./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:29:24,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:29:24,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:29:24,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:29:24,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:29:24,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:29:24,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:29:24,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:29:24,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:29:24,946 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:29:24,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:29:24,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:29:24,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:29:24,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:29:24,948 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:29:24,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:29:24,948 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:29:24,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:29:24,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:29:24,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:29:24,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:29:24,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:29:24,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:29:24,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:29:24,950 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 -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2025-02-06 12:29:25,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:29:25,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:29:25,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:29:25,199 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:29:25,199 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:29:25,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2025-02-06 12:29:26,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5dc581b6f/750f2c3181184ead8b39e1a05640faf1/FLAG754d8db26 [2025-02-06 12:29:26,686 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:29:26,688 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2025-02-06 12:29:26,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5dc581b6f/750f2c3181184ead8b39e1a05640faf1/FLAG754d8db26 [2025-02-06 12:29:26,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5dc581b6f/750f2c3181184ead8b39e1a05640faf1 [2025-02-06 12:29:26,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:29:26,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:29:26,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:26,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:29:26,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:29:26,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:26" (1/1) ... [2025-02-06 12:29:26,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4398bd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:26, skipping insertion in model container [2025-02-06 12:29:26,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:26" (1/1) ... [2025-02-06 12:29:26,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:29:27,187 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,210 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,213 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,216 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,220 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,246 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,246 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,248 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,248 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,250 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,251 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,252 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,252 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,256 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:27,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:29:27,277 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) [2025-02-06 12:29:27,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6beb5718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:27, skipping insertion in model container [2025-02-06 12:29:27,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:27,278 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:29:27,280 INFO L158 Benchmark]: Toolchain (without parser) took 352.19ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 84.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:29:27,280 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:29:27,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.47ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 84.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:29:27,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.47ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 84.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 747]: 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/uthash-2.0.2/uthash_SFH_test3-1.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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:29:28,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:29:28,992 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:29:28,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:29:29,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:29:29,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:29:29,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:29:29,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:29:29,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:29:29,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:29:29,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:29:29,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:29:29,017 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:29:29,018 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:29:29,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:29:29,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:29:29,019 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 -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2025-02-06 12:29:29,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:29:29,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:29:29,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:29:29,269 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:29:29,269 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:29:29,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2025-02-06 12:29:30,427 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ebf569af/aa79df2643ca48869ddaf691c2b77fd3/FLAG093cfc579 [2025-02-06 12:29:30,702 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:29:30,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2025-02-06 12:29:30,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ebf569af/aa79df2643ca48869ddaf691c2b77fd3/FLAG093cfc579 [2025-02-06 12:29:31,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ebf569af/aa79df2643ca48869ddaf691c2b77fd3 [2025-02-06 12:29:31,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:29:31,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:29:31,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:31,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:29:31,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:29:31,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a1f0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31, skipping insertion in model container [2025-02-06 12:29:31,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:29:31,321 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,353 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,356 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,362 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,368 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,394 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,394 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,396 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,396 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,399 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,400 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,401 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,402 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,405 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:29:31,423 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:29:31,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:29:31,469 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,488 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,492 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,495 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,503 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,527 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,530 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,531 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,531 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,536 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,537 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,537 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,539 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:29:31,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:29:31,548 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:29:31,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:29:31,664 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:29:31,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31 WrapperNode [2025-02-06 12:29:31,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:29:31,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:29:31,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:29:31,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:29:31,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,743 INFO L138 Inliner]: procedures = 180, calls = 279, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1024 [2025-02-06 12:29:31,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:29:31,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:29:31,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:29:31,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:29:31,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,850 INFO L175 MemorySlicer]: Split 255 memory accesses to 3 slices as follows [2, 34, 219]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-06 12:29:31,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,887 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:29:31,917 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:29:31,917 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:29:31,917 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:29:31,918 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (1/1) ... [2025-02-06 12:29:31,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:29:31,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:31,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:29:31,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-02-06 12:29:31,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:29:31,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:29:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:29:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:29:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:29:31,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:29:31,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:29:31,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:29:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:29:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:29:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:29:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:29:31,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:29:32,156 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:29:32,158 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:29:34,909 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 12:29:34,991 INFO L? ?]: Removed 1092 outVars from TransFormulas that were not future-live. [2025-02-06 12:29:34,992 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:29:35,021 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:29:35,026 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:29:35,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:29:35 BoogieIcfgContainer [2025-02-06 12:29:35,026 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:29:35,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:29:35,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:29:35,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:29:35,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:29:31" (1/3) ... [2025-02-06 12:29:35,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26759a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:29:35, skipping insertion in model container [2025-02-06 12:29:35,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:29:31" (2/3) ... [2025-02-06 12:29:35,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26759a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:29:35, skipping insertion in model container [2025-02-06 12:29:35,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:29:35" (3/3) ... [2025-02-06 12:29:35,047 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2025-02-06 12:29:35,057 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:29:35,058 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test3-1.i that has 6 procedures, 1095 locations, 1 initial locations, 38 loop locations, and 527 error locations. [2025-02-06 12:29:35,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:29:35,115 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;@79244d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:29:35,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 527 error locations. [2025-02-06 12:29:35,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 1085 states, 547 states have (on average 2.1846435100548445) internal successors, (1195), 1078 states have internal predecessors, (1195), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-06 12:29:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:29:35,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:35,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:29:35,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:35,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1246182, now seen corresponding path program 1 times [2025-02-06 12:29:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582754556] [2025-02-06 12:29:35,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:35,147 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) [2025-02-06 12:29:35,150 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 [2025-02-06 12:29:35,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:29:35,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:29:35,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:35,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:35,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:29:35,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:35,314 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 [2025-02-06 12:29:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:35,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:35,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582754556] [2025-02-06 12:29:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582754556] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:29:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807164908] [2025-02-06 12:29:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:35,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:29:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:35,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:29:35,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:35,358 INFO L87 Difference]: Start difference. First operand has 1085 states, 547 states have (on average 2.1846435100548445) internal successors, (1195), 1078 states have internal predecessors, (1195), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:36,727 INFO L93 Difference]: Finished difference Result 1080 states and 1146 transitions. [2025-02-06 12:29:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:29:36,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-02-06 12:29:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:36,739 INFO L225 Difference]: With dead ends: 1080 [2025-02-06 12:29:36,740 INFO L226 Difference]: Without dead ends: 1078 [2025-02-06 12:29:36,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:36,743 INFO L435 NwaCegarLoop]: 663 mSDtfsCounter, 990 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:36,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 726 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:29:36,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2025-02-06 12:29:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1070. [2025-02-06 12:29:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 549 states have (on average 2.036429872495446) internal successors, (1118), 1063 states have internal predecessors, (1118), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1136 transitions. [2025-02-06 12:29:36,830 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1136 transitions. Word has length 3 [2025-02-06 12:29:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:36,830 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1136 transitions. [2025-02-06 12:29:36,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1136 transitions. [2025-02-06 12:29:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:29:36,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:36,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:29:36,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 12:29:37,035 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 [2025-02-06 12:29:37,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:37,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1246183, now seen corresponding path program 1 times [2025-02-06 12:29:37,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:37,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831616963] [2025-02-06 12:29:37,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:37,039 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) [2025-02-06 12:29:37,040 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 [2025-02-06 12:29:37,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:29:37,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:29:37,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:37,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:37,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:29:37,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:37,133 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 [2025-02-06 12:29:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:37,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:37,145 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831616963] [2025-02-06 12:29:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831616963] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:29:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348668522] [2025-02-06 12:29:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:37,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:29:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:37,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:29:37,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:37,147 INFO L87 Difference]: Start difference. First operand 1070 states and 1136 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:38,894 INFO L93 Difference]: Finished difference Result 1495 states and 1603 transitions. [2025-02-06 12:29:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:29:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-02-06 12:29:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:38,898 INFO L225 Difference]: With dead ends: 1495 [2025-02-06 12:29:38,899 INFO L226 Difference]: Without dead ends: 1495 [2025-02-06 12:29:38,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:38,899 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 455 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:38,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1541 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:29:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2025-02-06 12:29:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1286. [2025-02-06 12:29:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 766 states have (on average 2.02088772845953) internal successors, (1548), 1279 states have internal predecessors, (1548), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1566 transitions. [2025-02-06 12:29:38,924 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1566 transitions. Word has length 3 [2025-02-06 12:29:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:38,924 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1566 transitions. [2025-02-06 12:29:38,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1566 transitions. [2025-02-06 12:29:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:29:38,924 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:38,924 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:38,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:29:39,126 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 [2025-02-06 12:29:39,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:39,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash -26101221, now seen corresponding path program 1 times [2025-02-06 12:29:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:39,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665373861] [2025-02-06 12:29:39,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:39,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:39,129 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) [2025-02-06 12:29:39,130 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 [2025-02-06 12:29:39,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:29:39,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:29:39,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:39,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:39,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:29:39,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:39,226 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 [2025-02-06 12:29:39,269 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-06 12:29:39,269 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 12 treesize of output 18 [2025-02-06 12:29:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:39,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:39,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:39,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665373861] [2025-02-06 12:29:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665373861] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:39,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:39,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:29:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091149907] [2025-02-06 12:29:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:39,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:29:39,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:39,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:29:39,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:39,336 INFO L87 Difference]: Start difference. First operand 1286 states and 1566 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:42,799 INFO L93 Difference]: Finished difference Result 2209 states and 2375 transitions. [2025-02-06 12:29:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:29:42,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2025-02-06 12:29:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:42,806 INFO L225 Difference]: With dead ends: 2209 [2025-02-06 12:29:42,807 INFO L226 Difference]: Without dead ends: 2209 [2025-02-06 12:29:42,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:42,809 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1207 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:42,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2272 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-06 12:29:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2025-02-06 12:29:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1437. [2025-02-06 12:29:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 917 states have (on average 2.0032715376226826) internal successors, (1837), 1430 states have internal predecessors, (1837), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1855 transitions. [2025-02-06 12:29:42,851 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1855 transitions. Word has length 8 [2025-02-06 12:29:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:42,852 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 1855 transitions. [2025-02-06 12:29:42,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1855 transitions. [2025-02-06 12:29:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:29:42,852 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:42,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:42,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:29:43,053 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 [2025-02-06 12:29:43,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:43,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:43,054 INFO L85 PathProgramCache]: Analyzing trace with hash -809136708, now seen corresponding path program 1 times [2025-02-06 12:29:43,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:43,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953059624] [2025-02-06 12:29:43,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:43,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:43,056 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) [2025-02-06 12:29:43,057 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 [2025-02-06 12:29:43,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:29:43,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:29:43,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:43,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:43,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:29:43,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:43,157 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 [2025-02-06 12:29:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:43,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:43,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953059624] [2025-02-06 12:29:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953059624] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:43,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:29:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304211699] [2025-02-06 12:29:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:43,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:29:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:43,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:29:43,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:43,171 INFO L87 Difference]: Start difference. First operand 1437 states and 1855 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:44,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:44,511 INFO L93 Difference]: Finished difference Result 1986 states and 2630 transitions. [2025-02-06 12:29:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:29:44,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-02-06 12:29:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:44,516 INFO L225 Difference]: With dead ends: 1986 [2025-02-06 12:29:44,516 INFO L226 Difference]: Without dead ends: 1986 [2025-02-06 12:29:44,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:44,518 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 960 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:44,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1258 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:29:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2025-02-06 12:29:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1388. [2025-02-06 12:29:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 917 states have (on average 1.9378407851690294) internal successors, (1777), 1381 states have internal predecessors, (1777), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1795 transitions. [2025-02-06 12:29:44,539 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1795 transitions. Word has length 9 [2025-02-06 12:29:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:44,540 INFO L471 AbstractCegarLoop]: Abstraction has 1388 states and 1795 transitions. [2025-02-06 12:29:44,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1795 transitions. [2025-02-06 12:29:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:29:44,541 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:44,541 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:44,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:29:44,745 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 [2025-02-06 12:29:44,745 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:44,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash -809136707, now seen corresponding path program 1 times [2025-02-06 12:29:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:44,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323074488] [2025-02-06 12:29:44,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:44,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:44,748 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) [2025-02-06 12:29:44,750 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 [2025-02-06 12:29:44,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:29:44,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:29:44,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:44,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:44,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:29:44,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:44,847 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 [2025-02-06 12:29:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:44,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:44,864 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323074488] [2025-02-06 12:29:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323074488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:29:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727118610] [2025-02-06 12:29:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:44,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:29:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:44,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:29:44,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:44,866 INFO L87 Difference]: Start difference. First operand 1388 states and 1795 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:46,386 INFO L93 Difference]: Finished difference Result 2094 states and 2737 transitions. [2025-02-06 12:29:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:29:46,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-02-06 12:29:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:46,391 INFO L225 Difference]: With dead ends: 2094 [2025-02-06 12:29:46,391 INFO L226 Difference]: Without dead ends: 2094 [2025-02-06 12:29:46,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:29:46,393 INFO L435 NwaCegarLoop]: 1191 mSDtfsCounter, 713 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:46,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1645 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:29:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2025-02-06 12:29:46,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1417. [2025-02-06 12:29:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 956 states have (on average 1.9163179916317992) internal successors, (1832), 1410 states have internal predecessors, (1832), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1850 transitions. [2025-02-06 12:29:46,417 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1850 transitions. Word has length 9 [2025-02-06 12:29:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:46,417 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 1850 transitions. [2025-02-06 12:29:46,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1850 transitions. [2025-02-06 12:29:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 12:29:46,418 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:46,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:46,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:29:46,619 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 [2025-02-06 12:29:46,619 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:46,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash -731579320, now seen corresponding path program 1 times [2025-02-06 12:29:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236839462] [2025-02-06 12:29:46,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:46,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:46,621 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) [2025-02-06 12:29:46,622 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 [2025-02-06 12:29:46,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:29:46,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:29:46,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:46,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:46,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:29:46,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:46,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:46,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236839462] [2025-02-06 12:29:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236839462] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:46,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:29:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001233056] [2025-02-06 12:29:46,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:46,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:29:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:46,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:29:46,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:46,770 INFO L87 Difference]: Start difference. First operand 1417 states and 1850 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:47,230 INFO L93 Difference]: Finished difference Result 1861 states and 2399 transitions. [2025-02-06 12:29:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:29:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2025-02-06 12:29:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:47,236 INFO L225 Difference]: With dead ends: 1861 [2025-02-06 12:29:47,236 INFO L226 Difference]: Without dead ends: 1861 [2025-02-06 12:29:47,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:47,237 INFO L435 NwaCegarLoop]: 1138 mSDtfsCounter, 454 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:47,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 3156 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 12:29:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2025-02-06 12:29:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1668. [2025-02-06 12:29:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1207 states have (on average 1.9386909693454846) internal successors, (2340), 1661 states have internal predecessors, (2340), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2358 transitions. [2025-02-06 12:29:47,262 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2358 transitions. Word has length 13 [2025-02-06 12:29:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:47,262 INFO L471 AbstractCegarLoop]: Abstraction has 1668 states and 2358 transitions. [2025-02-06 12:29:47,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2358 transitions. [2025-02-06 12:29:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 12:29:47,262 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:47,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:47,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:29:47,463 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 [2025-02-06 12:29:47,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:47,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -731580665, now seen corresponding path program 1 times [2025-02-06 12:29:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874271966] [2025-02-06 12:29:47,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:47,466 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) [2025-02-06 12:29:47,466 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 [2025-02-06 12:29:47,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:29:47,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:29:47,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:47,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:47,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:29:47,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:47,571 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:29:47,572 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:29:47,572 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:29:47,575 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 30 treesize of output 39 [2025-02-06 12:29:47,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:29:47,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-06 12:29:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:47,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:47,627 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874271966] [2025-02-06 12:29:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874271966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:47,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:29:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631117908] [2025-02-06 12:29:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:47,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:29:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:47,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:29:47,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:47,629 INFO L87 Difference]: Start difference. First operand 1668 states and 2358 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:48,016 INFO L93 Difference]: Finished difference Result 2227 states and 2662 transitions. [2025-02-06 12:29:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:29:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2025-02-06 12:29:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:48,022 INFO L225 Difference]: With dead ends: 2227 [2025-02-06 12:29:48,022 INFO L226 Difference]: Without dead ends: 2227 [2025-02-06 12:29:48,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:29:48,023 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 973 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:48,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 3052 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 12:29:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2025-02-06 12:29:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 1296. [2025-02-06 12:29:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 835 states have (on average 1.9137724550898203) internal successors, (1598), 1289 states have internal predecessors, (1598), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1616 transitions. [2025-02-06 12:29:48,043 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1616 transitions. Word has length 13 [2025-02-06 12:29:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:48,043 INFO L471 AbstractCegarLoop]: Abstraction has 1296 states and 1616 transitions. [2025-02-06 12:29:48,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1616 transitions. [2025-02-06 12:29:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:29:48,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:48,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:48,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:29:48,247 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 [2025-02-06 12:29:48,247 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:48,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -165591889, now seen corresponding path program 1 times [2025-02-06 12:29:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639683285] [2025-02-06 12:29:48,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:48,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:48,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:48,249 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) [2025-02-06 12:29:48,250 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 [2025-02-06 12:29:48,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:29:48,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:29:48,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:48,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:48,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:29:48,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:48,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:48,395 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639683285] [2025-02-06 12:29:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639683285] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:48,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:48,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:29:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954238246] [2025-02-06 12:29:48,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:48,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:29:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:48,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:29:48,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:48,396 INFO L87 Difference]: Start difference. First operand 1296 states and 1616 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:50,029 INFO L93 Difference]: Finished difference Result 1748 states and 2170 transitions. [2025-02-06 12:29:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:29:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-06 12:29:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:50,033 INFO L225 Difference]: With dead ends: 1748 [2025-02-06 12:29:50,034 INFO L226 Difference]: Without dead ends: 1748 [2025-02-06 12:29:50,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:29:50,034 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 1008 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:50,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1301 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:29:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2025-02-06 12:29:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1273. [2025-02-06 12:29:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 835 states have (on average 1.858682634730539) internal successors, (1552), 1266 states have internal predecessors, (1552), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1570 transitions. [2025-02-06 12:29:50,052 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1570 transitions. Word has length 19 [2025-02-06 12:29:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:50,052 INFO L471 AbstractCegarLoop]: Abstraction has 1273 states and 1570 transitions. [2025-02-06 12:29:50,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1570 transitions. [2025-02-06 12:29:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:29:50,054 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:50,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:29:50,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:29:50,254 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 [2025-02-06 12:29:50,255 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:50,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -165591888, now seen corresponding path program 1 times [2025-02-06 12:29:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150542875] [2025-02-06 12:29:50,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:50,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:50,259 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) [2025-02-06 12:29:50,260 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 [2025-02-06 12:29:50,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:29:50,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:29:50,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:50,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:50,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:29:50,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:50,389 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 [2025-02-06 12:29:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:50,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:29:50,451 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150542875] [2025-02-06 12:29:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150542875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:29:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:29:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:29:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425430972] [2025-02-06 12:29:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:29:50,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:29:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:50,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:29:50,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:29:50,452 INFO L87 Difference]: Start difference. First operand 1273 states and 1570 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:29:52,854 INFO L93 Difference]: Finished difference Result 2022 states and 2498 transitions. [2025-02-06 12:29:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:29:52,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-02-06 12:29:52,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:29:52,859 INFO L225 Difference]: With dead ends: 2022 [2025-02-06 12:29:52,859 INFO L226 Difference]: Without dead ends: 2022 [2025-02-06 12:29:52,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:29:52,860 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 832 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:29:52,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2550 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 12:29:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2025-02-06 12:29:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1387. [2025-02-06 12:29:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 949 states have (on average 1.7808219178082192) internal successors, (1690), 1380 states have internal predecessors, (1690), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:29:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1708 transitions. [2025-02-06 12:29:52,878 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1708 transitions. Word has length 19 [2025-02-06 12:29:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:29:52,878 INFO L471 AbstractCegarLoop]: Abstraction has 1387 states and 1708 transitions. [2025-02-06 12:29:52,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:29:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1708 transitions. [2025-02-06 12:29:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 12:29:52,880 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:29:52,880 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-02-06 12:29:52,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:29:53,081 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 [2025-02-06 12:29:53,081 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:29:53,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:29:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1982642759, now seen corresponding path program 1 times [2025-02-06 12:29:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:29:53,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213328382] [2025-02-06 12:29:53,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:29:53,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:29:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:29:53,084 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) [2025-02-06 12:29:53,085 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 [2025-02-06 12:29:53,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 12:29:53,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 12:29:53,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:29:53,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:29:53,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:29:53,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:29:53,241 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 [2025-02-06 12:29:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:53,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:29:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:29:53,774 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:29:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213328382] [2025-02-06 12:29:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213328382] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:29:53,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:29:53,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:29:53,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635133255] [2025-02-06 12:29:53,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:29:53,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:29:53,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:29:53,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:29:53,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:29:53,775 INFO L87 Difference]: Start difference. First operand 1387 states and 1708 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:00,070 INFO L93 Difference]: Finished difference Result 2378 states and 2988 transitions. [2025-02-06 12:30:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:30:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 38 [2025-02-06 12:30:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:00,076 INFO L225 Difference]: With dead ends: 2378 [2025-02-06 12:30:00,076 INFO L226 Difference]: Without dead ends: 2378 [2025-02-06 12:30:00,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:30:00,077 INFO L435 NwaCegarLoop]: 1285 mSDtfsCounter, 2456 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 4295 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:00,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2457 Valid, 4295 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2025-02-06 12:30:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2025-02-06 12:30:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1551. [2025-02-06 12:30:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1113 states have (on average 1.7268643306379154) internal successors, (1922), 1544 states have internal predecessors, (1922), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:30:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1940 transitions. [2025-02-06 12:30:00,109 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1940 transitions. Word has length 38 [2025-02-06 12:30:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:00,110 INFO L471 AbstractCegarLoop]: Abstraction has 1551 states and 1940 transitions. [2025-02-06 12:30:00,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1940 transitions. [2025-02-06 12:30:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 12:30:00,113 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:00,113 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, 1, 1, 1] [2025-02-06 12:30:00,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:00,314 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 [2025-02-06 12:30:00,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:00,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 596505844, now seen corresponding path program 1 times [2025-02-06 12:30:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17603298] [2025-02-06 12:30:00,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:00,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:00,321 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) [2025-02-06 12:30:00,322 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 [2025-02-06 12:30:00,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 12:30:00,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 12:30:00,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:00,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:00,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:00,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:00,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:00,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17603298] [2025-02-06 12:30:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17603298] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:00,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:00,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:00,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522321380] [2025-02-06 12:30:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:00,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:00,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:00,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:00,514 INFO L87 Difference]: Start difference. First operand 1551 states and 1940 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:00,563 INFO L93 Difference]: Finished difference Result 1240 states and 1504 transitions. [2025-02-06 12:30:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:30:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-06 12:30:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:00,565 INFO L225 Difference]: With dead ends: 1240 [2025-02-06 12:30:00,565 INFO L226 Difference]: Without dead ends: 1240 [2025-02-06 12:30:00,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:00,566 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 56 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:00,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2876 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:30:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2025-02-06 12:30:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2025-02-06 12:30:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 823 states have (on average 1.8031591737545565) internal successors, (1484), 1231 states have internal predecessors, (1484), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:30:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1502 transitions. [2025-02-06 12:30:00,577 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1502 transitions. Word has length 54 [2025-02-06 12:30:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:00,577 INFO L471 AbstractCegarLoop]: Abstraction has 1238 states and 1502 transitions. [2025-02-06 12:30:00,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1502 transitions. [2025-02-06 12:30:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 12:30:00,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:00,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:00,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 12:30:00,780 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 [2025-02-06 12:30:00,780 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:00,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1736909764, now seen corresponding path program 1 times [2025-02-06 12:30:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509471186] [2025-02-06 12:30:00,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:00,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:00,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:00,783 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) [2025-02-06 12:30:00,783 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 [2025-02-06 12:30:00,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 12:30:00,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 12:30:00,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:00,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:00,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:30:00,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:00,973 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 [2025-02-06 12:30:00,979 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 [2025-02-06 12:30:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:30:01,321 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 [2025-02-06 12:30:01,333 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:30:01,334 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 [2025-02-06 12:30:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:01,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:01,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509471186] [2025-02-06 12:30:01,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509471186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:01,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:01,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:30:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610940890] [2025-02-06 12:30:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:01,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:01,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:01,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:01,347 INFO L87 Difference]: Start difference. First operand 1238 states and 1502 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:03,056 INFO L93 Difference]: Finished difference Result 1667 states and 2056 transitions. [2025-02-06 12:30:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:03,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2025-02-06 12:30:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:03,060 INFO L225 Difference]: With dead ends: 1667 [2025-02-06 12:30:03,060 INFO L226 Difference]: Without dead ends: 1667 [2025-02-06 12:30:03,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:03,061 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 1257 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:03,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 596 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:30:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-02-06 12:30:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1161. [2025-02-06 12:30:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 784 states have (on average 1.7474489795918366) internal successors, (1370), 1154 states have internal predecessors, (1370), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:30:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1388 transitions. [2025-02-06 12:30:03,074 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1388 transitions. Word has length 62 [2025-02-06 12:30:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:03,075 INFO L471 AbstractCegarLoop]: Abstraction has 1161 states and 1388 transitions. [2025-02-06 12:30:03,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1388 transitions. [2025-02-06 12:30:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:30:03,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:03,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:03,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:30:03,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:03,276 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:03,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -141407974, now seen corresponding path program 1 times [2025-02-06 12:30:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062765035] [2025-02-06 12:30:03,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:03,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:03,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:03,279 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:03,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:30:03,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:30:03,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:30:03,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:03,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:03,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:30:03,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:03,480 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 [2025-02-06 12:30:03,493 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 19 treesize of output 1 [2025-02-06 12:30:03,520 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 23 treesize of output 11 [2025-02-06 12:30:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:03,530 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:03,530 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062765035] [2025-02-06 12:30:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062765035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:03,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761006271] [2025-02-06 12:30:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:03,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:30:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:03,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:30:03,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:03,531 INFO L87 Difference]: Start difference. First operand 1161 states and 1388 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:05,224 INFO L93 Difference]: Finished difference Result 1160 states and 1387 transitions. [2025-02-06 12:30:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:30:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-06 12:30:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:05,227 INFO L225 Difference]: With dead ends: 1160 [2025-02-06 12:30:05,227 INFO L226 Difference]: Without dead ends: 1160 [2025-02-06 12:30:05,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:30:05,227 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 2 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:05,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2528 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 12:30:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2025-02-06 12:30:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2025-02-06 12:30:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 784 states have (on average 1.746173469387755) internal successors, (1369), 1153 states have internal predecessors, (1369), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:30:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1387 transitions. [2025-02-06 12:30:05,236 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1387 transitions. Word has length 67 [2025-02-06 12:30:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:05,237 INFO L471 AbstractCegarLoop]: Abstraction has 1160 states and 1387 transitions. [2025-02-06 12:30:05,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1387 transitions. [2025-02-06 12:30:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:30:05,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:05,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:05,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:30:05,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:05,438 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:05,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash -141407973, now seen corresponding path program 1 times [2025-02-06 12:30:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:05,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096959873] [2025-02-06 12:30:05,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:05,442 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) [2025-02-06 12:30:05,443 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 [2025-02-06 12:30:05,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:30:05,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:30:05,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:05,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:05,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:30:05,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:05,637 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 [2025-02-06 12:30:05,651 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 19 treesize of output 1 [2025-02-06 12:30:05,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:30:05,678 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 21 treesize of output 9 [2025-02-06 12:30:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:05,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:05,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096959873] [2025-02-06 12:30:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096959873] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:05,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:05,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773241480] [2025-02-06 12:30:05,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:05,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:30:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:05,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:30:05,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:30:05,691 INFO L87 Difference]: Start difference. First operand 1160 states and 1387 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:07,651 INFO L93 Difference]: Finished difference Result 1159 states and 1386 transitions. [2025-02-06 12:30:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:30:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2025-02-06 12:30:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:07,655 INFO L225 Difference]: With dead ends: 1159 [2025-02-06 12:30:07,655 INFO L226 Difference]: Without dead ends: 1159 [2025-02-06 12:30:07,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:30:07,656 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:07,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2528 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:30:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2025-02-06 12:30:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159. [2025-02-06 12:30:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 783 states have (on average 1.7471264367816093) internal successors, (1368), 1152 states have internal predecessors, (1368), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 12:30:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1386 transitions. [2025-02-06 12:30:07,670 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1386 transitions. Word has length 67 [2025-02-06 12:30:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:07,670 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1386 transitions. [2025-02-06 12:30:07,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:30:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1386 transitions. [2025-02-06 12:30:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:30:07,670 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:07,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:07,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:30:07,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:07,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:07,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2032810775, now seen corresponding path program 1 times [2025-02-06 12:30:07,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:07,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959459164] [2025-02-06 12:30:07,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:07,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:07,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:07,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:30:07,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:30:08,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:30:08,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:30:08,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:08,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:08,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:30:08,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:08,088 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 19 treesize of output 1 [2025-02-06 12:30:08,141 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 23 treesize of output 11 [2025-02-06 12:30:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:08,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:08,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959459164] [2025-02-06 12:30:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959459164] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:30:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129733997] [2025-02-06 12:30:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:08,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:30:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:08,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:30:08,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:30:08,152 INFO L87 Difference]: Start difference. First operand 1159 states and 1386 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:10,455 INFO L93 Difference]: Finished difference Result 1171 states and 1401 transitions. [2025-02-06 12:30:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:30:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:30:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:10,459 INFO L225 Difference]: With dead ends: 1171 [2025-02-06 12:30:10,459 INFO L226 Difference]: Without dead ends: 1171 [2025-02-06 12:30:10,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:30:10,460 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 13 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:10,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4011 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 12:30:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2025-02-06 12:30:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1165. [2025-02-06 12:30:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 788 states have (on average 1.7449238578680204) internal successors, (1375), 1157 states have internal predecessors, (1375), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2025-02-06 12:30:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1396 transitions. [2025-02-06 12:30:10,477 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1396 transitions. Word has length 75 [2025-02-06 12:30:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:10,477 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1396 transitions. [2025-02-06 12:30:10,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1396 transitions. [2025-02-06 12:30:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:30:10,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:10,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:10,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:30:10,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:10,678 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:10,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2032810776, now seen corresponding path program 1 times [2025-02-06 12:30:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282571168] [2025-02-06 12:30:10,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:10,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:10,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:10,681 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) [2025-02-06 12:30:10,682 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 [2025-02-06 12:30:10,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:30:10,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:30:10,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:10,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:10,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:30:10,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:10,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:30:10,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:10,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282571168] [2025-02-06 12:30:10,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282571168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:30:10,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:30:10,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:30:10,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545131415] [2025-02-06 12:30:10,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:30:10,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:30:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:10,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:30:10,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:10,940 INFO L87 Difference]: Start difference. First operand 1165 states and 1396 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:10,975 INFO L93 Difference]: Finished difference Result 1162 states and 1390 transitions. [2025-02-06 12:30:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:30:10,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:30:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:10,981 INFO L225 Difference]: With dead ends: 1162 [2025-02-06 12:30:10,981 INFO L226 Difference]: Without dead ends: 1162 [2025-02-06 12:30:10,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:30:10,982 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 0 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:10,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2860 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:30:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2025-02-06 12:30:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2025-02-06 12:30:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 785 states have (on average 1.7464968152866243) internal successors, (1371), 1155 states have internal predecessors, (1371), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 12:30:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1390 transitions. [2025-02-06 12:30:10,996 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1390 transitions. Word has length 75 [2025-02-06 12:30:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:10,996 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1390 transitions. [2025-02-06 12:30:10,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:30:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1390 transitions. [2025-02-06 12:30:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:30:10,999 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:10,999 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, 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] [2025-02-06 12:30:11,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 12:30:11,199 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 [2025-02-06 12:30:11,199 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:11,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 786525936, now seen corresponding path program 1 times [2025-02-06 12:30:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981753509] [2025-02-06 12:30:11,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:30:11,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:11,203 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) [2025-02-06 12:30:11,203 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 [2025-02-06 12:30:11,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:30:11,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:30:11,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:30:11,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:11,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:30:11,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:11,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:30:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:11,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981753509] [2025-02-06 12:30:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981753509] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:30:11,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:30:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:30:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598135094] [2025-02-06 12:30:11,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:30:11,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:30:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:11,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:30:11,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:30:11,448 INFO L87 Difference]: Start difference. First operand 1162 states and 1390 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:30:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:30:11,571 INFO L93 Difference]: Finished difference Result 1174 states and 1407 transitions. [2025-02-06 12:30:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:30:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-06 12:30:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:30:11,577 INFO L225 Difference]: With dead ends: 1174 [2025-02-06 12:30:11,579 INFO L226 Difference]: Without dead ends: 1174 [2025-02-06 12:30:11,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:30:11,580 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 6 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:30:11,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3812 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:30:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2025-02-06 12:30:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1172. [2025-02-06 12:30:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 794 states have (on average 1.7455919395465995) internal successors, (1386), 1164 states have internal predecessors, (1386), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 12:30:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1405 transitions. [2025-02-06 12:30:11,595 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1405 transitions. Word has length 76 [2025-02-06 12:30:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:30:11,595 INFO L471 AbstractCegarLoop]: Abstraction has 1172 states and 1405 transitions. [2025-02-06 12:30:11,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:30:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1405 transitions. [2025-02-06 12:30:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 12:30:11,596 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:30:11,596 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:30:11,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:30:11,796 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 [2025-02-06 12:30:11,797 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:30:11,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:30:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash -951785129, now seen corresponding path program 2 times [2025-02-06 12:30:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:30:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288456904] [2025-02-06 12:30:11,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:30:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:30:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:30:11,800 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) [2025-02-06 12:30:11,801 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 [2025-02-06 12:30:11,931 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-06 12:30:57,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 12:30:57,490 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:30:57,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:57,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 12:30:57,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:57,514 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 [2025-02-06 12:30:57,582 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:30:57,582 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 [2025-02-06 12:30:57,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-02-06 12:30:57,715 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:30:57,716 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 43 [2025-02-06 12:30:57,739 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 33 treesize of output 15 [2025-02-06 12:30:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:30:57,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:30:57,818 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:30:57,819 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 25 treesize of output 24 [2025-02-06 12:30:57,827 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1165 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1165) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-02-06 12:30:57,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:30:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288456904] [2025-02-06 12:30:57,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288456904] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:30:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380733433] [2025-02-06 12:30:57,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:30:57,829 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:30:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:30:57,852 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:30:57,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-02-06 12:30:58,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-06 12:30:58,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 12:30:58,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:30:58,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:30:58,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:30:58,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:30:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:58,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:30:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:30:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380733433] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:30:59,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:30:59,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-06 12:30:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704173483] [2025-02-06 12:30:59,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:30:59,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:30:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:30:59,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:30:59,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-02-06 12:30:59,151 INFO L87 Difference]: Start difference. First operand 1172 states and 1405 transitions. Second operand has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:31:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:31:04,771 INFO L93 Difference]: Finished difference Result 1655 states and 2020 transitions. [2025-02-06 12:31:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 12:31:04,772 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2025-02-06 12:31:04,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:31:04,775 INFO L225 Difference]: With dead ends: 1655 [2025-02-06 12:31:04,775 INFO L226 Difference]: Without dead ends: 1651 [2025-02-06 12:31:04,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=407, Invalid=2046, Unknown=1, NotChecked=96, Total=2550 [2025-02-06 12:31:04,776 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 861 mSDsluCounter, 5489 mSDsCounter, 0 mSdLazyCounter, 5304 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 6030 SdHoareTripleChecker+Invalid, 5333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:31:04,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 6030 Invalid, 5333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5304 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2025-02-06 12:31:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2025-02-06 12:31:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1180. [2025-02-06 12:31:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 803 states have (on average 1.7397260273972603) internal successors, (1397), 1172 states have internal predecessors, (1397), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 12:31:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1416 transitions. [2025-02-06 12:31:04,789 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1416 transitions. Word has length 79 [2025-02-06 12:31:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:31:04,790 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1416 transitions. [2025-02-06 12:31:04,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:31:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1416 transitions. [2025-02-06 12:31:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-06 12:31:04,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:31:04,790 INFO L218 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:31:04,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:31:04,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-02-06 12:31:05,191 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,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 12:31:05,191 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 524 more)] === [2025-02-06 12:31:05,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:31:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash -358100296, now seen corresponding path program 1 times [2025-02-06 12:31:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:31:05,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808960176] [2025-02-06 12:31:05,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:31:05,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:31:05,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:31:05,194 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) [2025-02-06 12:31:05,196 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 [2025-02-06 12:31:05,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-06 12:31:05,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-06 12:31:05,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:31:05,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:31:05,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:31:05,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:31:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:31:05,554 INFO L312 TraceCheckSpWp]: Computing backward predicates...