./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/heap-manipulation/bubble_sort_linux-1.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:35:05,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:35:05,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:35:05,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:35:05,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:35:05,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:35:05,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:35:05,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:35:05,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:35:05,755 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:35:05,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:35:05,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:35:05,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:35:05,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:35:05,757 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:35:05,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:35:05,757 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:35:05,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:35:05,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:35:05,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:35:05,758 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:35:05,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:35:05,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:35:05,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:35:05,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:35:05,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:35:05,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:35:05,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:35:05,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:35:05,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:35:05,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:35:05,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:35:05,760 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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2025-02-08 06:35:05,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:35:06,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:35:06,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:35:06,003 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:35:06,003 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:35:06,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-02-08 06:35:07,218 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/07bf1bd4e/1a3e4dc08c5f42d28197549e7cf0c72a/FLAG97485663d [2025-02-08 06:35:07,535 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:35:07,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-02-08 06:35:07,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/07bf1bd4e/1a3e4dc08c5f42d28197549e7cf0c72a/FLAG97485663d [2025-02-08 06:35:07,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/07bf1bd4e/1a3e4dc08c5f42d28197549e7cf0c72a [2025-02-08 06:35:07,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:35:07,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:35:07,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:35:07,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:35:07,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:35:07,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:35:07" (1/1) ... [2025-02-08 06:35:07,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450d5f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:07, skipping insertion in model container [2025-02-08 06:35:07,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:35:07" (1/1) ... [2025-02-08 06:35:07,818 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:35:08,063 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-02-08 06:35:08,064 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-02-08 06:35:08,064 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-02-08 06:35:08,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:35:08,099 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) [2025-02-08 06:35:08,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c8193d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:08, skipping insertion in model container [2025-02-08 06:35:08,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:35:08,100 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 06:35:08,103 INFO L158 Benchmark]: Toolchain (without parser) took 315.45ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 114.9MB in the end (delta: 14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 06:35:08,103 INFO L158 Benchmark]: CDTParser took 0.91ms. Allocated memory is still 201.3MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 06:35:08,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.89ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 114.9MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 06:35:08,104 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91ms. Allocated memory is still 201.3MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.89ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 114.9MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/heap-manipulation/bubble_sort_linux-1.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:35:09,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:35:10,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 06:35:10,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:35:10,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:35:10,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:35:10,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:35:10,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:35:10,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:35:10,083 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:35:10,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:35:10,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:35:10,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:35:10,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:35:10,084 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:35:10,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:35:10,085 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:35:10,086 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:35:10,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:35:10,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:35:10,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:35:10,087 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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2025-02-08 06:35:10,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:35:10,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:35:10,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:35:10,362 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:35:10,362 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:35:10,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-02-08 06:35:11,693 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a37782c66/f71b1289540a443aba8f02d26634f2aa/FLAGb57442cd1 [2025-02-08 06:35:11,944 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:35:11,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-02-08 06:35:11,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a37782c66/f71b1289540a443aba8f02d26634f2aa/FLAGb57442cd1 [2025-02-08 06:35:12,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a37782c66/f71b1289540a443aba8f02d26634f2aa [2025-02-08 06:35:12,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:35:12,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:35:12,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:35:12,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:35:12,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:35:12,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4573cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12, skipping insertion in model container [2025-02-08 06:35:12,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:35:12,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:35:12,593 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 06:35:12,599 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:35:12,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:35:12,660 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:35:12,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:35:12,751 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:35:12,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12 WrapperNode [2025-02-08 06:35:12,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:35:12,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:35:12,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:35:12,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:35:12,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,783 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 119 [2025-02-08 06:35:12,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:35:12,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:35:12,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:35:12,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:35:12,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,811 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2025-02-08 06:35:12,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,823 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:35:12,829 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:35:12,829 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:35:12,829 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:35:12,830 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (1/1) ... [2025-02-08 06:35:12,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:35:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:12,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 06:35:12,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2025-02-08 06:35:12,869 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:35:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2025-02-08 06:35:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-02-08 06:35:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-02-08 06:35:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-02-08 06:35:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:35:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:35:12,969 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:35:12,971 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:35:13,033 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L923: havoc #t~mem54; [2025-02-08 06:35:13,457 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L944-1: assume 0bv8 != gl_sort_#t~ret59#1;havoc gl_sort_#t~ret59#1; [2025-02-08 06:35:13,458 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L944-1: assume !(0bv8 != gl_sort_#t~ret59#1);havoc gl_sort_#t~ret59#1; [2025-02-08 06:35:13,458 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L944-2: gl_sort_#t~ret59#1 := gl_sort_pass_#res#1;havoc gl_sort_pass_#t~mem55#1.base, gl_sort_pass_#t~mem55#1.offset, gl_sort_pass_#t~mem56#1.base, gl_sort_pass_#t~mem56#1.offset, gl_sort_pass_#t~ret57#1, gl_sort_pass_#t~ret58#1, gl_sort_pass_~val0~0#1, gl_sort_pass_~val1~0#1, gl_sort_pass_~any_change~0#1, gl_sort_pass_~pos0~0#1.base, gl_sort_pass_~pos0~0#1.offset, gl_sort_pass_~pos1~0#1.base, gl_sort_pass_~pos1~0#1.offset;assume { :end_inline_gl_sort_pass } true; [2025-02-08 06:35:13,484 INFO L? ?]: Removed 172 outVars from TransFormulas that were not future-live. [2025-02-08 06:35:13,484 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:35:13,498 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:35:13,500 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:35:13,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:35:13 BoogieIcfgContainer [2025-02-08 06:35:13,500 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:35:13,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:35:13,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:35:13,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:35:13,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:35:12" (1/3) ... [2025-02-08 06:35:13,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d5a512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:35:13, skipping insertion in model container [2025-02-08 06:35:13,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:35:12" (2/3) ... [2025-02-08 06:35:13,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d5a512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:35:13, skipping insertion in model container [2025-02-08 06:35:13,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:35:13" (3/3) ... [2025-02-08 06:35:13,508 INFO L128 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2025-02-08 06:35:13,517 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:35:13,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-1.i that has 5 procedures, 237 locations, 1 initial locations, 23 loop locations, and 71 error locations. [2025-02-08 06:35:13,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:35:13,556 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;@2dfca51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:35:13,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2025-02-08 06:35:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 136 states have (on average 1.9926470588235294) internal successors, (271), 227 states have internal predecessors, (271), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-08 06:35:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 06:35:13,562 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:13,562 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 06:35:13,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:13,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash 10156669, now seen corresponding path program 1 times [2025-02-08 06:35:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:13,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334387176] [2025-02-08 06:35:13,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:13,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:13,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:13,575 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) [2025-02-08 06:35:13,577 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 [2025-02-08 06:35:13,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 06:35:13,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 06:35:13,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:13,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:13,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 06:35:13,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:13,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:13,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:13,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334387176] [2025-02-08 06:35:13,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334387176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:13,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:13,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:35:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769273498] [2025-02-08 06:35:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:13,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:35:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:13,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:35:13,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:35:13,715 INFO L87 Difference]: Start difference. First operand has 237 states, 136 states have (on average 1.9926470588235294) internal successors, (271), 227 states have internal predecessors, (271), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:13,755 INFO L93 Difference]: Finished difference Result 205 states and 223 transitions. [2025-02-08 06:35:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:35:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2025-02-08 06:35:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:13,766 INFO L225 Difference]: With dead ends: 205 [2025-02-08 06:35:13,766 INFO L226 Difference]: Without dead ends: 202 [2025-02-08 06:35:13,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:35:13,777 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:13,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:35:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-02-08 06:35:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2025-02-08 06:35:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 118 states have (on average 1.652542372881356) internal successors, (195), 192 states have internal predecessors, (195), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2025-02-08 06:35:13,870 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 4 [2025-02-08 06:35:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:13,870 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2025-02-08 06:35:13,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2025-02-08 06:35:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 06:35:13,871 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:13,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 06:35:13,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:35:14,071 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 [2025-02-08 06:35:14,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:14,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash 10156700, now seen corresponding path program 1 times [2025-02-08 06:35:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:14,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671430085] [2025-02-08 06:35:14,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:14,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:14,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:14,077 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) [2025-02-08 06:35:14,083 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 [2025-02-08 06:35:14,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 06:35:14,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 06:35:14,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:14,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:14,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 06:35:14,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:14,169 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 [2025-02-08 06:35:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:14,184 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:14,184 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671430085] [2025-02-08 06:35:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671430085] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:14,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:35:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712271207] [2025-02-08 06:35:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:14,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:35:14,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:14,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:35:14,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:35:14,187 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:14,332 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2025-02-08 06:35:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:35:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2025-02-08 06:35:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:14,334 INFO L225 Difference]: With dead ends: 199 [2025-02-08 06:35:14,334 INFO L226 Difference]: Without dead ends: 199 [2025-02-08 06:35:14,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:35:14,334 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 5 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:14,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 359 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:35:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-02-08 06:35:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-02-08 06:35:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 118 states have (on average 1.6271186440677967) internal successors, (192), 189 states have internal predecessors, (192), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 217 transitions. [2025-02-08 06:35:14,344 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 217 transitions. Word has length 4 [2025-02-08 06:35:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:14,344 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 217 transitions. [2025-02-08 06:35:14,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 217 transitions. [2025-02-08 06:35:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 06:35:14,347 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:14,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 06:35:14,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 06:35:14,547 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 [2025-02-08 06:35:14,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:14,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 10156701, now seen corresponding path program 1 times [2025-02-08 06:35:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460708732] [2025-02-08 06:35:14,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:14,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:14,550 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) [2025-02-08 06:35:14,552 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 [2025-02-08 06:35:14,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 06:35:14,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 06:35:14,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:14,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:14,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 06:35:14,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:14,644 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 [2025-02-08 06:35:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:14,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:14,658 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460708732] [2025-02-08 06:35:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460708732] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:14,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:35:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352404392] [2025-02-08 06:35:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:14,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:35:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:14,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:35:14,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:35:14,659 INFO L87 Difference]: Start difference. First operand 199 states and 217 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:14,798 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2025-02-08 06:35:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:35:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2025-02-08 06:35:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:14,800 INFO L225 Difference]: With dead ends: 196 [2025-02-08 06:35:14,800 INFO L226 Difference]: Without dead ends: 196 [2025-02-08 06:35:14,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:35:14,800 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 5 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:14,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 359 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:35:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-02-08 06:35:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-02-08 06:35:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 118 states have (on average 1.6016949152542372) internal successors, (189), 186 states have internal predecessors, (189), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2025-02-08 06:35:14,807 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 4 [2025-02-08 06:35:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:14,807 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2025-02-08 06:35:14,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2025-02-08 06:35:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:35:14,808 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:14,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:14,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 06:35:15,008 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 [2025-02-08 06:35:15,009 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:15,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1930848189, now seen corresponding path program 1 times [2025-02-08 06:35:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:15,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705544920] [2025-02-08 06:35:15,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:15,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:15,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:15,016 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) [2025-02-08 06:35:15,016 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 [2025-02-08 06:35:15,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:35:15,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:35:15,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:15,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:15,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 06:35:15,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:15,158 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-08 06:35:15,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-08 06:35:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:15,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:15,212 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705544920] [2025-02-08 06:35:15,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705544920] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:15,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:15,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:35:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337517589] [2025-02-08 06:35:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:15,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:35:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:15,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:35:15,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:35:15,213 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:15,458 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2025-02-08 06:35:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:35:15,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:35:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:15,460 INFO L225 Difference]: With dead ends: 214 [2025-02-08 06:35:15,460 INFO L226 Difference]: Without dead ends: 214 [2025-02-08 06:35:15,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:35:15,461 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 245 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:15,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 401 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:35:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-08 06:35:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 205. [2025-02-08 06:35:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 127 states have (on average 1.6220472440944882) internal successors, (206), 194 states have internal predecessors, (206), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 231 transitions. [2025-02-08 06:35:15,467 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 231 transitions. Word has length 7 [2025-02-08 06:35:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:15,467 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 231 transitions. [2025-02-08 06:35:15,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 231 transitions. [2025-02-08 06:35:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:35:15,468 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:15,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:15,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 06:35:15,672 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 [2025-02-08 06:35:15,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:15,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1930848190, now seen corresponding path program 1 times [2025-02-08 06:35:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119219153] [2025-02-08 06:35:15,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:15,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:15,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:15,678 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) [2025-02-08 06:35:15,679 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 [2025-02-08 06:35:15,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:35:15,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:35:15,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:15,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:15,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:35:15,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:15,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:15,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:35:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:15,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:15,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119219153] [2025-02-08 06:35:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119219153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:15,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:15,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:35:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472812272] [2025-02-08 06:35:15,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:15,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:35:15,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:15,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:35:15,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:35:15,824 INFO L87 Difference]: Start difference. First operand 205 states and 231 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:16,201 INFO L93 Difference]: Finished difference Result 212 states and 229 transitions. [2025-02-08 06:35:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:35:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:35:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:16,203 INFO L225 Difference]: With dead ends: 212 [2025-02-08 06:35:16,203 INFO L226 Difference]: Without dead ends: 212 [2025-02-08 06:35:16,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:35:16,204 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 244 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:16,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 325 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:35:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-02-08 06:35:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2025-02-08 06:35:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 127 states have (on average 1.6062992125984252) internal successors, (204), 193 states have internal predecessors, (204), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 229 transitions. [2025-02-08 06:35:16,213 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 229 transitions. Word has length 7 [2025-02-08 06:35:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:16,213 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 229 transitions. [2025-02-08 06:35:16,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 229 transitions. [2025-02-08 06:35:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:35:16,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:16,214 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:16,222 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 [2025-02-08 06:35:16,414 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 [2025-02-08 06:35:16,414 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:16,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 119243162, now seen corresponding path program 1 times [2025-02-08 06:35:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:16,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089004176] [2025-02-08 06:35:16,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:16,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:16,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:16,419 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) [2025-02-08 06:35:16,422 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 [2025-02-08 06:35:16,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:35:16,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:35:16,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:16,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:16,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 06:35:16,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:16,524 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:16,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:16,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:16,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:16,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089004176] [2025-02-08 06:35:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089004176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:16,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 06:35:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831557846] [2025-02-08 06:35:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:16,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:35:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:16,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:35:16,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:35:16,611 INFO L87 Difference]: Start difference. First operand 204 states and 229 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:17,015 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2025-02-08 06:35:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:35:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:35:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:17,018 INFO L225 Difference]: With dead ends: 216 [2025-02-08 06:35:17,018 INFO L226 Difference]: Without dead ends: 216 [2025-02-08 06:35:17,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-02-08 06:35:17,019 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 17 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:17,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1193 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:35:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-02-08 06:35:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2025-02-08 06:35:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 134 states have (on average 1.5820895522388059) internal successors, (212), 200 states have internal predecessors, (212), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 239 transitions. [2025-02-08 06:35:17,025 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 239 transitions. Word has length 9 [2025-02-08 06:35:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:17,025 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 239 transitions. [2025-02-08 06:35:17,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 239 transitions. [2025-02-08 06:35:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:35:17,026 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:17,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:17,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:35:17,226 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 [2025-02-08 06:35:17,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:17,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash 119243163, now seen corresponding path program 1 times [2025-02-08 06:35:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486058465] [2025-02-08 06:35:17,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:17,229 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) [2025-02-08 06:35:17,230 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 [2025-02-08 06:35:17,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:35:17,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:35:17,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:17,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:17,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 06:35:17,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:17,345 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 06:35:17,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-08 06:35:17,362 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:17,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:17,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:17,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:17,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:17,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:17,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486058465] [2025-02-08 06:35:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486058465] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:17,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 06:35:17,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554305963] [2025-02-08 06:35:17,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:17,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:35:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:17,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:35:17,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:35:17,527 INFO L87 Difference]: Start difference. First operand 212 states and 239 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:18,043 INFO L93 Difference]: Finished difference Result 218 states and 244 transitions. [2025-02-08 06:35:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:35:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:35:18,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:18,044 INFO L225 Difference]: With dead ends: 218 [2025-02-08 06:35:18,044 INFO L226 Difference]: Without dead ends: 218 [2025-02-08 06:35:18,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-02-08 06:35:18,045 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 26 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:18,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 936 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:35:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-02-08 06:35:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 212. [2025-02-08 06:35:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 134 states have (on average 1.5746268656716418) internal successors, (211), 200 states have internal predecessors, (211), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 238 transitions. [2025-02-08 06:35:18,050 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 238 transitions. Word has length 9 [2025-02-08 06:35:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:18,050 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 238 transitions. [2025-02-08 06:35:18,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 238 transitions. [2025-02-08 06:35:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:35:18,050 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:18,050 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:18,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 06:35:18,251 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 [2025-02-08 06:35:18,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:18,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -598429111, now seen corresponding path program 1 times [2025-02-08 06:35:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:18,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14415298] [2025-02-08 06:35:18,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:18,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:18,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:18,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:18,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 06:35:18,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:35:18,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:35:18,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:18,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:18,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 06:35:18,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:18,343 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:18,343 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14415298] [2025-02-08 06:35:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14415298] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:35:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823230299] [2025-02-08 06:35:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:18,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:35:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:18,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:35:18,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:35:18,344 INFO L87 Difference]: Start difference. First operand 212 states and 238 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:18,590 INFO L93 Difference]: Finished difference Result 217 states and 235 transitions. [2025-02-08 06:35:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:35:18,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 06:35:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:18,591 INFO L225 Difference]: With dead ends: 217 [2025-02-08 06:35:18,591 INFO L226 Difference]: Without dead ends: 217 [2025-02-08 06:35:18,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:35:18,592 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 29 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:18,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 779 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:35:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-08 06:35:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2025-02-08 06:35:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 134 states have (on average 1.5522388059701493) internal successors, (208), 199 states have internal predecessors, (208), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 235 transitions. [2025-02-08 06:35:18,596 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 235 transitions. Word has length 10 [2025-02-08 06:35:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:18,596 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 235 transitions. [2025-02-08 06:35:18,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 235 transitions. [2025-02-08 06:35:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:35:18,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:18,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:18,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 06:35:18,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:18,801 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:18,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash -598429110, now seen corresponding path program 1 times [2025-02-08 06:35:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291983788] [2025-02-08 06:35:18,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:18,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:18,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:18,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 06:35:18,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:35:18,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:35:18,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:18,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:18,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 06:35:18,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:18,886 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 [2025-02-08 06:35:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:18,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:18,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291983788] [2025-02-08 06:35:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291983788] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:18,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:18,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:35:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363600232] [2025-02-08 06:35:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:18,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:35:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:18,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:35:18,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:35:18,943 INFO L87 Difference]: Start difference. First operand 211 states and 235 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:19,258 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2025-02-08 06:35:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:35:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 06:35:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:19,260 INFO L225 Difference]: With dead ends: 215 [2025-02-08 06:35:19,260 INFO L226 Difference]: Without dead ends: 215 [2025-02-08 06:35:19,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:35:19,260 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 23 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:19,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 784 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:35:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-02-08 06:35:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2025-02-08 06:35:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 134 states have (on average 1.537313432835821) internal successors, (206), 199 states have internal predecessors, (206), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 233 transitions. [2025-02-08 06:35:19,264 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 233 transitions. Word has length 10 [2025-02-08 06:35:19,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:19,265 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 233 transitions. [2025-02-08 06:35:19,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 233 transitions. [2025-02-08 06:35:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:35:19,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:19,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:19,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 06:35:19,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:19,466 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:19,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 435247110, now seen corresponding path program 1 times [2025-02-08 06:35:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:19,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518640272] [2025-02-08 06:35:19,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:19,469 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:19,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:35:19,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:35:19,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:35:19,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:19,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:19,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 06:35:19,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:19,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:19,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518640272] [2025-02-08 06:35:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518640272] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:35:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193908342] [2025-02-08 06:35:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:19,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:35:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:19,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:35:19,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:35:19,551 INFO L87 Difference]: Start difference. First operand 211 states and 233 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:19,677 INFO L93 Difference]: Finished difference Result 210 states and 231 transitions. [2025-02-08 06:35:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:35:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 06:35:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:19,678 INFO L225 Difference]: With dead ends: 210 [2025-02-08 06:35:19,678 INFO L226 Difference]: Without dead ends: 210 [2025-02-08 06:35:19,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:35:19,678 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 5 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:19,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 500 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:35:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-02-08 06:35:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2025-02-08 06:35:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 134 states have (on average 1.5223880597014925) internal successors, (204), 198 states have internal predecessors, (204), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2025-02-08 06:35:19,682 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 12 [2025-02-08 06:35:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:19,682 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2025-02-08 06:35:19,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2025-02-08 06:35:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:35:19,683 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:19,683 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:19,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:35:19,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:19,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:19,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 435247111, now seen corresponding path program 1 times [2025-02-08 06:35:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901930971] [2025-02-08 06:35:19,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:19,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:19,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:35:19,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:35:19,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:35:19,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:19,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:19,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 06:35:19,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:20,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:20,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901930971] [2025-02-08 06:35:20,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901930971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:20,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:20,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:35:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568705744] [2025-02-08 06:35:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:20,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:35:20,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:20,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:35:20,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:35:20,054 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:20,350 INFO L93 Difference]: Finished difference Result 212 states and 230 transitions. [2025-02-08 06:35:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:35:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 06:35:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:20,355 INFO L225 Difference]: With dead ends: 212 [2025-02-08 06:35:20,355 INFO L226 Difference]: Without dead ends: 212 [2025-02-08 06:35:20,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:35:20,356 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 229 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:20,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 739 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:35:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-02-08 06:35:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2025-02-08 06:35:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 198 states have internal predecessors, (203), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 230 transitions. [2025-02-08 06:35:20,363 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 230 transitions. Word has length 12 [2025-02-08 06:35:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:20,364 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 230 transitions. [2025-02-08 06:35:20,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:35:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 230 transitions. [2025-02-08 06:35:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:35:20,368 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:20,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:20,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 06:35:20,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:20,569 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:20,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2091783437, now seen corresponding path program 1 times [2025-02-08 06:35:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:20,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644721655] [2025-02-08 06:35:20,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:20,571 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:20,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 06:35:20,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:20,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:20,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:20,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:20,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-08 06:35:20,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:20,768 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-02-08 06:35:20,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-02-08 06:35:21,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:21,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:21,301 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:21,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2025-02-08 06:35:21,446 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2025-02-08 06:35:21,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2025-02-08 06:35:21,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2025-02-08 06:35:21,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-02-08 06:35:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:21,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:35:21,943 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_273 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_17| (_ BitVec 32)) (v_ArrVal_274 (_ BitVec 1)) (v_ArrVal_275 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_274) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_273) |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_275) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2025-02-08 06:35:22,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:22,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2025-02-08 06:35:22,046 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:22,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2025-02-08 06:35:22,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-08 06:35:22,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644721655] [2025-02-08 06:35:22,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644721655] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:35:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1609446055] [2025-02-08 06:35:22,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:22,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 06:35:22,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 06:35:22,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 06:35:22,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2025-02-08 06:35:22,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:22,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:22,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:22,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:22,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-08 06:35:22,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:22,938 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2025-02-08 06:35:22,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2025-02-08 06:35:23,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:23,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:23,995 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:23,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2025-02-08 06:35:24,273 INFO L349 Elim1Store]: treesize reduction 122, result has 30.3 percent of original size [2025-02-08 06:35:24,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 76 [2025-02-08 06:35:24,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2025-02-08 06:35:24,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2025-02-08 06:35:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:24,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:35:24,906 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_17| (_ BitVec 32)) (v_ArrVal_274 (_ BitVec 1)) (v_ArrVal_275 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_274) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_350) |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_275) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2025-02-08 06:35:24,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:24,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2025-02-08 06:35:24,980 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:24,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2025-02-08 06:35:24,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-08 06:35:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1609446055] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:35:25,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:35:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2025-02-08 06:35:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509768118] [2025-02-08 06:35:25,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:35:25,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-08 06:35:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:25,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-08 06:35:25,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1218, Unknown=13, NotChecked=146, Total=1560 [2025-02-08 06:35:25,092 INFO L87 Difference]: Start difference. First operand 210 states and 230 transitions. Second operand has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:35:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:27,948 INFO L93 Difference]: Finished difference Result 241 states and 260 transitions. [2025-02-08 06:35:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:35:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-02-08 06:35:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:27,949 INFO L225 Difference]: With dead ends: 241 [2025-02-08 06:35:27,949 INFO L226 Difference]: Without dead ends: 241 [2025-02-08 06:35:27,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=294, Invalid=1593, Unknown=13, NotChecked=170, Total=2070 [2025-02-08 06:35:27,950 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 387 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:27,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 2447 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 06:35:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-08 06:35:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 210. [2025-02-08 06:35:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 134 states have (on average 1.507462686567164) internal successors, (202), 198 states have internal predecessors, (202), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:35:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 229 transitions. [2025-02-08 06:35:27,955 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 229 transitions. Word has length 29 [2025-02-08 06:35:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:27,955 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 229 transitions. [2025-02-08 06:35:27,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:35:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 229 transitions. [2025-02-08 06:35:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:35:27,955 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:27,956 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:27,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2025-02-08 06:35:28,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 06:35:28,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:28,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:28,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2091783438, now seen corresponding path program 1 times [2025-02-08 06:35:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038708274] [2025-02-08 06:35:28,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:28,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:28,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:28,370 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:28,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 06:35:28,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:28,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:28,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:28,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:28,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-08 06:35:28,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:28,516 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 [2025-02-08 06:35:28,525 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:28,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:28,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:28,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:28,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:28,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:29,030 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:29,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2025-02-08 06:35:29,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-02-08 06:35:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:29,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:29,167 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-02-08 06:35:29,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2025-02-08 06:35:29,187 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2025-02-08 06:35:29,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2025-02-08 06:35:29,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-02-08 06:35:29,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:29,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-08 06:35:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:29,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:35:30,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:30,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2025-02-08 06:35:30,835 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:30,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2025-02-08 06:35:30,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:30,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2025-02-08 06:35:30,857 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:30,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 76 [2025-02-08 06:35:30,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:30,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2025-02-08 06:35:30,871 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:30,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2025-02-08 06:35:30,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-08 06:35:30,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-08 06:35:31,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038708274] [2025-02-08 06:35:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038708274] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:35:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [516916731] [2025-02-08 06:35:31,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:31,176 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 06:35:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 06:35:31,178 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 06:35:31,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2025-02-08 06:35:31,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:31,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:31,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:31,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:31,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-08 06:35:31,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:31,713 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 [2025-02-08 06:35:31,732 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-02-08 06:35:31,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-02-08 06:35:32,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:32,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:32,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:33,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:33,036 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:33,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2025-02-08 06:35:33,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-02-08 06:35:33,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:33,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:33,251 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-02-08 06:35:33,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2025-02-08 06:35:33,281 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2025-02-08 06:35:33,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2025-02-08 06:35:33,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:33,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-02-08 06:35:33,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-08 06:35:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:33,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:35:33,837 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_517) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_516 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_517) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_516) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2025-02-08 06:35:35,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:35,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2025-02-08 06:35:35,259 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:35,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 76 [2025-02-08 06:35:35,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:35,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2025-02-08 06:35:35,274 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:35,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2025-02-08 06:35:35,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-08 06:35:35,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-08 06:35:35,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:35:35,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2025-02-08 06:35:35,370 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:35:35,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2025-02-08 06:35:35,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [516916731] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:35:35,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:35:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2025-02-08 06:35:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644098472] [2025-02-08 06:35:35,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:35:35,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 06:35:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:35,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 06:35:35,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1439, Unknown=27, NotChecked=78, Total=1722 [2025-02-08 06:35:35,585 INFO L87 Difference]: Start difference. First operand 210 states and 229 transitions. Second operand has 31 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:35:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:40,357 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2025-02-08 06:35:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 06:35:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-02-08 06:35:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:40,362 INFO L225 Difference]: With dead ends: 240 [2025-02-08 06:35:40,363 INFO L226 Difference]: Without dead ends: 240 [2025-02-08 06:35:40,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=319, Invalid=1914, Unknown=27, NotChecked=92, Total=2352 [2025-02-08 06:35:40,364 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 745 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:40,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1625 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-02-08 06:35:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-02-08 06:35:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 202. [2025-02-08 06:35:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 127 states have (on average 1.5275590551181102) internal successors, (194), 191 states have internal predecessors, (194), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 219 transitions. [2025-02-08 06:35:40,371 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 219 transitions. Word has length 29 [2025-02-08 06:35:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:40,372 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 219 transitions. [2025-02-08 06:35:40,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:35:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 219 transitions. [2025-02-08 06:35:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 06:35:40,376 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:40,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:40,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 06:35:40,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2025-02-08 06:35:40,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-08 06:35:40,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:40,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash -344947023, now seen corresponding path program 1 times [2025-02-08 06:35:40,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135658416] [2025-02-08 06:35:40,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:40,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:40,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:40,781 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:40,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 06:35:40,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 06:35:40,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 06:35:40,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:40,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:40,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 06:35:40,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:40,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:40,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135658416] [2025-02-08 06:35:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135658416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:40,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:35:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481021985] [2025-02-08 06:35:40,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:35:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:40,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:35:40,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:35:40,942 INFO L87 Difference]: Start difference. First operand 202 states and 219 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:41,090 INFO L93 Difference]: Finished difference Result 201 states and 217 transitions. [2025-02-08 06:35:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:35:41,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2025-02-08 06:35:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:41,091 INFO L225 Difference]: With dead ends: 201 [2025-02-08 06:35:41,091 INFO L226 Difference]: Without dead ends: 201 [2025-02-08 06:35:41,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:35:41,092 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 301 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:41,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 422 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:35:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-02-08 06:35:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-02-08 06:35:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 127 states have (on average 1.5196850393700787) internal successors, (193), 190 states have internal predecessors, (193), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 217 transitions. [2025-02-08 06:35:41,095 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 217 transitions. Word has length 30 [2025-02-08 06:35:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:41,095 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 217 transitions. [2025-02-08 06:35:41,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 217 transitions. [2025-02-08 06:35:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:35:41,096 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:41,096 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:41,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 06:35:41,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:41,297 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting inspectErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:41,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -426884230, now seen corresponding path program 1 times [2025-02-08 06:35:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:41,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660925107] [2025-02-08 06:35:41,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:41,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:41,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:41,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 06:35:41,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:41,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:41,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:41,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:41,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 06:35:41,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:41,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:41,468 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660925107] [2025-02-08 06:35:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660925107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:35:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397398353] [2025-02-08 06:35:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:41,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:35:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:41,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:35:41,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:35:41,469 INFO L87 Difference]: Start difference. First operand 201 states and 217 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:42,047 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2025-02-08 06:35:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:35:42,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2025-02-08 06:35:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:42,049 INFO L225 Difference]: With dead ends: 196 [2025-02-08 06:35:42,049 INFO L226 Difference]: Without dead ends: 196 [2025-02-08 06:35:42,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:35:42,049 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 381 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:42,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 419 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:35:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-02-08 06:35:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-02-08 06:35:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 185 states have internal predecessors, (188), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 212 transitions. [2025-02-08 06:35:42,053 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 212 transitions. Word has length 29 [2025-02-08 06:35:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:42,053 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 212 transitions. [2025-02-08 06:35:42,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 212 transitions. [2025-02-08 06:35:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:35:42,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:42,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:42,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 06:35:42,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:42,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting inspectErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:42,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash -426884229, now seen corresponding path program 1 times [2025-02-08 06:35:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354944184] [2025-02-08 06:35:42,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:42,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:42,260 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:42,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 06:35:42,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:35:42,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:35:42,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:42,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:42,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:35:42,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:42,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:42,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354944184] [2025-02-08 06:35:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354944184] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:35:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465620462] [2025-02-08 06:35:42,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:42,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:35:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:42,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:35:42,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:35:42,549 INFO L87 Difference]: Start difference. First operand 196 states and 212 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:43,346 INFO L93 Difference]: Finished difference Result 195 states and 211 transitions. [2025-02-08 06:35:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:35:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2025-02-08 06:35:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:43,347 INFO L225 Difference]: With dead ends: 195 [2025-02-08 06:35:43,347 INFO L226 Difference]: Without dead ends: 195 [2025-02-08 06:35:43,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:35:43,352 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:43,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 468 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 06:35:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-02-08 06:35:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2025-02-08 06:35:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 127 states have (on average 1.4724409448818898) internal successors, (187), 184 states have internal predecessors, (187), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2025-02-08 06:35:43,355 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 29 [2025-02-08 06:35:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:43,355 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2025-02-08 06:35:43,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2025-02-08 06:35:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 06:35:43,355 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:43,355 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:43,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 06:35:43,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:43,556 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:43,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash 793818479, now seen corresponding path program 1 times [2025-02-08 06:35:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873050240] [2025-02-08 06:35:43,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:43,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:43,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 06:35:43,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 06:35:43,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 06:35:43,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:43,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:43,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 06:35:43,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:43,688 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:43,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:43,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:35:43,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:43,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:44,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:44,004 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:44,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873050240] [2025-02-08 06:35:44,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873050240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:44,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:44,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 06:35:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786711314] [2025-02-08 06:35:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:44,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:35:44,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:44,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:35:44,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:35:44,006 INFO L87 Difference]: Start difference. First operand 195 states and 211 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:45,110 INFO L93 Difference]: Finished difference Result 231 states and 248 transitions. [2025-02-08 06:35:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:35:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2025-02-08 06:35:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:45,112 INFO L225 Difference]: With dead ends: 231 [2025-02-08 06:35:45,112 INFO L226 Difference]: Without dead ends: 231 [2025-02-08 06:35:45,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2025-02-08 06:35:45,112 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 518 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:45,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 926 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 06:35:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-08 06:35:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 194. [2025-02-08 06:35:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 127 states have (on average 1.4645669291338583) internal successors, (186), 183 states have internal predecessors, (186), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2025-02-08 06:35:45,116 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 34 [2025-02-08 06:35:45,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:45,117 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2025-02-08 06:35:45,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2025-02-08 06:35:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 06:35:45,117 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:45,117 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:45,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 06:35:45,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:45,318 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting inspectErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:45,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:45,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1498536523, now seen corresponding path program 1 times [2025-02-08 06:35:45,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:45,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627398373] [2025-02-08 06:35:45,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:45,321 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:45,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 06:35:45,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 06:35:45,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 06:35:45,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:45,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:45,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 06:35:45,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:45,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:45,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:35:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:45,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:45,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:45,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627398373] [2025-02-08 06:35:45,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627398373] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:45,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:35:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926770990] [2025-02-08 06:35:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:45,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:35:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:45,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:35:45,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:35:45,666 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:46,117 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2025-02-08 06:35:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:35:46,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2025-02-08 06:35:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:46,118 INFO L225 Difference]: With dead ends: 192 [2025-02-08 06:35:46,118 INFO L226 Difference]: Without dead ends: 192 [2025-02-08 06:35:46,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:35:46,119 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 450 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:46,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 214 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:35:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-02-08 06:35:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-02-08 06:35:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 181 states have internal predecessors, (184), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 06:35:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 207 transitions. [2025-02-08 06:35:46,122 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 207 transitions. Word has length 33 [2025-02-08 06:35:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:46,122 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 207 transitions. [2025-02-08 06:35:46,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 207 transitions. [2025-02-08 06:35:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 06:35:46,123 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:46,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:46,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 06:35:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:46,323 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:46,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1271311443, now seen corresponding path program 1 times [2025-02-08 06:35:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188392778] [2025-02-08 06:35:46,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:46,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:46,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:46,326 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:46,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 06:35:46,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 06:35:46,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 06:35:46,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:46,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:46,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-08 06:35:46,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:46,478 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:46,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:46,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:46,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:47,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:35:47,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2025-02-08 06:35:47,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:47,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2025-02-08 06:35:47,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-02-08 06:35:47,616 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:47,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2025-02-08 06:35:47,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-08 06:35:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:47,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:47,897 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188392778] [2025-02-08 06:35:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188392778] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-02-08 06:35:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799943180] [2025-02-08 06:35:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:47,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:35:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:47,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:35:47,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=227, Unknown=9, NotChecked=0, Total=272 [2025-02-08 06:35:47,898 INFO L87 Difference]: Start difference. First operand 192 states and 207 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:52,240 INFO L93 Difference]: Finished difference Result 361 states and 390 transitions. [2025-02-08 06:35:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 06:35:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2025-02-08 06:35:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:52,243 INFO L225 Difference]: With dead ends: 361 [2025-02-08 06:35:52,243 INFO L226 Difference]: Without dead ends: 361 [2025-02-08 06:35:52,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=541, Unknown=17, NotChecked=0, Total=650 [2025-02-08 06:35:52,243 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 382 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 33 mSolverCounterUnsat, 160 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 160 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:52,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 786 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2151 Invalid, 160 Unknown, 0 Unchecked, 3.9s Time] [2025-02-08 06:35:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-02-08 06:35:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 288. [2025-02-08 06:35:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 274 states have internal predecessors, (312), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 06:35:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 339 transitions. [2025-02-08 06:35:52,252 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 339 transitions. Word has length 38 [2025-02-08 06:35:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:52,252 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 339 transitions. [2025-02-08 06:35:52,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 339 transitions. [2025-02-08 06:35:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-08 06:35:52,253 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:52,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:52,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 06:35:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:52,454 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:52,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash 417115407, now seen corresponding path program 1 times [2025-02-08 06:35:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87156520] [2025-02-08 06:35:52,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:52,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:52,457 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:52,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 06:35:52,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 06:35:52,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 06:35:52,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:52,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:52,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-08 06:35:52,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:52,628 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:52,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:52,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:52,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:53,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:35:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:53,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2025-02-08 06:35:53,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2025-02-08 06:35:53,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-08 06:35:53,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-08 06:35:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:53,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:53,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87156520] [2025-02-08 06:35:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87156520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:53,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:53,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-02-08 06:35:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096820092] [2025-02-08 06:35:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:53,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:35:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:53,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:35:53,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=264, Unknown=4, NotChecked=0, Total=306 [2025-02-08 06:35:53,709 INFO L87 Difference]: Start difference. First operand 288 states and 339 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:35:57,075 INFO L93 Difference]: Finished difference Result 360 states and 388 transitions. [2025-02-08 06:35:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:35:57,076 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2025-02-08 06:35:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:35:57,077 INFO L225 Difference]: With dead ends: 360 [2025-02-08 06:35:57,077 INFO L226 Difference]: Without dead ends: 360 [2025-02-08 06:35:57,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=649, Unknown=7, NotChecked=0, Total=756 [2025-02-08 06:35:57,077 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 450 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:35:57,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 913 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 06:35:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2025-02-08 06:35:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 288. [2025-02-08 06:35:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.4200913242009132) internal successors, (311), 274 states have internal predecessors, (311), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 06:35:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 338 transitions. [2025-02-08 06:35:57,088 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 338 transitions. Word has length 43 [2025-02-08 06:35:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:35:57,089 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 338 transitions. [2025-02-08 06:35:57,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:35:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 338 transitions. [2025-02-08 06:35:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:35:57,089 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:35:57,089 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:35:57,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 06:35:57,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:57,290 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:35:57,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:35:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1510705245, now seen corresponding path program 1 times [2025-02-08 06:35:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:35:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294471507] [2025-02-08 06:35:57,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:35:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:35:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:35:57,292 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:35:57,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 06:35:57,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 06:35:57,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:35:57,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:35:57,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:35:57,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-08 06:35:57,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:35:57,452 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:35:57,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:35:57,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:35:58,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:35:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:35:58,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2025-02-08 06:35:58,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2025-02-08 06:35:58,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-08 06:35:58,271 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:35:58,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 42 [2025-02-08 06:35:58,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2025-02-08 06:35:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:35:58,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:35:58,794 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:35:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294471507] [2025-02-08 06:35:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294471507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:35:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:35:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-02-08 06:35:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676355853] [2025-02-08 06:35:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:35:58,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:35:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:35:58,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:35:58,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=262, Unknown=7, NotChecked=0, Total=306 [2025-02-08 06:35:58,796 INFO L87 Difference]: Start difference. First operand 288 states and 338 transitions. Second operand has 18 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:36:04,526 INFO L93 Difference]: Finished difference Result 359 states and 387 transitions. [2025-02-08 06:36:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:36:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2025-02-08 06:36:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:36:04,527 INFO L225 Difference]: With dead ends: 359 [2025-02-08 06:36:04,527 INFO L226 Difference]: Without dead ends: 359 [2025-02-08 06:36:04,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=100, Invalid=640, Unknown=16, NotChecked=0, Total=756 [2025-02-08 06:36:04,528 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 444 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 31 mSolverCounterUnsat, 137 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 137 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:36:04,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 755 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2380 Invalid, 137 Unknown, 0 Unchecked, 5.2s Time] [2025-02-08 06:36:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-02-08 06:36:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 288. [2025-02-08 06:36:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.4155251141552512) internal successors, (310), 274 states have internal predecessors, (310), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 06:36:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 337 transitions. [2025-02-08 06:36:04,540 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 337 transitions. Word has length 42 [2025-02-08 06:36:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:36:04,540 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 337 transitions. [2025-02-08 06:36:04,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 337 transitions. [2025-02-08 06:36:04,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:36:04,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:36:04,540 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:36:04,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 06:36:04,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:04,745 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:36:04,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:36:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1510705244, now seen corresponding path program 1 times [2025-02-08 06:36:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:36:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611424182] [2025-02-08 06:36:04,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:36:04,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:36:04,748 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:36:04,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 06:36:04,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 06:36:04,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:36:04,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:36:04,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:36:04,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-08 06:36:04,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:36:04,931 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 [2025-02-08 06:36:04,948 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:36:04,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:36:05,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:05,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:06,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:36:06,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2025-02-08 06:36:06,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:36:06,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2025-02-08 06:36:06,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:06,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2025-02-08 06:36:06,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-02-08 06:36:06,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:06,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2025-02-08 06:36:06,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-02-08 06:36:06,900 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:36:06,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 52 [2025-02-08 06:36:06,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2025-02-08 06:36:07,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2025-02-08 06:36:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:36:07,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:36:07,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:36:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611424182] [2025-02-08 06:36:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611424182] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:36:07,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:36:07,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-02-08 06:36:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960079031] [2025-02-08 06:36:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:36:07,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:36:07,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:36:07,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:36:07,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=259, Unknown=6, NotChecked=0, Total=306 [2025-02-08 06:36:07,900 INFO L87 Difference]: Start difference. First operand 288 states and 337 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:36:14,980 INFO L93 Difference]: Finished difference Result 356 states and 384 transitions. [2025-02-08 06:36:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:36:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2025-02-08 06:36:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:36:14,981 INFO L225 Difference]: With dead ends: 356 [2025-02-08 06:36:14,981 INFO L226 Difference]: Without dead ends: 356 [2025-02-08 06:36:14,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=103, Invalid=639, Unknown=14, NotChecked=0, Total=756 [2025-02-08 06:36:14,982 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 432 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 34 mSolverCounterUnsat, 76 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 76 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:36:14,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 705 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2102 Invalid, 76 Unknown, 0 Unchecked, 6.4s Time] [2025-02-08 06:36:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-08 06:36:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 288. [2025-02-08 06:36:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.4018264840182648) internal successors, (307), 274 states have internal predecessors, (307), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 06:36:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 334 transitions. [2025-02-08 06:36:14,986 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 334 transitions. Word has length 42 [2025-02-08 06:36:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:36:14,986 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 334 transitions. [2025-02-08 06:36:14,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 334 transitions. [2025-02-08 06:36:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 06:36:14,987 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:36:14,987 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:36:15,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 06:36:15,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:15,191 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:36:15,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:36:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 535437325, now seen corresponding path program 1 times [2025-02-08 06:36:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:36:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336391088] [2025-02-08 06:36:15,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:36:15,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:36:15,194 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:36:15,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 06:36:15,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 06:36:15,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 06:36:15,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:36:15,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:36:15,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-08 06:36:15,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:36:15,347 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:36:15,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:36:15,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2025-02-08 06:36:15,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:15,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:18,499 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-08 06:36:18,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:36:18,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:36:18,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:18,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2025-02-08 06:36:18,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2025-02-08 06:36:18,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2025-02-08 06:36:18,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2025-02-08 06:36:18,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-08 06:36:18,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:18,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2025-02-08 06:36:18,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2025-02-08 06:36:18,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-02-08 06:36:18,953 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-08 06:36:18,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 64 [2025-02-08 06:36:18,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2025-02-08 06:36:20,036 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2025-02-08 06:36:20,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 60 treesize of output 26 [2025-02-08 06:36:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:36:20,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:36:20,132 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:36:20,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336391088] [2025-02-08 06:36:20,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336391088] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:36:20,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:36:20,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-02-08 06:36:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946282653] [2025-02-08 06:36:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:36:20,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:36:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:36:20,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:36:20,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=336, Unknown=1, NotChecked=0, Total=380 [2025-02-08 06:36:20,133 INFO L87 Difference]: Start difference. First operand 288 states and 334 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:36:35,931 INFO L93 Difference]: Finished difference Result 355 states and 382 transitions. [2025-02-08 06:36:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:36:35,931 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2025-02-08 06:36:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:36:35,933 INFO L225 Difference]: With dead ends: 355 [2025-02-08 06:36:35,933 INFO L226 Difference]: Without dead ends: 355 [2025-02-08 06:36:35,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=101, Invalid=768, Unknown=1, NotChecked=0, Total=870 [2025-02-08 06:36:35,934 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 319 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:36:35,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1600 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1810 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2025-02-08 06:36:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-08 06:36:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 288. [2025-02-08 06:36:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.3972602739726028) internal successors, (306), 274 states have internal predecessors, (306), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 06:36:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 333 transitions. [2025-02-08 06:36:35,944 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 333 transitions. Word has length 47 [2025-02-08 06:36:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:36:35,944 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 333 transitions. [2025-02-08 06:36:35,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:36:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 333 transitions. [2025-02-08 06:36:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 06:36:35,944 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:36:35,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:36:35,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-08 06:36:36,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:36,145 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-02-08 06:36:36,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:36:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash -884743541, now seen corresponding path program 1 times [2025-02-08 06:36:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 06:36:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522415325] [2025-02-08 06:36:36,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:36:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:36:36,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:36:36,148 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:36:36,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 06:36:36,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 06:36:36,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 06:36:36,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:36:36,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:36:36,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-08 06:36:36,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:36:36,310 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 [2025-02-08 06:36:36,320 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 06:36:36,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-02-08 06:36:36,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:36,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-08 06:36:37,126 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2025-02-08 06:36:38,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:36:38,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:38,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 15 [2025-02-08 06:36:38,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2025-02-08 06:36:38,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-02-08 06:36:38,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2025-02-08 06:36:38,797 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-08 06:36:38,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:36:38,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:36:38,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2025-02-08 06:36:38,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-02-08 06:36:38,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2025-02-08 06:36:43,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2025-02-08 06:36:43,133 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 06:36:43,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 42 [2025-02-08 06:36:43,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2025-02-08 06:36:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:36:44,099 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:36:44,099 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 06:36:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522415325] [2025-02-08 06:36:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522415325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:36:44,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:36:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-02-08 06:36:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561066431] [2025-02-08 06:36:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:36:44,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:36:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 06:36:44,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:36:44,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=334, Unknown=1, NotChecked=0, Total=380 [2025-02-08 06:36:44,102 INFO L87 Difference]: Start difference. First operand 288 states and 333 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)