55:29,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2025-01-10 00:55:29,713 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 4 states and 73 transitions. [2025-01-10 00:55:29,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 114 flow [2025-01-10 00:55:29,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:55:29,714 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 52 flow [2025-01-10 00:55:29,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2025-01-10 00:55:29,717 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2025-01-10 00:55:29,717 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 52 flow [2025-01-10 00:55:29,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:29,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:29,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:29,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:55:29,918 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 00:55:29,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:29,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1494257324, now seen corresponding path program 1 times [2025-01-10 00:55:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696533260] [2025-01-10 00:55:29,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:29,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:29,924 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 00:55:29,926 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 00:55:29,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:55:29,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:55:29,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:29,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:29,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:55:29,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:30,007 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 00:55:30,037 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 00:55:30,037 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:30,037 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696533260] [2025-01-10 00:55:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696533260] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:30,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:55:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651387093] [2025-01-10 00:55:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:30,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:55:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:30,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:55:30,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:55:30,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-01-10 00:55:30,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-01-10 00:55:30,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:30,131 INFO L124 PetriNetUnfolderBase]: 36/100 cut-off events. [2025-01-10 00:55:30,131 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 00:55:30,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 100 events. 36/100 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 307 event pairs, 18 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 195. Up to 65 conditions per place. [2025-01-10 00:55:30,132 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 18 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2025-01-10 00:55:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 106 flow [2025-01-10 00:55:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:55:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:55:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-01-10 00:55:30,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2025-01-10 00:55:30,135 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 52 flow. Second operand 4 states and 71 transitions. [2025-01-10 00:55:30,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 106 flow [2025-01-10 00:55:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:55:30,138 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 48 flow [2025-01-10 00:55:30,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2025-01-10 00:55:30,138 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2025-01-10 00:55:30,138 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 48 flow [2025-01-10 00:55:30,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:30,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:30,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:30,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 00:55:30,339 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 00:55:30,340 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:30,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1494257325, now seen corresponding path program 1 times [2025-01-10 00:55:30,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592362072] [2025-01-10 00:55:30,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:30,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:30,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:30,343 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 00:55:30,344 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 00:55:30,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:55:30,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:55:30,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:30,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:30,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:55:30,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:30,407 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 00:55:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:55:30,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:55:30,461 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:55:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592362072] [2025-01-10 00:55:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592362072] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:55:30,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:55:30,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:55:30,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690150984] [2025-01-10 00:55:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:55:30,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:55:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:55:30,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:55:30,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:55:30,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2025-01-10 00:55:30,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:30,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:30,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2025-01-10 00:55:30,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:30,571 INFO L124 PetriNetUnfolderBase]: 36/95 cut-off events. [2025-01-10 00:55:30,571 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 00:55:30,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 36/95 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 271 event pairs, 18 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 190. Up to 65 conditions per place. [2025-01-10 00:55:30,572 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 18 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2025-01-10 00:55:30,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 98 flow [2025-01-10 00:55:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:55:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:55:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-01-10 00:55:30,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2025-01-10 00:55:30,573 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 48 flow. Second operand 4 states and 71 transitions. [2025-01-10 00:55:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 98 flow [2025-01-10 00:55:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 24 transitions, 92 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:55:30,574 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 44 flow [2025-01-10 00:55:30,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2025-01-10 00:55:30,574 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -9 predicate places. [2025-01-10 00:55:30,574 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 44 flow [2025-01-10 00:55:30,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 00:55:30,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:30,575 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:30,581 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 00:55:30,775 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 00:55:30,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-01-10 00:55:30,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash 737416442, now seen corresponding path program 1 times [2025-01-10 00:55:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:55:30,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507178946] [2025-01-10 00:55:30,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:55:30,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:30,779 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 00:55:30,780 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 00:55:30,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:55:30,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:55:30,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:30,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:55:30,840 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:55:30,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:55:30,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:55:30,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:30,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:55:30,875 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 00:55:30,876 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:55:30,876 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2025-01-10 00:55:30,877 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2025-01-10 00:55:30,878 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2025-01-10 00:55:30,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2025-01-10 00:55:30,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2025-01-10 00:55:30,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2025-01-10 00:55:30,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 16 remaining) [2025-01-10 00:55:30,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:55:31,079 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 00:55:31,080 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:31,099 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 00:55:31,100 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 00:55:31,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:55:31 BasicIcfg [2025-01-10 00:55:31,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 00:55:31,104 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 00:55:31,104 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 00:55:31,104 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 00:55:31,105 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:55:27" (3/4) ... [2025-01-10 00:55:31,106 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 00:55:31,107 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 00:55:31,107 INFO L158 Benchmark]: Toolchain (without parser) took 4191.14ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 89.3MB in the beginning and 139.3MB in the end (delta: -50.0MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2025-01-10 00:55:31,108 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:55:31,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.43ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 59.7MB in the end (delta: 29.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:55:31,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.28ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:55:31,108 INFO L158 Benchmark]: Boogie Preprocessor took 24.35ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 56.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:55:31,108 INFO L158 Benchmark]: RCFGBuilder took 458.49ms. Allocated memory is still 117.4MB. Free memory was 56.1MB in the beginning and 75.0MB in the end (delta: -18.9MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2025-01-10 00:55:31,109 INFO L158 Benchmark]: TraceAbstraction took 3155.94ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 74.0MB in the beginning and 140.1MB in the end (delta: -66.1MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2025-01-10 00:55:31,109 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 234.9MB. Free memory was 140.1MB in the beginning and 139.3MB in the end (delta: 799.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:55:31,110 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.43ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 59.7MB in the end (delta: 29.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.28ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.35ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 56.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 458.49ms. Allocated memory is still 117.4MB. Free memory was 56.1MB in the beginning and 75.0MB in the end (delta: -18.9MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3155.94ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 74.0MB in the beginning and 140.1MB in the end (delta: -66.1MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 234.9MB. Free memory was 140.1MB in the beginning and 139.3MB in the end (delta: 799.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3008]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3008. Possible FailurePath: [L2989-L2993] 0 struct s { int datum; pthread_mutex_t mutex; int list; } *A; [L3009] 0 pthread_t t1; [L3010] 0 A = malloc(sizeof(struct s)) [L3011] CALL 0 init(A,666) [L2995] 0 p->datum = x [L3011] RET 0 init(A,666) [L3012] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={1:0}, t1=0] [L3013] CALL 0 update(&A->list) [L2999] 0 struct s *s = ((struct s *)((char *)(p)-(unsigned long)__builtin_offsetof (struct s, list))); VAL [A={1:0}, \old(p)={1:28}, p={1:28}, s={1:0}] [L3001] EXPR 0 s->datum [L3001] 0 s->datum++ VAL [A={1:0}, \old(p)={1:28}, p={1:28}, s={1:0}] [L3001] 0 s->datum++ [L3013] RET 0 update(&A->list) [L3014] 0 return 0; VAL [A={1:0}, \result=0, t1=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3012]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 44 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 224 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 305 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 15 mSDtfsCounter, 305 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=1, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 26 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 00:55:31,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample